ZHCSDW5A June 2015 – July 2015 ONET1130EC
PRODUCTION DATA.
For optimum performance, use 50-Ω transmission lines (100-Ω differential) for connecting the high speed inputs and outputs. The length of transmission lines should be kept as short as possible to reduce loss and pattern-dependent jitter. It is recommended to maximize the separation of the TXOUT+ and TXOUT- transmission lines from the RXIN+ and RXIN- transmission lines to minimize transmitter to receiver crosstalk.
If the single-ended mode of operation is being used (TXMODE = 1) then it is recommended to terminate the unused output with a 50-Ω resistor to VCC. Figure 73 shows a typical layout for the high speed inputs and outputs.