Cirrus_crystal_4281_design_ref.pdf

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CRD4281-5 Reference Design Data Sheet FEATURES n PCI Audio Accelerator add-in card designed to meet AC ‘97 specification n 2-layer low cost single sided adapter board n CS4281 PCI Audio Controller and CS4297A Audio Codec ‘97 CrystalClear™ AC '97 Low Cost PCI Audio Adapter Reference Design n Complete suite of Analog I/O connections: — Line In, Line Out, Mic In, Modem audio connection, CD In, Video In, and Aux In n Optional hardware volume control connector n Joystick/MIDI Interface n Meets or exceeds Microsoft’s® PC 97, PC 98 and PC 99, both required and advanced, audio performance requirements. n Pin compatible with CS4614 and CS4280-CM n Pin compatible with CS4297 and CS4299 DESCRIPTION The CRD4281-5 low cost PCI add-in board reference design showcases Cirrus Logic’s CS4281 Audio Controller and the CS4297A Audio Codec '97. The CRD4281-5 card is 3.8 inches high by 4.7 inches long. The CRD4281-5 reference design includes a customerready manufacturing kit. Included in the kit are a full set of schematic design files (OrCAD® 7.2 format), PCB job files (PADS® ASCII), PCB artwork files, and bill of materials. The design is production ready as is, or can be easily modified to incorporate specific OEM value-add. ORDERING INFO CRD4281-5 CIRRUS LOGIC REFERENCE DESIGN DATA SHEET DS308RD5A1 Copyright  Cirrus Logic, Inc. 1999 (All Rights Reserved) MAR ‘99 CRD4281-5 CrystalClear™ AC '97 Low Cost PCI Audio Adapter GENERAL INFORMATION The CRD4281-5 is a reference design of a production-grade AC ‘97 PCI Audio card using the CrystalClear CS4281 PCI Audio Controller and the CS4297A Audio Codec ‘97. These two integrated circuits demonstrate Cirrus’ controller and CrystalClear audio quality in a single PCI add-in card reference design. The CRD4281-5 audio measurements meet or exceed Microsoft’s PC 97, PC 98, and PC 99, both required and advanced, audio performance requirements. Today’s multimedia applications demand high quality PC audio and numerous audio connections. To meet this demand, Intel® defined the AC ‘97 (Audio Codec ‘97) specification that defines a twochip audio solution [1]. The advantage of a two chip audio solution lies in the complete separation of the analog section from the noisy digital environment of the personal computer. A 5-wire digital link is all that is required to connect the audio codec to the PCI bus-based AC ‘97 controller. This allows the audio section to reach the required dynamic range of ~90 dB FS A while making the layout and placement of the audio section easier to implement. In the Windows 95® environment, a MIDI stream and a number of simultaneous audio streams from Windows 95 applications can be sent to the CS4281 over the PCI bus. The CS4281 performs hardware-controlled audio stream mixing and processing, including sample rate conversion, then sends the output stream over the AC ‘97 Link to the CS4297A. The CS4297A provides multiple analog audio inputs and outputs, analog mixing, Analogto-Digital Conversion (ADC) and Digital-to-Analog Conversion (DAC). The CRD4281-5 is designed to provide the highest possible functionality, along with industry leading audio performance at a low manufacturing cost. Care was taken with component placement and signal routing to minimize sources which can degrade audio performance. The CRD4281-5 reference design illustrates a low cost two-layer add-in card layout. The card is sectioned into three main parts: the CS4281 PCI Audio Controller section, the CS4297A Audio Codec ‘97 section, and the Analog I/O section. CS4281 PCI AUDIO CONTROLLER The CS4281 is a PCI 2.1 compliant device which provides a complete high quality audio solution. It includes an integrated FM synthesizer and Plugand-Play interface. In addition, the CS4281 offers hardware volume control. The circuitry supporting the CS4281 includes the required bypass capacitors, an EEPROM, the Microsoft ,Windows, and Windows 95 are registered trademarks, and WHQL is trademark of Microsoft. CrystalClear is trademarks of Cirrus Logic, Inc. Intel is a registered trademark of Intel Corporation. OrCAD is a registered trademark of OrCAD, Inc. PADS is a registered trademark of, PADS Software, Inc. Preliminary product information describes products which are in production, but for which full characterization data is not yet available. Advance product information describes products which are in development and subject to development changes. Cirrus Logic, Inc. has made best efforts to ensure that the information contained in this document is accurate and reliable. However, the information is subject to change without notice and is provided “AS IS” without warranty of any kind (express or implied). No responsibility is assumed by Cirrus Logic, Inc. for the use of this information, nor for infringements of patents or other rights of third parties. This document is the property of Cirrus Logic, Inc. and implies no license under patents, copyrights, trademarks, or trade secrets. No part of this publication may be copied, reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photographic, or otherwise). Furthermore, no part of this publication may be used as a basis for manufacture or sale of any items without the prior written consent of Cirrus Logic, Inc. The names of products of Cirrus Logic, Inc. or other vendors and suppliers appearing in this document may be trademarks or service marks of their respective owners which may be registered in some jurisdictions. A list of Cirrus Logic, Inc. trademarks and service marks can be found at http://www.cirrus.com. CIRRUS LOGIC REFERENCE DESIGN DATA SHEET 2 DS308RD5A1 CRD4281-5 CrystalClear™ AC '97 Low Cost PCI Audio Adapter joystick interface and a buffer circuit for the external MIDI connection. The layout of this section complies with the PCI specification version 2.1 [2] for add-in cards. Please refer to the schematic and layout sections of this document for more information. For more information on the CS4281, refer to the CS4281 Data Sheet [3]. PCI Power Requirements 3.3 V power for the CS4281 is generated from the +5 V on the PCI connector and regulated to +3.3 V using a low dropout linear voltage regulator. This is required since not all mother boards are guaranteed to have +3.3 V power available on the PCI connectors. Joystick/MIDI connection The DB-15 connector allows a joystick or an external MIDI device to be connected to the CS4281. The external connection can also take MIDI data from an external source to the CS4281. A buffer circuit allows the MIDIOUT pin of the CS4281 to drive an external MIDI devices requiring 5 V signaling levels. External EEPROM The CS4281 EEPROM contains the required Subsystem Vendor ID and Subsystem ID values. The CS4281 uses 9 data bytes in the EEPROM for configuration. The PCI Special Interest Group assigns manufacturers a Subsystem Vendor ID. To meet WHQL™ standards, the Subsystem ID must be a non-zero value. A separate utility, PCIRSRC.EXE, is supplied with this kit to download configuration and OEM specific data to the EEPROM. Please call Cirrus Logic PC Products Audio Division at (512) 445-7222 to have a Subsystem ID assigned to a particular project. For information regarding the programming and timing of the EEPROM, refer to the CS4281 Data Sheet [3]. CS4297A AUDIO CODEC ‘97 The CS4297A is a mixed-signal serial Codec based on the AC ‘97 specification. The CS4281 Controller is responsible for all communications between the CS4297A and the rest of the system. The CS4297A functions as an analog mixer, a stereo ADC, a stereo DAC, and a control and digital audio stream interface to the CS4281. The CS4297A contains two distinct functional sections: digital and analog. The digital section includes the AC-link registers, power management support, SYNC detection circuitry, and AC-link serial port interface logic. The analog section includes the analog input multiplexer (mux), stereo output mixer, mono output mixer, stereo ADCs, stereo DACs, and analog volume controls. For more information refer to the CS4297A Data Sheet [4], which also discusses the capacitors required for the CS4297A and their placements. Codec Power Requirements A Motorola MC78L05CDT regulates the PCI +12 V supply down to provide a clean +5 V analog supply for the CS4297A. A voltage regulator is recommended for the analog supply. The MC78L05CDT regulator provides adequate current for the CS4297A and associated analog circuitry. AUDIO INPUTS AND OUTPUTS The CS4297A has multiple analog inputs and outputs that may or may not be used depending on the system’s application. Unused inputs should be tied to Vrefout (pin 28) or capacitively coupled via 0.1 µF to the analog ground plane. The analog section contains the components for a headphone amplifier or power amplifier as a stuff option. The Modem Audio, CD In, Video In and Aux In headers are also part of the Analog I/O section. The header and its associated components are optional based on feature requirements. CIRRUS LOGIC REFERENCE DESIGN DATA SHEET DS308RD5A1 3 CRD4281-5 CrystalClear™ AC '97 Low Cost PCI Audio Adapter A full feature set of the CS4297A’s analog I/O is represented on the reference design card through internal headers and external connectors: • • • • • • • Line Out Mic In Line In CD In Modem audio connection Aux In Video In Line Out The output of the CS4297A is capable of driving impedances greater than 10 kΩ with a maximum output voltage of 1 Vrms. The ouput drive is adequate for self-powered speakers or external power amplifiers. Two additional population options are available for driving lower impedances. The first option populated is a low-noise, low-distortion amplifier for driving headphones, typically impedances greater than 30 Ω. The second option is a power amplifier for driving 8 Ω or 4 Ω speakers. The Line Out connection is through the external 1/8" jack. • • The Microphone In 1/8" jack provides an input to a microphone pre-amplifier circuit that applies 18 dB of gain to the signal. • • Capable of driving low impedance loads such as 32 Ω headphones Maximum output level: 2.0 Vrms The CD In audio input headers are connected in parallel, which means only one can be active at a time. The first header is a 4 pin (0.1 inch center) right-angled connector that is compatible with the Sony and ATAPI standards. • • • • Capable of driving low impedance loads such as 4 Ω or 8 Ω speakers Maximum output level: 2.9 Vrms into 4 Ω or 8 Ω • The Line In 1/8" jack provides an input to the Line In pins of the CS4297A. Maximum input level: 2 Vrms 2 mm connector wired as: - Pin 1 : Right Channel - Pin 2 : Analog Ground - Pin 3 : Left Channel - Pin 4 : Analog Ground Aux In • Line In Maximum input level: 2 Vrms Differential input using the CD common pin as the ground 0.1 inch connector wired as: - Pin 1 : Left Channel - Pin 2 : Analog Ground - Pin 3 : Analog Ground - Pin 4 : Right Channel The second option is a 4 pin (2 mm center) Mitsumi shrouded connector. Power Amp output option: • Maximum input level: - Microphone Boost enabled: 12.5 mVrms - Microphone Boost disabled: 125 mVrms Supports 3-pin electret (power on ring) and 2pin dynamic microphones CD In Maximum output level: 1 Vrms Headphone Amp output: • Mic In • Internal 4-pin (0.1 inch center) right-angled connector Wired as: - Pin 1 : Left Channel - Pin 2 : Analog Ground CIRRUS LOGIC REFERENCE DESIGN DATA SHEET 4 DS308RD5A1 CRD4281-5 CrystalClear™ AC '97 Low Cost PCI Audio Adapter • - Pin 3 : Analog Ground - Pin 4 : Right Channel Maximum input level: 2 Vrms Video In • • Internal 4-pin (0.1 inch center) right-angled connector Wired as: - Pin 1 : Left Channel - Pin 2 : Analog Ground - Pin 3 : Analog Ground - Pin 4 : Right Channel Maximum input level: 2 Vrms Modem Audio Connection The modem audio connection can be made through the internal 4-pin (0.1 inch center) right-angled connector. This connector carries both a mono input and a mono output. The Mono Out signal from the CRD4281-5 transfers audio to the modem, and the Phone signal receives audio from the modem. • • • • • Internal 4 pin header (0.1 inch center) Wired as: - Pin 1 : Phone Input (from modem) - Pin 2 : Analog Ground - Pin 3 : Analog Ground - Pin 4 : Mono output (to modem) Phone maximum input level: 1 Vrms Mono Out maximum output level: 0.7 Vrms Minimum load impedance: 10 kΩ SCHEMATIC DESCRIPTION Figures 1 through 9 show the schematics for the CRD4281-5 card. This section will describe particular pages of the schematic that need to be discussed. Figure 1: Block Diagram The block diagram is an interconnection overview between schematic pages. Figure 2: Analog Inputs The inputs for AUX, VIDEO, CD, and LINE are passed through a divider circuit that reduces the voltage by 6 dB to allow connection of line level sources up to 2 Vrms. The 220 pF capacitors are provided on Line In, Mic In, CD In, Aux In, Video In, and Internal Modem connection for EMC suppression. These may be removed if EMC testing determines they are not required. 2.2 µF AC coupling capacitors are used on the Line In, Mic In, CD In, Aux In, Video In, and Internal Modem circuit to minimize the low frequency rolloff. The internal CD audio connection utilizes a pseudo-differential interface with CD GND as the common return path for both the left and right channels. Therefore, the input impedance of this block is half of that of the other inputs. An additional CD In connector footprint, J2, is provided to support the legacy 2mm, Mitsumi style, analog connector. Since J1 and J2 are on top of each other, only one CD In audio connector can be installed. The modem connection is both a mono input and output. The output is fed from the CS4297A’s MONO_OUT. No standards exists for the internal modem connector. R34, R35, and R36 are added in case voltage dividers are required to adjust signal levels. If an output voltage lower than 1 Vrms is desired, the resistors can be replaced with appropriate values, as long as the total load on the output is kept greater than 10 kΩ. The input is not divided and can accommodate a line level source up to 1 Vrms. Figure 3: Microphone Pre-amp and Bias A Motorola MC33078D low noise dual op-amp provides an +18 dB gain stage for the microphone and buffers the phantom power supply for the mic. The phantom power is derived from the +5 V analog supply and buffered by U1A to provide a max- CIRRUS LOGIC REFERENCE DESIGN DATA SHEET DS308RD5A1 5 CRD4281-5 CrystalClear™ AC '97 Low Cost PCI Audio Adapter imum of 4.2 V with no load and a minimum of 2.0 V under a 0.8 mA load on the ring, as required by PC Design Guidelines, Chapter 17, Audio Components [6]. To accommodate PC 99 recommendation, the microphone circuit is implemented to have -3 dB rolloffs at 60 Hz and 15 kHz. Figure 4: Analog Output, Headphone Amp, Power Amp Three population options are provided for audio out. The first population option is a headphone amplifier, the Motorola MC1458, which is capable of driving stereo headphones with impedances greater than 30 Ω or powered speakers. A jumper must be installed across pins 2 & 3 of JP1 and JP2 for proper operation. The headphone amp can be bypassed by the OEM or customer by installing the jumper across pins 1 & 2 of JP1 and JP2. The second population option is the addition of a power amplifier, the Philips TDA1517P. A jumper must be installed across pins 2 & 3 of JP1 and JP2 for proper operation. The power amp can be bypassed by the OEM or customer by installing a jumper across pins 1 & 2 of JP1 and JP2. Figure 6: CS4297A AC’97 Audio Codec R17 and R18 are termination resistors in the serial AC link between the CS4297A and the CS4281. All filtering capacitors of audio signals are NPOtype to ensure minimal added distortion. Two footprints are also provided for the crystal, XTAL. A CA-301 pin-in-hole footprint, Y1, for miniature crystals, and a standard HC-49S package, Y2. Figure 7: MIDI and Joystick Connection A buffer driver circuit is used on the MIDIOUT pin to provide the necessary 5 V TTL compatible output on the DB-15 connector. This circuit can be removed, and R37 populated to bypass the buffer circuit if a 3.3 V compatible output is sufficient. L4, C72, C77, C78, C79 are provided for EMC suppression and can be removed if EMC testing shows they are not required. In this case replace L4 with a 0 Ω resistor. C73 - C76 and C80 - C83 are functional to the joystick circuitry as well as provide for EMC suppression and therefore must not be removed. Figure 8: PCI Bus Connection The third and least expensive option is to not populate either the headphone amp or power amp. This option is the least flexible since only powered speakers can be driven. A jumper must be installed across pins 1 & 2 of JP1 and JP2 for proper operation. The PCI 2.1 specification requires that each unused +3.3 V power pin should be connected with an average of 0.01 µF capacitor [2]. Seven 0.1 µF capacitors in parallel provide the required capacitance for the +3.3 V power pins. 0 Ω resistors R43 and R44 can be used to omit the +3.3V regulator if this voltage is known to be provided on the PCI bus. Figure 5: CS4281 PCI Controller Figure 9: Power Supplies The 0.1 µF capacitors connected to the power pins of the CS4281 should be as close as possible to the chip. L3, C56, and C57 are used to filter the power supply for the internal DLL circuit. R19 and R20 are termination resistors in the serial AC link between the CS4297A and the CS4281. All unused input and bi-directional pins are tied to their respective inactive levels through a 10 kΩ resistor. The CS4297A requires both a digital +3.3 V and an analog +5 V supply. The digital power is supplied from the PCI bus. A separate regulator is recommended for the analog voltage supply to provide good audio signal quality. A Motorola MC78L05 regulates the +12 V supply from the PCI bus down to a clean +5 V analog supply. For the best audio performance, the analog voltage regulator, should be located near the CS4297A. Two packaging options are supported, where U2 is an SO8 surface CIRRUS LOGIC REFERENCE DESIGN DATA SHEET 6 DS308RD5A1 CRD4281-5 CrystalClear™ AC '97 Low Cost PCI Audio Adapter mount package and U3 is a TO-92 pin-in-hole package. The -12 V power pin is decoupled through C29/C30, and supplies power to the headphone circuit. The low drop-out voltage regulator, Micrel MIC2920A, is used to provide the required +3.3 V to the CS4281 in the absence of +3.3 V on the PCI bus. Two packaging options are supported. U8 is a SOT-223 surface mount package, and U9 is a TO220 pin-in-hole package. 0 Ω resistors are provided as a stuffing option if +3.3V is known to be available on the PCI bus. CS4614 / CS4280 Compatibility This board is backwards compatible with CS4614 and CS4280. The following pull-up resistors are not integrated on those chips and need to be populated externally on the board. • • • R76 and R77 for hardware volume control R23 for MIDI Input R24-R27 for Joystick buttons Component Selection Great attention was given to the particular components used on the CRD4281-5 board with cost, performance, and package selection as the most important factors. Listed are some of the guidelines used in the selection of components: • • • • • • No components smaller than 0805 package. Only single package components; no resistor packs. 8-pin devices are in surface mount packages. The TDA1517P power amp is pin in hole package Dual footprint for XTAL. Standard H49S, and small circular CA-301 pin in hole package. Dual footprint for +5 V and +3.3 V regulators. Surface mount and pin in hole packages are supported. EMC Components A number of capacitors and inductors are included to help the board meet EMC compliance tests, such as FCC Part 15. Modifying this selection of components without EMC testing could result in EMC compliance failure. GROUNDING AND LAYOUT The component layout and signal routing of the CRD4281-5 provides a good example of how to layout a PCI add-in card. PCI-bus based add-in cards have explicit requirements on trace lengths that are not imposed on motherboard designs. These trace length limits for add-in cards are as follows: • Maximum trace length for 32-bit signals on 32bit and 64-bit cards is 1.5 inches. • Maximum trace lengths for signals on the 64bit extension are 2 inches. • Trace length for the PCI CLK signal is 2.5 inches ± 0.1 inch. • The PCI CLK signal must drive only one load. Please refer to the PCI 2.1 Specification [2], Section 4.3.6, for information on routing PCI bus signals on a motherboard. Partitioned Voltage and Ground Planes The CRD4281-5 is partitioned into a digital and analog section to keep digital and analog ground currents from crossing. Ground currents from digital signals are inherently noisy with respect to analog signals and should be isolated from the audio section. The first rule in laying out mixed signal PCBs is to keep all digital signals over the digital ground plane and all analog signals over the analog ground plane. When digital and analog signals cross planes, they introduce noise into the audio section reducing performance. The pinout of the CS4297A allows the ground split to completely separate digital signals on one side and analog signals on the other. This split is located CIRRUS LOGIC REFERENCE DESIGN DATA SHEET DS308RD5A1 7 CRD4281-5 CrystalClear™ AC '97 Low Cost PCI Audio Adapter very close to the CS4297A so analog and digital ground return currents originating from the CS4297A may flow through their respective ground planes. A bridge is made across the split to maintain the proper reference potential for each ground plane. The area around the crystal oscillator and the two XTAL signals is filled with copper on the top and bottom sides and attached to digital ground. This ground plane serves to keep noise from coupling onto these pins. All data converters are highly susceptible to noise on the crystal pins. A separate chassis ground provides a reference plane for all of the EMC components. The chassis ground plane is connected to the analog ground plane at the external jacks. CS4297A Layout Notes Refer to the CS4297A Data Sheet [4] for partitioning and bypass capacitors placement. Pay close attention to bypass capacitors on REFFLT, AFLT1, AFLT2 and the power supply capacitors. The pinout of the CS4297A is designed to keep digital and analog signals from crossing when laying out the board. REFERENCES 1) Intel, Audio Codec ‘97 Component Specification, Revision 2.1, May 22, 1998. http://developer.intel.com/pc-supp /platform/ac97/ 2) PCI Special Interest Group, PCI Local Bus Specification, Revision 2.1, June 1, 1995. http://www.pcisig.com/ 3) Cirrus Logic, CS4281 PCI Audio Interface Data Sheet http://www.cirrus.com/products /overviews/cs4281.html 4) Cirrus Logic, CS4297A SoundFusion Audio Codec ‘97 Data Sheet http://www.cirrus.com/products /overviews/CS4297A.html 5) Steve Harris, Clif Sanchez, Personal Computer Audio Quality Measurements, Ver 0.5 http://www.cirrus.com/products /papers/meas/meas.html 6) Microsoft, PC Design Guidelines, http://www.microsoft.com/hwdev/desguid/ 7) M. Montrose. Printed Circuit Board Design Techniques for EMC Compliance, IEEE Press, New York: 1996. ADDENDUM • • • • Schematic drawings Layout drawings Bracket drawings Bill of materails CIRRUS LOGIC REFERENCE DESIGN DATA SHEET 8 DS308RD5A1 CRD4281-5 CrystalClear™ AC '97 Low Cost PCI Audio Adapter CS4297 MIC IN MIC1 MIC1 Power AUDIO IN AUX_R AUX_L VIDEO_R VIDEO_L PHONE_IN MONO_OUT CD_INR CD_INL CD_COM AUDIO OUT AUX_R AUX_L LINE_OUTL LINE_OUTR VIDEO_R VIDEO_L EAPD PHONE_IN MONO_OUT LINE_OUTL LINE_OUTR EAPD ABITCLK ASDIN ASDOUT CD_INR CD_INL CD_COM LINE_INR LINE_INL ASYNC ARST# LINE_INR LINE_INL JBB2 JBB1 JBCY JBCX JAB2 JAB1 JACY JACX JAB2 JAB1 JACY JACX C/BE[3..0]# AD[31..0] JBB2 JBB1 JBCY JBCX DEVSEL# PERR# IDSEL REQ# CLK GNT# RST# C/BE[3..0]# AD[31..0] MIDIOUT MIDIIN PAR STOP# TRDY# FRAME# INTA# IRDY# MIDIOUT MIDIIN ASYNC ARST# MIDI_JOY ABITCLK ASDIN ASDOUT CS4281 DEVSEL# PERR# IDSEL REQ# CLK GNT# RST# C/BE[3..0]# AD[31..0] PAR STOP# TRDY# FRAME# INTA# IRDY# PCI_BUS Figure 1. Block Diagram CIRRUS LOGIC REFERENCE DESIGN DATA SHEET DS308RD5A1 9 10 R G 4 3 2 1 J6 4X1HDR-SN/PB 4 3 2 1 AGND C22 220pF NPO R60 R59 6.8K 6.8K 6.8K 6.8K C12 2.2uF C16 2.2uF + C18 2.2uF + Figure 2. Audio In VIDEO_L VIDEO_R AUX_L 4 3 2 1 1 2 3 4 B4B-PH-K J2 D O N OT P O P U L AT E J2 R GND L GND J1 4 3 2 1 4X1HDR-SN/PB R G G L CDROM IN 47K C5 AGND 47K R36 AGND C6 AGND 27K AGND 220pF 220pF 220pF NPO NPO NPO C4 C102 220pF NPO AGND C101 220pF NPO AGND R35 R34 2.2uF 6.8K 6.8K AGND R62 C1 2.2uF C3 2.2uF C2 2.2uF 6.8K 6.8K 3.4K R61 R57 R55 3.4K R54 R53 C100 C99 2.2uF + AGND C21 220pF NPO AGND R58 R56 6.8K 6.8K + R G G L C14 220pF NPO R52 R51 + AGND C13 220pF NPO AGND 6.8K R50 AUX_R J11 4X1HDR-SN/PB FROM MODEM R G G L TO MODEM INTERNAL MODEM + VIDEO IN AGND 6.8K LINE_INL C11 2.2uF C8 2.2uF R48 6.8K 6.8K LINE_INR + 4X1HDR-SN/PB L J4 G CGND C10 220pF NPO R49 R47 C7 2.2uF + AUX IN AGND C9 220pF NPO AGND 6.8K 6.8K + PHONO-1/8 Connect CGND to AGND at the jack J3 4 3 2 1 5 R46 R45 + MITSUMI Line In CD_INL CD_COM CD_INR PHONE_IN MONO_OUT CRD4281-5 CrystalClear™ AC '97 Low Cost PCI Audio Adapter + CIRRUS LOGIC REFERENCE DESIGN DATA SHEET DS308RD5A1 DS308RD5A1 3) Populate: 0.1uF for C110 J5 PHONO-1/8 Connect CGND to the jack 4 3 2 1 5 AGND CGND C112 NPO 220pF R73 2.7K AGND C114 0.1uF X7R +5VA C111 NPO 220pF place close to pins 8 and 4 100 ohm for C109 (fits on the same pad) 2.5K for R68 2.2K for R73 2) Populate R79, R80 and C119 1) Do not populate U10, R68, R69, R70, R71, R72, R74, R75, C113, C114 and C115. For Microphone Circuit without Op Amp R71 100K Figure 3. Mic In - + C119 0.1uF X7R 2 MC33078D 3 U10A AGND AGND +5VA 0 Do not populate R80 & C119 for Pre Amp Mic Circuit X7R C109 0.068 uF AGND 68K R69 1 R79 Do not populate R79 for Pre Amp Mic Circuit 0 R80 AGND + 10UF C108 10UF C113 R74 6.8K R72 47K AGND + AGND +5VA R70 47K R68 47K R75 7 MC33078D U10B 47K 220pF AGND NPO C115 6 - 5 + +5VA C110 X7R 1uF MIC1 CRD4281-5 CrystalClear™ AC '97 Low Cost PCI Audio Adapter CIRRUS LOGIC REFERENCE DESIGN DATA SHEET 11 CRD4281-5 CrystalClear™ AC '97 Low Cost PCI Audio Adapter R4 0 470UF C23 1 2 C23 & C24 ARE REQUIRED FOR POWER AMP ONLY. STUFF R4 & R7 WHEN USING HEADPHONE AMP. 1 2 JP1 3 3x1 HDR 470UF C24 1 2 R7 0 1 2 JP2 3 3x1 HDR SPEAKER OUT J8 4 3 2 1 5 R5 220K C26 220pF NPO R6 220K C27 220pF NPO PHONO-1/8 AGND HEADPHONE AMP OPTION 22pF C25 NPO CGND R8 56K Connect CGND to AGND at the jack AGND -12VA R9 27K 2 1 3 +12VA AGND U1A MC1458 22pF C28 NPO R10 56K -12VA R11 27K 6 7 5 +12VA AGND U1B MC1458 C34 LINE_OUTR 1 R12 47K POWER AMP OPTION +12VA ATTN. BY -10 .75 dB V = .29 Vr ms R13 5.6K C35 1.0uF 2 1 2 3 4 5 6 7 8 9 10UF C36 LINE_OUTL 1 VIN(max) = 1 Vrms 10UF R14 47K C37 1.0uF 2 R15 Q3 MMBT3904LT1 R16 AGND U4 -INV1 GND11 GND1GND10 SVRR GND9 OUT1 GND8 GND2 GND7 OUT2 GND6 VP GND5 M/SS GND4 -INV2GND3 18 17 16 15 14 13 12 11 10 MAX POWER INTO 4 ohms P=Vsq/4; V=2.9 Vr ms=8.2 Vp-p P=2.1W TDA1517P +20 dB GAIN (FIXED) AGND + 27K 27K AGND EAPD R78 2.2K 1 C39 10UF do not populate for C S 4 297. AGND This pin is availa ble for CS4297A and CS4299 Figure 4. Audio Out CIRRUS LOGIC REFERENCE DESIGN DATA SHEET 12 DS308RD5A1 CRD4281-5 CrystalClear™ AC '97 Low Cost PCI Audio Adapter U6 ABITCLK ASDOUT ASDIN ASYNC ARST# +3.3VD DGND +3.3VD R21 5.6K U7 1 2 3 4 nc1 nc2 nc3 Vss Vcc nc4 SCL SDA R19 47 R20 47 24LC00 DGND INTA# RST# CLK GNT# REQ# FRAME# IRDY# TRDY# DEVSEL# STOP# PERR# PAR IDSEL DGND DGND CS4281 PCIVDD PINS +3.3VD +3.3VD PIN 8 C58 0.1uF X7R PIN 7 +3.3VD PIN 21 C59 0.1uF X7R PIN 22 +3.3VD PIN 31 C60 0.1uF X7R PIN 30 PIN 39 C61 0.1uF X7R PIN 40 DGND DGND DGND DGND +3.3VD +3.3VD +3.3VD +3.3VD PIN 50 C66 0.1uF X7R PIN 49 DGND PIN 86 C67 0.1uF X7R PIN 87 DGND PIN 94 C69 0.1uF X7R PIN 93 DGND 81 82 83 84 85 15 16 17 20 23 24 26 99 67 93 25 19 18 AD00 AD01 AD02 AD03 AD04 AD05 JAB1 AD06 JAB2 AD07 JBB1 AD08 JBB2 AD09 JACX AD10 JBCX AD11 JBCY AD12 JACY AD13 MIDIIN AD14 MIDIOUT AD15 ASDIN2/GPIO1 AD16 GPIO3 AD17 VOLUP AD18 VOLDN AD19 EECLK/GPOUT/PCREQ#AD20 EEDAT/GPIO2/PCGNT#AD21 TEST AD22 TESTSEL AD23 AD24 INTA AD25 RST AD26 PCICLK AD27 PCI_GNT AD28 PCI_REQ AD29 FRAME AD30 IRDY AD31 TRDY DEVSEL CBEO STOP CBE1 PERR CBE2 PAR CBE3 IDSEL PME# CLKRUN# CRYVDD IRQA CRYGND IRQB IRQC AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7 AD8 AD9 AD10 AD11 AD12 AD13 AD14 AD15 AD16 AD17 AD18 AD19 AD20 AD21 AD22 AD23 AD24 AD25 AD26 AD27 AD28 AD29 AD30 AD31 38 27 14 98 C/BE0 C/BE1 C/BE2 C/BE3 68 3.3VAUX 12 61 86 100 8 21 31 39 50 73 CVDD1 CVDD2 PCIVDD0 PCIVDD2 PCIVDD3 PCIVDD4 PCIVDD5 PCIVDD6 PCIVDD7 VDD5REF CGND1 CGND2 CGND3 13 62 65 PCIGND0 PCIGND2 PCIGND3 PCIGND4 PCIGND5 PCIGND6 PCIGND7 87 1 7 22 30 40 49 56 57 58 59 52 54 55 53 60 63 66 94 70 71 79 80 51 64 VOLUP VOLDN 8 7 6 5 AD[31..0] 48 47 46 45 44 43 42 41 37 36 35 34 33 32 29 28 11 10 9 6 5 4 3 2 97 96 95 92 91 90 89 88 74 75 76 77 78 JAB1 JAB2 JBB1 JBB2 JACX JBCX R63 JBCY 10K JACY MIDIIN MIDIOUT CS4281 ABITCLK ASDOUT ASDIN ASYNC ARST C/BE[3..0]# PIN 100 C116 0.1uF X7R PIN 1 +5V_PCI DGND C/BE[3..0]# +3.3VD L3 120@100MHz 69 72 C56 1000pF NPO +3.3VD DGND AD[31..0] C57 0.1uF X7R DGND DGND CS4281 CVDD PINS +3.3VD +3.3VD PIN 12 C62 0.1uF X7R PIN 13 DGND +3.3VD +3.3VD PIN 19 C64 0.1uF X7R PIN 18 DGND CS4281 3.3VAUX PIN +3.3VD PIN 68 C70 0.1uF X7R PIN 67 +3.3VD PIN 61 C117 0.1uF X7R PIN 62 DGND C65 0.1uF X7R PIN 64 C118 0.1uF X7R PIN 65 R76 Do not populate R76 & R77 R77 for Cs4281 4.7K 4.7K DGND J12 DGND Hardware Volume Control U G G D 4 3 2 1 R64 100 VOLUP R65 100 VOLDN 4X1HDR-SN/PB C104 100pF C105 100pF COG COG DGND DGND DGND Figure 5. CS4281 PCI Audio Controller CIRRUS LOGIC REFERENCE DESIGN DATA SHEET DS308RD5A1 13 14 C49 0.1uF X7R TIE UNUSED ANALOG INPUTS TO VREF. C51 1.0uF 1.0uF AGND C52 0.1uF X7R + 27 28 29 30 12 13 14 15 16 17 18 19 20 21 22 23 24 8 10 11 2 3 1 9 25 38 C42 0.1uF X7R AGND +5VA REFFLT Vrefout AFLT1 AFLT2 PC_BEEP PHONE AUX_L AUX_R VIDEO_L VIDEO_R CD_L CD_GND CD_R MIC1 MIC2 LINE_IN_L LINE_IN_R SDATA_IN SYNC RESET# XTL_IN XTL_OUT DVdd1 DVdd2 AVdd1 AVdd2 U5 C43 0.1uF X7R C44 0.1uF X7R BCFG FLT3D FLTI FLTO nc5 nc6 nc7 ID0# ID1# EAPD S/PDIF_OUT ALT_LINE_OUT_L ALT_LINE_OUT_R MONO_OUT LINE_OUT_L LINE_OUT_R BIT_CLK SDATA_OUT DVss1 DVss2 AVss1 AVss2 CS4297A 31 32 33 34 40 43 44 45 46 47 48 39 41 37 35 36 6 5 4 7 26 42 Figure 6. CS4297A AC ’97 Audio Codec DGND C41 0.1uF X7R +5V_PCI 10UF C40 47 C54 1000pF NPO R17 +5V_PCI +5VA C53 1000pF NPO LINE_INL LINE_INR PHONE_IN AUX_L AUX_R VIDEO_L VIDEO_R CD_INL CD_COM CD_INR MIC1 C46 22pF NPO ASDIN ASYNC ARST# DGND 24.576 MHz C50 DGND C45 22pF NPO 24.576 MHz Y2 Y1 layout Y1 on top of Y2 -- populate only one XTAL DUAL FOOTPRINT LAYOUT FOR XTAL. 47 R66 R18 DGND AGND AGND C107 1000pF NPO 0 C48 680pF NPO C103 680pF NPO EAPD AGND Do not populate C107, C106 for CS4297. C106 X7R 0.01uF Do not populate R66. C47 680pF NPO AGND MONO_OUT LINE_OUTL LINE_OUTR ABITCLK ASDOUT CRD4281-5 CrystalClear™ AC '97 Low Cost PCI Audio Adapter CIRRUS LOGIC REFERENCE DESIGN DATA SHEET DS308RD5A1 39K R40 1 100 DGND 20K R42 10K R41 R30 R32 R33 R31 C81 12000pF X7R 2.2K 2.2K 2.2K 2.2K DGND MMBT3904LT1 Q2 MIDI_BUF 5.1K R39 +5V_PCI DGND 1 C83 12000pF X7R MMBT2907ALT1 Q1 +3.3VD 2 3 optional MIDI out buffer -- populate as necessary Place Near Inky 39K R38 R37 C82 12000pF X7R populate instead of MIDI out buffer as necessary C80 12000pF X7R 3 2 F H3 F H4 H5 C73 1000pF NPO 4.7K R24 C76 1000pF NPO 4.7K R27 Figure 7. Joystick/MIDI Circuitry FIDUCIAL FIDUCIAL FIDUCIAL TOOLHOLE F H2 C75 1000pF NPO 4.7K 4.7K C74 1000pF NPO R26 R25 C78 100pF COG CGND 31@100MHz COG Po pulate R23 for CS4280 L4 C77 100pF 47K R23 +5V_PCI C79 0.1uF X7R CGND 1 9 2 10 3 11 4 12 5 13 6 14 7 15 8 0.1uF X7R C72 J10 DB15 16 DS308RD5A1 17 +5V_PCI CRD4281-5 CrystalClear™ AC '97 Low Cost PCI Audio Adapter CIRRUS LOGIC REFERENCE DESIGN DATA SHEET 15 CRD4281-5 CrystalClear™ AC '97 Low Cost PCI Audio Adapter +12VD +5V_PCI +3.3V_PCI +3.3V_PCI P1 +5V_PCI PCI Bus +3.3V supply. Place near PCI edge +3.3V_PCI connector -12VD P2 PCI BUS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 INTA# PCI Bus +5V_PCI Side B near pin 1 + C84 10uF ELEC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 C85 0.1uF X7R C/BE[3..0]# C/BE[3..0]# RST# DGND CLK REQ# GNT# AD30 AD31 AD29 AD28 AD26 AD27 AD25 AD24 C/BE3 IDSEL AD23 AD22 AD20 AD21 AD19 AD18 AD16 AD17 C/BE2 FRAME# IRDY# TRDY # DEVSEL# STO P# PERR# PAR AD15 C/BE1 AD14 AD13 AD11 AD12 AD10 AD9 C/BE0 AD8 AD7 AD6 AD4 AD5 AD3 AD2 AD0 AD1 AD[31..0] + Side A 1 AD[31..0] TRST# +12V TMS TDI +5V(1) INTA# INTC# +5V(2) RSVD(1) +5V(3) RSVD(2) GND(1) GND(2) RSVD(3) RST# +5V(4) GNT# GND(3) PME# AD[30] +3.3V(1) AD[28] AD[26] GND(4) AD[24] IDSEL +3.3V(2) AD[22] AD[20] GND(5) AD[18] AD[16] +3.3V(3) FRAME# GND(6) TRDY# GND(7) STOP# +3.3V(4) SDONE SBO# GND(8) PAR AD[15] +3.3V(5) AD[13] AD[11] GND(9) AD[9] KEY1 KEY2 C/BE[0]# +3.3V(6) AD[6] AD[4] GND(10) AD[2] AD[0] +5V(5) REQ64# +5V(6) +5V(7) C93 0.1uF X7R PCI BUS 5V A -12V TCK GND11 TDO +5V(8) +5V(9) INTB# INTD# PRSNT1# RSVD(4) PRSNT2# GND(12) GND(13) RSVD(5) GND(14) CLK GND(15) REQ# +5V(10) AD[31] AD[29] GND(16) AD[27] AD[25] +3.3V(7) C/BE[3]# AD[23] GND(17) AD[21] AD[19] +3.3V(8) AD[17] C/BE[2]# GND(18) IRDY# +3.3V(9) DEVSEL# GND(19) LOCK# PERR# +3.3V(10) SERR# +3.3V(11) C/BE[1]# AD[14] GND(20) AD[12] AD[10] GND(21) KEY3 KEY4 AD[8] AD[7] +3.3V(12) AD[5] AD[3] GND(22) AD[1] +5V(11) ACK64# +5V(12) +5V(13) C86 0.1uF X7R C87 0.1uF X7R C98 0.1uF X7R DGND PRSNT2#, PRSNT1# = 00 Power Requirement = 7.5W max +3.3V_PCI +3.3VD R43 0 R44 0 POPULATE 0 OHM RESISTORS ONLY IF 3.3V IS AVAILABLE ON PCI BUS AND 3.3V REGULATOR IS NOT REQUIRED +3.3V_PCI C94 0.1uF X7R C95 0.1uF X7R C96 0.1uF X7R C97 0.1uF X7R DGND Unused PCI Bus +3.3V supply. Place near PCI edge connector Side B C92 10UF PCI BUS 5V B DGND DGND Connect AGND to DGND with a 50 mil trace near the CS4297 Connect CGND to DGND with a 50 mil trace near the finger edge of the board. Figure 8. PCI Bus CIRRUS LOGIC REFERENCE DESIGN DATA SHEET 16 DS308RD5A1 C88 10UF IN DGND DGND OUT U8 OUT U9 3 3 + +12VD 100uF L2 -12VD C30 0.1uF X7R 31@100MHz L1 + +12VA 31@100MHz Figure 9. Power AGND C29 -12VA C89 10UF Connect AGND to DGND with a 50 mil trace near the 4297 Connect CGND to DGND with a 50 mil trace near the finger edge of the board. C91 0.1uF X7R +3.3VD MIC2920A,400ma,SOT223 C90 0.1uF X7R 1 IN U8 OR U9 IS NOT REQUIRED IF 3.3V IS AVAILABLE ON THE PCI BUS. IF REMOVED, STUFF 0 OHM RESISTORS AS SHOWN ON PAGE 8. CONTINUE TO POPULATE C88 - C91. + S U R FA C E M O U N T P O P U L AT I O N OPTION 1 GND 2 PIN IN HOLE P O P U L AT I O N OPTION +5V_PCI 100uF C31 AGND 5 NC1 VIN C33 0.1uF X7R 2 1 MC78L05AC OUT 1 VOUT GND4 GND1 3 4 MC78L05ACD GND3 GND2 NC2 U3 3 IN 8 7 6 U2 GND AGND 2 4 GND NC 2 1 2 1 2 + AGND +5VA 1 2 DS308RD5A1 + MIC2920A,400ma,TO220 C32 10UF PIN IN HOLE P O P U L AT I O N OPTION S U R FA C E M O U N T P O P U L AT I O N OPTION CRD4281-5 CrystalClear™ AC '97 Low Cost PCI Audio Adapter CIRRUS LOGIC REFERENCE DESIGN DATA SHEET 17 CRD4281-5 Figure 10. Assembly Drawing CrystalClear™ AC '97 Low Cost PCI Audio Adapter CIRRUS LOGIC REFERENCE DESIGN DATA SHEET 18 DS308RD5A1 CRD4281-5 Figure 11. Top Layer CrystalClear™ AC '97 Low Cost PCI Audio Adapter CIRRUS LOGIC REFERENCE DESIGN DATA SHEET 19 DS308RD5A1 CRD4281-5 Figure 12. Bottom Layer CrystalClear™ AC '97 Low Cost PCI Audio Adapter CIRRUS LOGIC REFERENCE DESIGN DATA SHEET 20 DS308RD5A1 CRD4281-5 Figure 13. Drill Drawing and Manufacturing Instructions CrystalClear™ AC '97 Low Cost PCI Audio Adapter CIRRUS LOGIC REFERENCE DESIGN DATA SHEET DS308RD5A1 21 CRD4281-5 Figure 14. Bracket Drawing CrystalClear™ AC '97 Low Cost PCI Audio Adapter CIRRUS LOGIC REFERENCE DESIGN DATA SHEET 22 DS308RD5A1 17 1 J10 18 19 20 21 1 3 1 1 J12 L1,L2,L4 L3 Q1 Part Description CAP, SMT A, ELEC, 2.2uF, 20%, 35V Type ELEC Package CE_2.2uF_35V Manf. PANASONIC Part Number ECE-V1VS2R2SR CAP, 0805, C0G, 220pF, 5%, 50V NPO 0805_221_C0G_50V_5% KEMET C0805C221J5GAC CAP, 0805, C0G, 22pF, 5%, 50V ALUM ELECT, 100uF,20%,16V,POL CAP, 0805, X7R, .1uF, 10%, 50V NPO PIH X7R 0805_220_C0G_50V_5% KEMET ECEA1CGE101 PANASONIC 0805_104_X7R_50V_10% KEMET C0805C220J5GAC ECA-1CM101 C0805C104K5RAC ALUM ELECT,10uF,20%,16V,POL ALUM CAP4X11U106L016 ECA-1CM100 CAP,1.0UF,SO,1206,+80/-20%,25V,Y5V CAP, 0805, C0G, 680pF, 5%, 50V CAP, 0805, C0G, 1000pF, 10%, 50V Y5V NPO NPO GRM42-6Y5V105Z25BL MURATA 0805_681_C0G_50V_5% KEMET 0805_102_C0G_50V_10% KEMET GRM42-6Y5V105Z25BL C0805C681J5GAC C0805C102K5GAC CAP, 0805, COG, 100pF, 5%, 50V CAP, 0805, X7R, 12000pF, 10%, 50V CAP, 0805, X7R, 68000pF, 10%, 50V CAP, 1206, X7R, 1uF, 10%, 25V HDR, 3x1, 0.025" PIN, 0.1" CTR HDR, 4X1, 0.025" PIN, 0.1" CTR, 150u" SN/PB 1/8" PHONO JACK COG X7R X7R X7R HEADER HEADER CONN 0805_101_COG_50V_5% 0805_123_X7R_50V_10% 0805_683_X7R_50V_10% 1206_1uF_X7R_25V_10% TSW-103-07-G-S MOLEX 70553-0038_0 AJ-0356A-5P C0805C101J5GAC C0805C123K5RAC C0805C683K5RAC C1206X7R500-105KNE TSW-103-07-G-S 70553-0038 AJ-3056A-5P CONN, 15D SHELL, FEMALE, RT ANGLE PC MOUNT HDR, 4X1, 0.025" PIN, 0.1" CTR, 150u" SN/PB IND, FBEAD, 1206, 31@100MHz, 25% IND, FBEAD, 1812, 120@100MHz, 25% TRAN, SO, PNP, SOT23 CONN AMP 747845-3 KEMET KEMET KEMET VENKEL SAMTEC MOLEX A/D ELECTRONICS AMP HEADER FERRITE FERRITE TRANS MOLEX 70553-0038_2 HF50ACB321611-T HF30ACB453215-T MMBT2907ALT1 MOLEX TDK TDK NATIONAL 70553-0038 HF50ACB321611-T HF30ACB453215-T MMBT2907ALT1 Table 1. Headphone Amp Population Option PANASONIC 747845-3 CRD4281-5 CIRRUS LOGIC REFERENCE DESIGN DATA SHEET CRD4281-5 Headphone Option Item Qty Reference 1 11 C1,C2,C3,C7,C8,C11, C12,C16,C18,C99,C100 2 16 C4,C5,C6,C9,C10,C13, C14,C21,C22,C26,C27, C101,C102C111,C112, C115 3 4 C25,C28,C45,C46 4 2 C29,C31 5 37 C30,C33,C41,C42,C43, C44,C49,C52,C57,C58, C59,C60,C61,C62,C64, C65,C66,C67,C69,C70, C72,C79,C85,C86,C87, C90,C91,C93,C94,C95, C96,C97,C98,C114, C116,C117,C118 6 10 C32,C34,C36,C40,C88, C89,C92,C108,C113, C84 7 2 C50,C51 8 3 C47,C48,C103 9 7 C53,C54,C56,C73,C74, C75,C76 10 4 C77,C78,C104,C105 11 4 C80,C81,C82,C83 12 1 C109 13 1 C110 14 2 JP1,JP2 15 4 J1,J4,J6,J11 16 3 J3,J5,J8 CrystalClear™ AC '97 Low Cost PCI Audio Adapter DS308RD5A1 BILL OF MATERIALS 23 24 1 1 1 1 U7 U9 U10 Y1 Type TRANS RES RES RES RES RES Package MMBT3904LT1 9C08052A0R00J 9C08052A224J 9C08052A5602J 9C08052A2702J 9C08052A4702J Manf. NATIONAL PHILIPS PHILIPS PHILIPS PHILIPS PHILIPS Part Number MMBT3904LT1 9C08052A0R00J 9C08052A224J 9C08052A5602J 9C08052A2702J 9C08052A4702J RES, SO, 0805, 47, 5%, 1/10W, METAL FILM RES,5.6K,SO,0805,5%,1/10W,METAL FILM RES, SO, 0805, 4.7K, 5%, 1/10W, METAL FILM RES RES RES 9C08052A47R0J 9C08052A5601J 9C08052A4701J PHILIPS PHILIPS PHILIPS 9C08052A47R0J 9C08052A4701J RES, SO, 0805, 2.2K, 5%, 1/10W, METAL FILM RES, SO, 0805, 100, 5%, 1/10W, METAL FILM RES, SO, 0805, 39K, 5%, 1/10W, METAL FILM RES, SO, 0805, 5.1K, 5%, 1/10W, METAL FILM RES, SO, 0805, 10K, 5%, 1/10W, METAL FILM RES, SO, 0805, 20K, 5%, 1/10W, METAL FILM RES, SO, 0805, 6.8K, 1%, 1/10W, METAL FILM RES RES RES RES RES RES RES 9C08052A2201J 9C08052A1000J 9C08052A3902J 9C08052A5101J 9C08052A1002J 9C08052A2002J 9C08052A6801F PHILIPS PHILIPS PHILIPS PHILIPS PHILIPS PHILIPS PHILIPS 9C08052A2201J 9C08052A1000J 9C08052A3902J 9C08052A5101J 9C08052A1002J 9C08052A2002J 9C08052A6801F 9C08052A3401F 9C08052A6802J 9C08052A1003J 9C08052A2701J MC1458 MC78L05ACP CS4297A CS4281 100PIN MQFP PHILIPS PHILIPS PHILIPS PHILIPS Motorola Motorola CRYSTAL CRYSTAL 9C08052A3401F 9C08052A6802J 9C08052A1003J 9C08052A2701J MC1458 MC78L05AC CS4297A CS4281 24LC00 MIC2920A-TO220 MC33078D FOX HC49S_24.576 MICROCHIP MIRCEL MOTOROLA FOX 24LC00/SN MIC2920A-3.3BT MC33078D FS24.576 RES, SO, 0805, 3.4K, 1%, 1/10W, METAL FILM RES, SO, 0805, 68K, 5%, 1/10W, METAL FILM RES, SO, 0805, 100K, 5%, 1/10W, METAL FILM RES, SO, 0805, 2.7K, 5%, 1/10W, METAL FILM DUAL HEADPHONE AMP 5V POS. VOLT. REG., 100ma IC, SO, AC ’97 2.0 SERIAL CODEC w/ SRC CS4281-100 MQFP DS308RD5A1 RES RES RES RES AMP VREG CODEC CONTROLLER IC, SO, SOIC8, SERIAL EEPROM, 16 x 8, 2.5V EE PROM MIC2090A,400MA,TO220 TO220 IC, SO, SOIC8, 33078, DUAL OP AMP OP AMP XTAL, 24.576MHz, HC49S,Fund Mode, Par Res PAR RES, FUND Table 1. Headphone Amp Population Option (cont.) CRD4281-5 46 47 48 49 Part Description TRAN, SO, NPN, SOT23 RES, SO, 0805, 0, 5%, 1/10W, METAL FILM RES,220K,SO,0805,5%,1/10,METAL FILM RES, SO, 0805, 56K, 5%, 1/10W, METAL FILM RES, SO, 0805, 27K, 5%, 1/10W, METAL FILM RES, SO, 0805, 47K, 5%, 1/10W, METAL FILM CrystalClear™ AC '97 Low Cost PCI Audio Adapter CIRRUS LOGIC REFERENCE DESIGN DATA SHEET CRD4281-5 Headphone Option Item Qty Reference 22 1 Q2 23 3 R4,R7,R66 24 2 R5,R6 25 2 R8,R10 26 3 R9,R11,R34 27 6 R35,R36,R68,R70,R72, R75 28 4 R17,R18,R19,R20 29 1 R21 30 6 R24,R25,R26,R27,R76, R77 31 4 R30,R31,R32,R33 32 2 R64,R65 33 2 R38,R40 34 1 R39 35 2 R41,R63 36 1 R42 37 17 R45,R46,R47,R48,R49, R50,R51,R52,R53,R54, R56,R58,R59,R60,R61, R62,R74 38 2 R55,R57 39 1 R69 40 1 R71 41 1 R73 42 1 U1 43 1 U3 44 1 U5 45 1 U6 Type Package Manf. Part Number CAP, 0805, C0G, 1000pF, 10%, 50V CERM CAP, .01uF, 10%, 50V,X7R CAP,1.0UF,SO,1206,+80/-20%,25V,Y5V ALUM ELECT,10uF,20%,16V,POL ALUM ELECT,470uF,20%,10V,POL CAP, 0805, X7R, .1uF, 10%, 50V RES, SO, 0805, 5.6K, 5%,1/10W, METAL FILM RES, SO, 0805, 2.2K, 5%,1/10W, METAL FILM RES, SO, 0805, 47K, 5%,1/10W, METAL FILM RES, SO, 0805, 27K, 5%,1/10W, METAL FILM RES, SO, 0805, 100, 5%,1/10W, METAL FILM NPO X7R Y5V ELEC PIH ELEC PIH X7R RES RES RES RES RES 0805_102_C0G_50V_10% 0805_103_X7R_50V_10% GRM42-6Y5V105Z25BL CAP4X11U106L016 ECEA1AGE471(470 uF) 0805_104_X7R_50V_10% 9C08052A5601J 9C08052A2201J 9C08052A4702J 9C08052A2702J 9C08052A1000J KEMET KEMET MURATA PANASONIC PANASONIC KEMET PHILIPS PHILIPS PHILIPS PHILIPS PHILIPS C0805C102K5GAC C0805C103K5RAC GRM42-6Y5V105Z25BL ECA-1CM100 ECA-1AM471 C0805C104K5RAC 9C08052A5601J 9C08052A2201J 9C08052A4702J 9C08052A2702J 9C08052A1000J 12 13 14 15 16 18 19 RES, SO, 0805, 0, 5%, 1/10W, METAL FILM TRAN, SO, NPN, SOT23 2X6W POWER AMP 5V POS. VOLT. REG., 100ma MIC2920A,400ma,SOT223 4 PIN SHROUDED HEADER, .08" XTAL, 24.576MHz, CA-301, Fund Mode, Par Res RES TRANS IC VREG VREG CONN PAR RES, FUND 9C08052A0R00J MMBT3904LT1 TDA1517P MC78L05ACD SOT223 B4B-PH-K EPSON CA-301_24.576 PHILIPS NATIONAL PHILIPS Motorola MIRCEL JST EPSON 9C08052A0R00J MMBT3904LT1 TDA1517P MC78L05ACD MI2920A-3.3BS B4B-PB-K CA-301_24.576M-C 2 1 1 1 1 1 1 R79,R80 Q3 U4 U2 U8 J2 Y2 Table 1. Headphone Amp Population Option (cont.) CRD4281-5 CIRRUS LOGIC REFERENCE DESIGN DATA SHEET Part Description CrystalClear™ AC '97 Low Cost PCI Audio Adapter DS308RD5A1 CRD4281-5 Headphone Option Item Qty Reference DO NOT POPULATE 1 1 C107 2 1 C106 3 2 C35,C37 4 1 C39 5 2 C23,C24 6 1 C119 7 1 R13 8 1 R78 9 3 R12,R14,R23 10 2 R15,R16 11 1 R37 25 Preliminary product information describes products which are in production, but for which full characterization data is not yet available. 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