Rainbow Electronics DS3170 - Manual (Page 162)

DS3170 DS3/E3 Single-Chip Transceiver
162 of 233
Bits 3 to 1: Receive Packet Status (RPS[2:0]) – These three bits indicate the status of the received packet and
packet data.
000 = packet middle
001 = packet start.
010 = reserved
011 = reserved
100 = packet end: good packet
101 = packet end: FCS errored packet.
110 = packet end: invalid packet (a noninteger number of bytes).
111 = packet end: aborted packet.
Bit 0: Receive FIFO Data Valid (RFDV) – When 0, the Receive FIFO data (RFD[7:0]) is invalid (the Receive FIFO
is empty). When 1, the Receive FIFO data (RFD[7:0]) is valid.