Transcript
CS4315 Four 10 Gbps CDRs with EDC Overview The CS4315 Electronic Dispersion Compensation Device (CS4315 EDC) is highly integrated with four 10 Gbps clock and data recovery (CDR) circuits. The two receive channels have the optional integrated Electronic Dispersion Compensation (EDC) capability. This functionality supports 2 SFP+ modules that can be either limited or linear. Enabling the EDC capability allows the device to operate with linear SFP+ optical modules to extend the operating range of 62.5 ìm and 50 ìm multimode fiber to 220 meters and beyond, and greater than 7 meters of Direct Attach Copper cable. The CS4315 EDC will enable the 10 GE enterprise, metro or core market segments across all form factors through their size, low power, and availability. The CS4315 EDC enables the industry move to SFP+ by increasing multi mode fiber reach to over 220 meters; allowing a single board design all SFP+ interface types and making it possible for higher density line cards due to low power and small footprint.
Enabling 10G GB SFP+ and Backplane Applications Lower cost, lower power and higher port densities are driving SFP+ to become the predominant optical module format of these new 10G platforms. The lead application for the CS4315 EDC is enabling the migration of datacom and telecom routers and switches to the SFP+ optical module form factor. Four SFP+ reach applications have been standardized for 10 GbE networks: 10GBASE-SR, -LR, -LRM, and Direct Attach Copper. The CS4315 EDC supports all four applications. The CS4315 EDC incorporates two bi-directional 10 Gbps paths to support the increased port densities. Additional features of the CS4315 EDC include various lookbacks, a complete set of programmable Rx and Tx path functionality, such as output preemphasis, and full 1 GbE data rate support. Packaged in a small 12mm by 12mm flip-chip package, the CS4315 EDC has an integrated microcontroller to enable auto adapation. Successful interoperability testing of the CS4315 EDC with SFP+ optical modules and Direct Attach Copper cables from leading vendors has provided the broadest collection of real life system application data available in the industry with coverage for all four SFP+ applications: SR, LR, LRM, and Direct Attach Copper cable. The receive and transmit CDRs on the CS4315 have an operating frequency range of 9.95 to 11.3 Gbps. The CDRs also support 8G/4G/2G/1G Fibre Channel rates. The CS4315 also includes a 10GBASE-KR compliant 3-tap transmit pre-emphasis. The transmit pre-emphasis and receive equalization, along with the extended operating frequency range, make the CS4315 an ideal solution for backplane link extension, in 10GBase-KR, 10G telecom, and 10G/8G CS4212 applications.
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2953 Bunker Hill Lane, Suite 300, Santa Clara, CA 95054, Phone: (408) 217-7300 Fax: (408) 217-7350,
[email protected] Copyright © 2010−2014 Inphi Corporation. All rights reserved. Inphi is a registered trademark of Inphi Corporation.
Document Number: 450108 – 2.0
Functional Description
Functionality
Transmit Path
Receive Path
EDC
Physical Characteristics
Test and Monitoring
Designed to meet the requirements for systems and modules designed to SFF-8431 for both linear and limited Equalizer capability designed to exceed the requirements of IEEE 802.3aq* 10GBASE-LRM and 10GBASE-KR XFI interface complies to XFP MSA specifications Optional support of 1.25 Gbps (IEEE 802.3ae* 1 GE) Integrated design that does not require external processors or memory 3 tap pre-empahsis compliant to 10GBASE-KR specifications Programmable output voltage amplitude Option to invert the polarity of TX+ and TX- signals Integrated limiting amplifier with programmable equalizer Operating range of 9.95 - 11.3 Gbps, 8.5 G, 6.25 G, 4.25 G, 2.5 G, 2.125 G, 1.0625 G, and 1.25 G Programmable LOS level Exceeds XFP jitter generation requirements Option of pre-emphasis with level programmability Integrated EDC with option to bypass Driver with programmable output voltage amplitude Option to invert the polarity of RX+ and RX- signals Integrated AGC controlled by DSP Operating range of 9.95 - 11.3 Gbps, 8.5 G, 6.25 G, 4.25 G, 2.5 G, 2.125 G, 1.0625 G, and 1.25G Exceeds XFP jitter generation and jitter tolerance requirements Optional EDC Equalizer exceeds the comprehensive stressed receiver test described in 10GBASE-LRM specification Adaptation algorithm does not require any external processor or memory Default adaptation algorithm can be field upgradeable Advanced methods to analyze adaptation success including line SNR Continuously tracks and adapts to variations in channel characteristics 12x12mm 121-pin BGA 1.0mm ball pitch Multiple loopback modes Built-in PRBS generator and checkers Extensive set of performance and status registers GPIO pins with user programmable functionality Registers and status programmable through MDIO, SPI, or I2C management interface Serial management interface can be used to reset and read error and statistical counters JTAG 1149 Scan support
2953 Bunker Hill Lane, Suite 300, Santa Clara, CA 95054, Phone: (408) 217-7300 Fax: (408) 217-7350,
[email protected] Copyright © 2010−2014 Inphi Corporation. All rights reserved. Inphi is a registered trademark of Inphi Corporation.
Document Number: 450108 – 2.0
CS4315 EDC Diagram
2953 Bunker Hill Lane, Suite 300, Santa Clara, CA 95054, Phone: (408) 217-7300 Fax: (408) 217-7350,
[email protected] Copyright © 2010−2014 Inphi Corporation. All rights reserved. Inphi is a registered trademark of Inphi Corporation.
Document Number: 450108 – 2.0
