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EQCO62T20.3-TRAY Datasheet(PDF) 4 Page - Microchip Technology |
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EQCO62T20.3-TRAY Datasheet(HTML) 4 Page - Microchip Technology |
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4 / 32 page  EQCO62T20.3/EQCO31T20.3 DS60001301B-page 4 2011-2016 Microchip Technology Inc. 1.0 DEVICE OVERVIEW The EQCO62T/R20 single-coax chipset is designed to simultaneously transmit and receive signals along with power on a single 75Ω coax cable. In one direction, a downlink signal is transmitted. In the opposite direction, a lower-speed uplink is provided. The EQCO62T/R20 chipset consists of two chips. The EQCO62T20 is a high-speed line driver with an integrated low-speed receiver. The EQCO62R20 is a high-speed receiver with an integrated low-speed transmitter. Figure 1-1 illustrates a typical EQCO62T/R20 link setup. The downlink signal is transmitted with 600 mV trans- mit amplitude at the EQCO62T20 side. This signal is attenuated in the coax and recovered by an equalizer integrated in the EQCO62R20. The low-speed uplink is transmitted with a lower amplitude of 130 mV to limit the crosstalk with the downlink channel. The downlink channel is intended for 8B/10B NRZ coded data with bitrates from 1.25 Gbps up to 6.25 Gbps. The low-speed uplink operates at a bit rate of 21 Mbps, and has a single-ended LVTLL input and output. In addition to the downlink channel and the low-speed uplink, the system allows power transmission over the coax by using ferrite beads and external inductors. These external inductors give the communication channel a high-pass characteristic. The uplink receiver inside the EQCO62T20 chip recovers the signal lost by this high-pass filter. Appropriate inductors need to be selected for correct operation of the link. Correct operation is only guaranteed with the inductor combination used in Figure 2-1, even though other components might be suited. The EQCO62T/R20 chipset is compatible with the CoaXPress v1.1 camera standard. FIGURE 1-1: TYPICAL EQCO62T/R20 LINK SETUP Up to 212 meters 75Ω Coax High Definition Camera EQCO 62T20 Frame Store + Camera Control Up to 6.25 Gbps downlink 21 Mbps uplink Up to 900 mA DC Up to 900 mA DC EQCO 62R20 21 Mbps uplink Up to 6.25 Gbps downlink |
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