STANDARD PRODUCT
PM4351 COMET
DATA SHEET
PMC-1970624
ISSUE 10
COMBINED E1/T1 TRANSCEIVER
Register 033H: BRIF Time Slot Offset
Bit
Type
Function
Default
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Unused
X
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
TSOFF[6]
TSOFF[5]
TSOFF[4]
TSOFF[3]
TSOFF[2]
TSOFF[1]
TSOFF[0]
TSOFF[6:0]:
The time slot offset (TSOFF[6:0]) bits give a binary representation of the fixed
byte offset between the backplane receive frame pulse (BRFP) and the start
of the next frame on the backplane receive data signal (BRPCM). The seven
bits can give an offset from 0 - 127 bytes. With a data rate of 2.048 Mbit/s,
every byte on BRPCM is driven. With a data rate of 4.096 Mbit/s, every
second byte on BRPCM is driven. With a data rate of 8.192 Mbit/s, every
fourth byte on BRPCM is driven.
PROPRIETARY AND CONFIDENTIAL
146
PMC [ PMC-SIERRA, INC ]
