
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
439
Indirect Register 05H: SHPI Pointer Interpreter Status
Bit
Type
Function
Default
Bit 15
Unused
X
Bit 14
Unused
X
Bit 13
Unused
X
Bit 12
Unused
X
Bit 11
Unused
X
Bit 10
Unused
X
Bit 9
Unused
X
Bit 8
Unused
X
Bit 7
Unused
X
Bit 6
R
NDF
X
Bit 5
R
ILLPTR
X
Bit 4
R
INVNDF
X
Bit 3
R
DISCOPA
X
Bit 2
R
CONCAT
X
Bit 1
R
ILLJREQ
X
Bit 0
Unused
X
The Pointer Interpreter Status Indirect Register is provided at SHPI r/w indirect address 02H.
Note: The Pointer Interpreter Status bits are don’t care for slave time slots, except for the
CONCAT bit, which is defined for slave timeslots. The other bits may be set high for slave
timeslots, and should be ignored.
ILLJREQ
The illegal pointer justification request (ILLJREQ) signal is set high when a positive and/or
negative pointer adjustment is received within three frames of a pointer justification event
(inc_ind, dec_ind) or an NDF triggered active offset adjustment (NDF_enable). ILLJREQ
is only declared when JUST3DIS is logic low.
CONCAT
The CONCAT bit is set high if the H1 and H2 pointer bytes received match the
concatenation indication (one of the five NDF_enable patterns in the NDF field, don't care
in the size field, and all-ones in the pointer offset field).
DISCOPA
The discontinuous change of pointer alignment (DISCOPA) signal is set high when there is
a pointer adjustment due to receiving a pointer repeated three times.