
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
425
Indirect Register 01H: THPP_R Source & Pointer Control Register (TSPCR)
Bit
Type
Function
Default
Bit 15
R/W
UNEQV
0
Bit 14
R/W
UNEQ
0
Bit 13
R/W
Unused
0
Bit 12
R/W
Unused
0
Bit 11
R/W
ENG1REC
1
Bit 10
R/W
ENH4MASK
0
Bit 9
R/W
PTBJ1
0
Bit 8
R/W
SRCZ5
0
Bit 7
R/W
SRCZ4
0
Bit 6
R/W
SRCZ3
0
Bit 5
R/W
SRCF2
0
Bit 4
R/W
SRCG1
0
Bit 3
R/W
SRCH4
0
Bit 2
R/W
SRCC2
0
Bit 1
R/W
SRCJ1
0
Bit 0
R/W
IBER
0
The THPP_R Control Indirect Register is provided at THPP_R r/w indirect address 01H.
IBER
When the IBER register bit is set to logic one, the G1 byte received on the Add bus pass-
through the THPP_R. When IBER is set to logic zero, the G1 byte is not pass-through and
can be modified by one of the THPP_R POH sources.
SRCJ1, SRCC2, SRCH4, SRCG1, SRCF2, SRCZ3, SRCZ4, SRCZ5
The SRCxx bits are used to determine the source of the path overhead bytes inserted by the
THPP_R For example, when a logic 1 is written to SRCJ1, the J1 byte inserted can be
found in the internal register TPTSLO.
PTBJ1
The PTBJ1 register bit is used to determine the origin of the path trace byte to be inserted in
by the THPP_R. When PTBJ1 is set high, the J1 byte source is the external path trace
buffer. When PTBJ1 is set to logic low, The J1 byte source is other than the path trace
buffer.