DS21352 datasheet(39/137 Pages) DALLAS

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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)

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