PM5381-BI PMC-Sierra, Inc., PM5381-BI Datasheet - Page 305

• Manufacturer Part Number: PM5381-BI
• Description: ATM UNI, Single Channel ATM PHY Interface for 2488.32Mbps
• Manufacturer: PMC-Sierra, Inc.

Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-2000489, Issue 4
Register 0604H, 0624H, 0644H, 0664H: SVCA Negative Justification Interrupt Status
In the XCONNECT mode of operation of the S/UNI-2488, the NPJI[12:1] register bits are
defined as follows:
NPJI[12:1]
NPJI[1]
Bit
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
The negative pointer justification interrupt status (NPJI[12:1]) bits are event indicators for
STS-1/STM-0 paths #1 to #12. NPJI[12:1] are set to logic 1 to indicate a negative pointer
justification event in the outgoing data stream. These interrupt status bits are independent of
the interrupt enable bits. If WCIMODE is set to logic 1, only over-writing with a ‘1’ clears
this bit. If WCIMODE is set to logic 0, then a read of this register automatically clears this
bit.
In the normal mode of operation of the S/UNI-2488 only the first register address (0604H) is
used. The NPJI[12:2] register bits are unused in normal mode and the NPJI[1] register bit is
defined as follows:
The negative pointer justification interrupt status (NPJI[1]) bit indicates a negative pointer
adjustment in the STS-48c/STM-4-4c stream. NPJI[1] is set to logic 1 to indicate a negative
pointer justification event in the outgoing data stream. This interrupt status bit is independent
of the interrupt enable bit. If WCIMODE is set to logic 1, only over-writing with a ‘1’ clears
this bit. If WCIMODE is set to logic 0, then a read of this register automatically clears this
bit.
Type
R
R
R
R
R
R
R
R
R
R
R
R
Function
Unused
Unused
Unused
Unused
NPJI[12]
NPJI[11]
NPJI[10]
NPJI[9]
NPJI[8]
NPJI[7]
NPJI[6]
NPJI[5]
NPJI[4]
NPJI[3]
NPJI[2]
NPJI[1]
Default
X
X
X
X
0
0
0
0
0
0
0
0
0
0
0
0
S/UNI-2488 Telecom Standard Product Datasheet
Released
305