SLLSEJ2G July 2015 – March 2020 SN65DP159 , SN75DP159
PRODUCTION DATA.
Equalizers are used to clean up inter-symbol interference (ISI) jitter or loss from the bandwidth-limited board traces or cables. The SNx5DP159 device supports both fixed receiver equalizer (redriver and retimer mode) and adaptive receive equalizer (retimer mode) by setting the EQ_SEL/A0 pin or through I2C using reg0Ah[5]. When the EQ_SEL/A0 pin is high, the EQ gain is fixed to 14-dB. The EQ gain will be 7.5-dB if the EQ_SEL/A0 pin is set low. The SNx5DP159 device operates in adaptive equalizer mode when EQ_SEL/A0 left floating. Using adaptive equalization the gain will be automatically adjusted based on the data rate to compensate for variable trace or cable loss. Using the local I2C[4] control, reg0Dh[5:1], the fixed EQ gain can be selected for both data and clock.