XRT75R12D_07 Datasheet, PDF (65/133 Pages) Exar Corporation – TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET

XRT75R12D
REV. 1.0.3 TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
TABLE 22: APS/REDUNDANCY RECIEVE CONTROL REGISTER - CR136 (ADDRESS LOCATION = 0X88)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
Reserved Reserved RxON Ch 11 RxON Ch 10 RxON Ch 9 RxON Ch 8 RxON Ch 7 RxON Ch 6
R/W
R/W
R/W
R/W
R/W
R/W
BIT
NUMBER
NAME
7,6
Reserved
5
RxON Ch 11
4
RxON Ch 10
3
RxON Ch 9
2
RxON Ch 8
1
RxON Ch 7
0
RxON Ch 6
TYPE
DESCRIPTION
R/W Receive Section ON - Channel n
This READ/WRITE bit-field is used to turn on or turn off the Receiver associated with
Channel n on a per channel basis. If the user turns on the Receiver, then Channel n
will Receive DS3, E3 or STS-1 pulses on the line via the RTIP_n and RRING_ n input
pins.
Conversely, if the user turns off the Receiver Driver (for channel n), the RTIP_n and
RRING_n input pins will be in a high impedance state.
0 - Shuts off the Receive Driver associated with Channel n and puts the RTIP_n and
RRING_ n input pins in a high impedance state.
1 - Turns on the Receive Driver associated with Channel n.
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