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GAMLA GT2210 TM
Baseband Analog Front End
The GAMLA TM Dual Channel Baseband AFE is the latest and fastest in home entertainment network solutions for ITU-T G.hn systems. TECHNOLOGY OVERVIEW Tangotec is committed to addressing the dramatically expanding connectivity requirements of the digital entertainment home. This next generation G.hn AFE delivers carrier grade broadband communications over all 3 mediums in the home (powerline, phoneline and coax).
PRODUCT OVERVIEW Tangotec’s GAMLATM Dual Channel Baseband Analog Front End (AFE) is based on the ITU-T G.hn (G.9960, G.9963 and G.9964) standard which supports blazing speeds of up to 2Gbps for IP entertainment networking over the powerline, coax and phoneline. The GAMLATM is an AFE chip containing an Rx Programmable Gain Amplifier (PGA), 12 bits Analog to Digital Converter (ADC), 12 bits Digital to Analog Converter (DAC). For Baseband applications (PowerLine, PhoneLine and Coax), the GAMLA TM AFE includes an integrated Line Driver. The GAMLA TM AFE supports raw throughput data of up to 2 Gbps.
MAIN FEATURES ITU-T G.hn (G.9960/G.9963/G.9964) AFE Powerline, Coax & Twisted Pair mediums Baseband - Operating frequency 0-200 MHz Supports Annex F - Plastic Optical Fiber (PoF) 25, 50, 100 and 200MHz Bandplans supporting throughput of up to 2Gbps Integrated Line Driver Single Reference Clock 12 bits DAC @500MSPS 12 bits ADC @500MSPS Low noise Up to +8dBm output Power Programmable gain for Tx and Rx (PGA) Variable Gain Amplifier supports 60 dB control range Low power consumption in Sleep Mode operation Extended temperature range: -40°C to +85°C Green Standard (ROHS) Compliant
TangoTec Ltd. | 14 HaMelacha Street, Netanya 42505, Israel | Tel: +972 4 853 0150
| Site: www.tangotec.com
Features & Specifications subject to change without notice. Copyright © 2013 TangoTec Ltd. All Rights Reserved. Rev.1.2
GAMLA GT2210 TM
Baseband Analog Front End AFE Block Diagram
LVDS XAUI
TX
DIGITAL INTERFACE
DAC
Tx Analog Front End
LPF
LINE DRIVER
TXP 1/2 TXN 1/2
SPI CLKOUT
LVDS XAUI
CONFIG CONTROL
RX
CLOCK GEN.
ADC
LPF
PLL
PGA
OSC_IN
RXN 1/2 RXP 1/2
The Tx of the GAMLATM AFE includes a Digital to Analog Converter (DAC), Low Pass Filter (LPF) and Programmable Gain Amplifier (PGA). The LPF cutoff frequency is set slightly above 200MHz to attenuate noise coming from the DAC, commutation frequency and its harmonics. The Tx PGA provides for programmable power control, followed by the level converter and integrated Line Driver. The Tx PGA provides voltage gain and digital gain control for the Tx signal between the Tx LPF and Tx Line Driver stages. The Tx PGA supports 30 dB of gain control, in 2 dB increments.
System Application Examples Rx Analog Front End
Ethernet over Power Line or Coaxial Cable or Phoneline or PoF Bridge
Power Plug Coaxial Cable Phoneline Plastic Optical Fiber
BB Powerline Interface BB Coax Interface 4 GigE LAN Ports
BB Phone Interface PoF Annex F Memory
Flash
APPLICATIONS Home AV networks 3DTV, High definition and Standard definition in home video distribution, Multi-room DVR Video and audio streaming in Media Gateway applications Thin clients Voice Over IP (VoIP) Shared Broadband Internet Access PC file and application sharing Security and Surveillance Gaming Last Mile
The Rx part of the GAMLATM AFE includes an external Bandpass filter and Variable Gain Amplifier (VGA). The Rx VGA gain is automatically controlled by the Automatic Gain Control (AGC) logic from the MAC. The AGC controls the AFE Rx gain to provide an optimum signal level to the Analog to Digital Converter (ADC). The Rx VGA provides low-noise VGA with a digital gain control of the Rx signal from the input stage. The Rx VGA provides 60 dB of gain control range, in 1 dB increments. The primary requirement of the Rx VGA is to provide the maximum signal-to-noise ratio possible at the ADC input. The system AGC through firmware in the G.hn MAC/PHY selects the optimum Rx gain setting to provide the highest input voltage to the ADC without clipping on signal peaks.
PRODUCTS Set-top Boxes and CE Products Residential gateways Optical network terminals (ONTs) SmartTV’s Home Network Adapters Ethernet over Coax Game Consoles Home Appliances Smart Grid
TangoTec Ltd. | 14 HaMelacha Street, Netanya 42505, Israel | Tel: +972 4 853 0150
| Site: www.tangotec.com
Features & Specifications subject to change without notice. Copyright © 2013 TangoTec Ltd. All Rights Reserved. Rev.1.2
