
DS21Q58 E1 Quad Transceiver
20 of 74
Register Name:
CCR1
Register Description:
Common Control Register 1
Register Address:
12 Hex
Bit #
7
6
5
4
3
2
1
0
Name
FLB
THDB3
TIBE
TCRC4
RSMS
RHDB3
PCLMS
RCRC4
NAME
BIT
FUNCTION
FLB
7
Framer Loopback. See Section
8.2 for details.
0 = loopback disabled
1 = loopback enabled
THDB3
6
Transmit HDB3 Enable
0 = HDB3 disabled
1 = HDB3 enabled
TIBE
5
Transmit Insert Bit Error. A 0-to-1 transition causes a single bit error to be
inserted in the transmit path.
TCRC4
4
Transmit CRC4 Enable
0 = CRC4 disabled
1 = CRC4 enabled
RSMS
3
Receive Signaling Mode Select
0 = CAS signaling mode. Receiver searches for the CAS MF alignment
signal.
1 = CCS signaling mode. Receiver does not search for the CAS MF
alignment signal.
RHDB3
2
Receive HDB3 Enable
0 = HDB3 disabled
1 = HDB3 enabled
PCLMS
1
Per-Channel Loopback Mode Select. See Section
17 for details.
0 = remote per-channel loopback
1 = local per-channel loopback
RCRC4
0
Receive CRC4 Enable
0 = CRC4 disabled
1 = CRC4 enabled