IP2022 User’s Manual—Register Quick Reference www.ubicom.com 419 C.3.12   SxRCNT Register C.3.13   SxTCFG Register 7 6 5 4 0 Reserved   RxCRSCTRL1:0 RXACNT4:0 Name                                                                            Description
RxCRSCTRL1:0    Carrier sense status and interrupt control 0x =   No interrupt. Software can poll the RXXCRS bit in the SxINTF register for carrier status. 10 =   Intterupt on carrier detection
11 =   Interrupt on loss of carrier RXACNT4:0 Receive shift count, actual number of bits received (read-
only) 7 6 5 4 0 SEREN   Reserved  TPOREV TXSCNT4:0 Name Description SEREN SERDES enable bit 0 =   SERDES disabled
1 =   SERDES enabled