PM4341AT1XC
DATA SHEET
PMC-900602
ISSUE 7
T1 FRAMER/TRANSCEIVER
RPSC Internal Registers 01-18H: PCM 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
INVERT
DTRKC
DMW
SIGNINV
Unused
Unused
Unused
Unused
INVERT:
When the INVERT bit is set to a logic 1, data output on the BRPCM pin is the
bit inverse of the received data for the duration of that channel.
SIGNINV:
When the SIGNINV bit is set to a logic 1, the most significant bit of the data
output on the BRPCM pin is inverse of the received data most significant bit
for that channel.
The INVERT and SIGNINV can be used to produce the following types of
inversions:
Table 22
- RPSC Inversion Options
INVERT
SIGNINV
Effect on PCM Channel Data
0
1
0
0
PCM Channel data is unchanged
All 8 bits of the received PCM channel data are
inverted
0
1
1
1
Only the MSB of the received PCM channel data is
inverted (SIGN bit inversion)
All bits EXCEPT the MSB of the received PCM
channel data is inverted (Magnitude inversion)
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
179
PMC [ PMC-SIERRA, INC ]
