STANDARD PRODUCT
PM4351 COMET
DATA SHEET
PMC-1970624
ISSUE 10
COMBINED E1/T1 TRANSCEIVER
Register 053H: SIGX Change of Signaling State (COSS = 1)
Bit
Type
Function
Default
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
R
R
R
R
R
R
R
R
COSS[8]
COSS[7]
COSS[6]
COSS[5]
COSS[4]
COSS[3]
COSS[2]
COSS[1]
X
X
X
X
X
X
X
X
COSS[8:1]:
The COSS[8:1] bits will be set to logic 1 if a change of signaling state occurs
on the corresponding E1 timeslot or T1 channel. COSS[8:1] are cleared after
this register is read.
In E1 mode, COSS[1] through COSS[8] correspond to timeslots 1 through 8.
For the purposes of signaling extraction, the T1 channels are indexed 1
through 24.
SIGX Indirect Registers
The signaling and per-timeslot functions are allocated within the indirect registers
as follows:
Table 33
Addr
- SIGX Indirect Register Map
Register
10H
11H
12H
13H
14H
15H
Current Signaling Data Register for Ch 1 and 17
Current Signaling Data Register for TS1 and 17/Ch 2 and 18
Current Signaling Data Register for TS2 and 18/Ch 3 and 19
Current Signaling Data Register for TS3 and 19/Ch 4 and 20
Current Signaling Data Register for TS4 and 20/Ch 5 and 21
Current Signaling Data Register for TS5 and 21/Ch 6 and 22
PROPRIETARY AND CONFIDENTIAL
185
PMC [ PMC-SIERRA, INC ]
