Datasheet

DS21352/DS21552

39 of 137

CCR4: COMMON CONTROL REGISTER 4 (Address=11 Hex)

(MSB) (LSB)

RSRE RPCSI RFSA1 RFE RFF THSE TPCSI TIRFS

SYMBOL POSITION NAME AND DESCRIPTION

RSRE CCR4.7 Receive Side Signaling Re–Insertion Enable. See Section 10.2 for details.

0 = do not re–insert signaling bits into the data stream presented at the RSER pin

1 = reinsert the signaling bits into data stream presented at the RSER pin

RPCSI CCR4.6 Receive Per–Channel Signaling Insert. See Section 10.2 for more details.

0 = do not use RCHBLK to determine which channels should have signaling re–inserted

1 = use RCHBLK to determine which channels should have signaling re–inserted

RFSA1 CCR4.5 Receive Force Signaling All Ones. See Section 10.2 for more details.

0 = do not force extracted robbed–bit signaling bit positions to a one

1 = force extracted robbed–bit signaling bit positions to a one

RFE CCR4.4 Receive Freeze Enable. See Section 10.2 for details.

0 = no freezing of receive signaling data will occur

1 = allow freezing of receive signaling data at RSIG (and RSER if CCR4.7 = 1).

RFF CCR4.3 Receive Force Freeze. Freezes receive side signaling at RSIG (and RSER if

CCR4.7=1); will override Receive Freeze Enable (RFE). See Section 10.2 for details.

0 = do not force a freeze event

1 = force a freeze event

THSE CCR4.2 Transmit Hardware Signaling Insertion Enable. See Section 10.2 for details.

0 = do not insert signaling from the TSIG pin into the data stream presented at the

TSER pin

1 = insert signaling from the TSIG pin into data stream presented at the TSER pin

TPCSI CCR4.1 Transmit Per–Channel Signaling Insert. See Section 10.2 for details.

0 = do not use TCHBLK to determine which channels should have signaling inserted

from TSIG

1 = use TCHBLK to determine which channels should have signaling inserted from

TSIG

TIRFS CCR4.0 Transmit Idle Registers (TIR) Function Select. See Section 2.1 for timing details.

0 = TIRs define in which channels to insert idle code

1 = TIRs define in which channels to insert data from RSER (i.e., Per-Channel

Loopback function)