參數(shù)資料
型號: TMUX03155
英文描述: TMUX03155 STS-3/STM-1 (AU-4) Multiplexer/Demultiplexer
中文描述: TMUX03155 STS-3/STM-1(非盟- 4)復(fù)用器/解復(fù)用器
文件頁數(shù): 40/120頁
文件大小: 1542K
代理商: TMUX03155
40
Agere Systems Inc.
Data Sheet
April 2001
TMUX03155 STS-3/STM-1 (AU-4) Multiplexer/Demultiplexer
Maintenance Functions
(continued)
Receive Functions
(continued)
APS Babbling Monitor
The device will monitor the APS bytes (K1[7:0], K2[7:3]) in the receive direction and report to the control interface
(
RAPSBABLEE
,
RAPSBABLEM, 0x0C, 0x15
) when the K1 bytes are inconsistent. Inconsistent APS bytes are
defined as
CNTDAPSFRAME[3:0]
,
0x5C
(Default = 12)
successive frames, starting with the last frame containing
previously consistent code, where no
CNTDAPS[3:0], 0x5B (Default = 3)
consecutive frames contain identical
APS bytes.
Line AIS (AIS-L) Monitoring
The device will monitor line AIS on the receive input (
RLAISMON, 0x1D
). Line AIS will be detected after
CNTDK2[3:0], 0x5B
consecutive occurrences of the AIS-L pattern (xxxxx111) in the K2 overhead byte. Any
changes to this byte will be reported to the control system (
RLAISMOND
,
RLAISMONM, 0x0C, 0x15
).
Line Remote Defect Indication (RDI-L) Monitoring
The device will monitor an RDI-L condition on the receive input (
RLRDIMON, 0x1D
). A Line RDI condition will be
detected after
CNTDK2[3:0]
consecutive occurrences of the Line RDI pattern (xxxxx110) in the K2 overhead byte.
Any changes to this byte will be reported to the control system (
RLRDIMOND
,
RLRDIMONM, 0x0C, 0x15
).
K2 Byte Monitoring
The device will monitor the K2 byte (3 LSBs only) on the input side of the receive direction (
RK2MON[2:0], 0x23
).
After
CNTDK2[3:0], 0x5B
consecutive consistent occurrences of new K2 bits, the device will notify the control sys-
tem (
RK2MOND
,
RK2MONM, 0x0B, 0x14
).
Sync Status (S1) Byte Monitoring
The device will monitor the sync trace byte (
RS1MON[7:0], 0x25
) on the receive input. A new sync trace value will
be detected after
CNTDS1[3:0], 0x5C
consecutive consistent occurrences of a new pattern in the overhead bytes.
Any changes to this byte will be reported to the control system (
RS1MOND, RS1MONM, 0x0C, 0x15
).
Section FEBE (M1) Monitoring
The device will monitor a Section FEBE condition (M1) on the receive input. The device will allow access to the
Section FEBE errored bit/block (one block is equal to one frame) count (
FEBEBITBLOCKCNT, 0x34
,
RSFEBECNT[17:0], Page 1 - 0x34, 0xA4, 0xA6
). This counter will update when
LATCH_CNT
transitions from a
logic 0 to a logic 1.
AU-4 NPI (Null Pointer Indication) Monitoring
The device will monitor the three NPI values in the incoming STM-1(AU-4) signal. When five consecutive mis-
matches occur (any one of the three NPI values are in error) separated in time by 125 μs, the device will declare an
NPI mismatch condition. An NPI match condition is declared when two consecutive matches occur (all three NPI
values match), separated in time by 125 μs. The delta, mask, and state bits are
RHSNPIMISD
,
RHSNPIMISM
,
RHSNPIMIS, 0x0D, 0x16, 0x1D
,
respectively.
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