JAJSF94F July 2015 – May 2018 SN65DP159 , SN75DP159
PRODUCTION DATA.
The SNx5DP159 device incorporates the swap function, which can set the input lanes in swap mode. The IN_D2 routes to the OUT_CLK position. The IN_D1 swaps with IN_D0. The swap function only changes the input pins; EQ setup follows new mapping. The SWAP/POL is pin 1 in the 48-pin RGZ package.For the RSB version, the user needs to control the register 0x09h bit 7 for SWAP enable. Lane swap is operational in both redriver and retimer mode.
NORMAL OPERATION | SWAP = L OR CSR 0x09h BIT 7 IS 1’b1 |
---|---|
IN_D2 → OUT_D2 | IN_D2 → OUT_CLK |
IN_D1 → OUT_D1 | IN_D1 → OUT_D0 |
IN_D0 → OUT_D0 | IN_D2 → OUT_D1 |
IN_CLK → OUT_CLK | IN_CLK → OUT_D2 |
The SNx5DP159 can also change the polarity of the input signals. When SWAP/POL is high, the n and p pins on each lane will swap.Use Register 0x9h bit 6 to swap polarity using I2C. Polarity swap only works for retimer mode. When the device is in automatic redriver to retimer mode this only works when device is in retimer stage. If set and data rate falls below 1.0-Gbps in this mode the polarity function will be lost.