Peripherals—IP2022 User’s Manual 268 www.ubicom.com In 10Base-T mode, there are two analog inputs: Rx+ and Rx-. The
mapping of these signals to port pins is shown in Table 4-5. Figure  4-7  shows the  clock/data separation  and EOP  detection
logic of a SERDES unit. In USB mode, the SxRXD input carries
the data received from an external transceiver. The SxRXP and
SxRXM pins correspond to the differential inputs of the USB bus.
Providing both inputs allows sensing of an End-of-Packet (EOP)
condition. The SxRXD input is also used for interfaces with single-
ended input (i.e. GPSI, SPI, and UART modes), in which case the
clock/data separation circuit is bypassed. For 10Base-T Ethernet,
a differential line receiver is provided. Table 4-5  SERDES Analog Port Pin Usage SERDES1 Signal Port Pin SERDES2 Signal Port Pin Description S1Rx+ RG5 S2Rx+ RG7 Plus-side differential input S1Rx- RG4 S2Rx- RG6 Minus-side differential input