PM6341 E1XC
DATA SHEET
PMC-910419
ISSUE 8
E1 FRAMER/TRANSCEIVER
TPSC Internal Registers 20-3FH: Data Control byte
Bit
Type
Function
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
SUBS
DS[0]
DS[1]
SIGSRC
A'
B'
C'
D'
SUBS, DS[1], and DS[0]:
The SUBS, DS[1], and DS[0] bits select one of the following data
manipulations to be performed on the timeslot:
SUBS
DS[0]
DS[1]
Function
0
0
0
0
0
1
OFF - no change to PCM timeslot data
ADI - data inversion on timeslot bits
1,3,5,7
0
1
0
ADI - data inversion on timeslot bits
2,4,6,8
0
1
1
0
1
INV - data inversion on all timeslot bits
X
Data substitution on - IDLE code
replaces PCM timeslot data
1
1
1
1
0
1
Data substitution on - A-Law digital
*
milliwatt pattern replaces TPCM
timeslot data.
Data substitution on - µ-Law digital
*
milliwatt pattern replaces TPCM
timeslot data.
*
The A-Law digital milliwatt pattern used is that defined in Recommendation
G.711 for A-law:
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
143
PMC [ PMC-SIERRA, INC ]
