JAJSKH5A April 2022 – May 2024 TUSB1142
PRODUCTION DATA
The TUSB1142 in limited redriver mode offers preshoot and de-emphasis controls for SSRX transmitter. The TUSB1142 offers four preshoot levels and four de-emphasis levels. These levels can be changed by modifying I2C registers.
SSRX transmitter equalization is controlled by TX_PRESHOOT and TX_DEEMPHASIS fields. When SSRX_LIMIT_ENABLE = 1 and TX_PRESHOOT_EN = 1, the TX_PRESHOOT field selects between four different preshoot levels. When SSRX_LIMIT_ENABLE = 1 and TX_DEEMPHASIS_EN = 1, the TX_DEEMPHASIS field selects between four different de-emphasis levels.