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): 30/120頁
文件大?。?/td> 1542K
代理商: TMUX03155
30
Agere Systems Inc.
Data Sheet
April 2001
TMUX03155 STS-3/STM-1 (AU-4) Multiplexer/Demultiplexer
Maintenance Functions
(continued)
Common Maintenance and Control Functions
(continued)
Bit or Block Count
The device allows all counters, except the pseudorandom error counter, to either count the actual number of bit
errors or the number of blocks (a block equals one frame) that contain an error (
BITBLOCKCNT, 0x34
).
The section and path FEBE counters count the actual number of bit errors or the number of blocks that contain an
error (
FEBEBITBLOCKCNT, 0x34
).
Transmit Functions
The transmit section addresses maintenance functions that are unique to the transmit direction.
Parity (B1, B2, B3)
The device will perform a bit interleaved BIP-8 parity (B1) calculation and will write these bits into the B1 section
overhead byte. The device will perform a bit interleaved BIP-24 parity (B2) calculation and will write these bits into
the B2 line overhead byte. The device will perform a bit interleaved BIP-8 parity (B3) calculation and will write these
bits into the B3 path overhead byte (AU-4 mode only).
The device can perform a B1 (
THSB1ERRINS, 0x4C
), B2 (
THSB2ERRINS[3—1], 0x4C
), and B3
(
THSB3ERRINS, 0x4C
) parity byte inversion via microprocessor control.
A1, A2 Error Enable
The device will allow, under software control, from 1 to 32 continuous frames to have errored A1A2 patterns in the
outgoing frame (
TA1A2ERRINS[4:0], 0x4D and
TA1A2ERREN, 0x04
).
Section Trace/Growth Byte Insert (J0/Z0)
The device inserts the data written into
TJ0DINS[7:0], 0x3F,
TZ02DINS[7:0], 0x40,
and
TZ03DINS[7:0], 0x41
into
the outgoing J0/Z0 bytes.
Fault Location Insert (F1)
Via microprocessor control of
TF1INS, 0x3E
and
TF1DINS[7:0], 0x42
, data information may be inserted into the
outgoing F1 byte. Direct microprocessor insert has higher priority than the TOAC insert control bit
(
TTOAC_F1[1:0], 0x51
).
Sync Status Byte Insert (S1)
Via microprocessor control of
TS1INS, 0x3E
and
TS1DINS[7:0]0x45
, data information may be inserted into the
outgoing S1 byte. Direct microprocessor insert has higher priority than the TOAC insert control bit
(
TTOAC_Z1[1:0], 0x51
).
Automatic Protection Switch (APS) Insertion (K1[7:0], K2[7:3])
The device writes the K1 and K2 bytes into the transmit K1 and K2 overhead bytes (
TAPSINS[12:0], 0x43,
0x44
). The K1 and K2[7:3] bits will only change when both values are valid. The
TAPSINS[4:0], 0x44
byte is the
trigger for updating the APS bytes in the outgoing frame.
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