ZHCS810H January 2012 – February 2018 DS125DF410
PRODUCTION DATA.
Register 0x00, bit 2, and register 0x0a, bits 3:2
Bit 2 of channel register 0x00 are used to reset all the registers for the corresponding channel to their factory default settings. This bit is self-clearing. Writing this bit will clear any register changes you have made in the DS125DF410 since it was powered-up.
To reset just the CDR state machine without resetting the register values, which will re-initiate the lock and adaptation sequence for a particular channel, use channel register 0x0a. Set bit 3 of this register to enable the reset override, then set bit 2 to force the CDR state machine into reset. These bits can be set in the same operation. When bit 2 is subsequently cleared, the CDR state machine will resume normal operation. If a signal is present at the input to the selected channel, the DS125DF410 will attempt to lock to it and will adapt its CTLE and its DFE according to the currently configured adapt mode for the selected channel. The adapt mode is configured by channel register 0x31, bits 6:5.