
PM5317 SPECTRA-9953 Telecom Standard Product Data Sheet
Release
Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2000741, Issue 5
421
Register 20E2H: THPP_R Payload Configuration (TPC)
Bit
Type
Function
Default
Bit 15
R/W
STS12CSL
0
Bit 14
R/W
STS12C
0
Bit 13
Unused
Bit 12
Unused
Bit 11
Unused
Bit 10
Unused
Bit 9
Unused
Bit 8
Unused
Bit 7
R/W
Unused
0
Bit 6
R/W
Unused
0
Bit 5
R/W
Unused
0
Bit 4
R/W
Unused
0
Bit 3
R/W
STS3C[4]
0
Bit 2
R/W
STS3C[3]
0
Bit 1
R/W
STS3C[2]
0
Bit 0
R/W
STS3C[1]
0
The Payload Configuration Register is provided at THPP_R Read/Write Address 02H.
STS3C[1]
The STS-3c (VC-4) payload configuration (STS3C[1]) bit selects the payload configuration.
When STS3C[1] is set to logic 1, the STS-1/STM-0 paths #1, #5 and #9 are part of a STS-
3c (VC-4) payload. When STS3C[1] is set to logic 0, the paths are STS-1 (VC-3) payloads.
The STS12C register bit has precedence over the STS3C[1] register bit.
STS3C[2]
The STS-3c (VC-4) payload configuration (STS3C[2]) bit selects the payload configuration.
When STS3C[2] is set to logic 1, the STS-1/STM-0 paths #2, #6 and #10 are part of a STS-
3c (VC-4) payload. When STS3C[2] is set to logic 0, the paths are STS-1 (VC-3) payloads.
The STS12C register bit has precedence over the STS3C[2] register bit.
STS3C[3]
The STS-3c (VC-4) payload configuration (STS3C[3]) bit selects the payload configuration.
When STS3C[3] is set to logic 1, the STS-1/STM-0 paths #3, #7 and #11 are part of a STS-
3c (VC-4) payload. When STS3C[3] is set to logic 0, the paths are STS-1 (VC-3) payloads.
The STS12C register bit has precedence over the STS3C[3] register bit.