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| 型號： | TNET3001 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | SONET STS-1 Overhead Terminator(SONET STS-1附加終端) |
| 中文描述： | SONET的STS - 1的開銷終結者（SONET的STS - 1的附加終端） |
| 文件頁數(shù)： | 34/49頁 |
| 文件大小： | 1090K |
| 代理商： | TNET3001 |
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TNETS3001
SONET STS-1 OVERHEAD TERMINATOR
SDNS007B – OCTOBER 1993 – REVISED JUNE 1995
34
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION
status register 2 (see Notes 25, 26, 27, and 28)
1F0, 1F1,
1F4
BIT
7
SYMBOL
TLOC
NAME
Transmit loss of clock
200 ns of no transitions in the clock TTCI
BIT
SYMBOL
NAME
Any transition of the clock TTCI
1F0, 1F1,
1F4
6
TNPTR
Transmit new pointer
A new-pointer value due to new-data flag
or three consecutive frames of different
pointer values
1F0, 1F1,
1F4
5
TPAIS
Transmit path AIS
Three consecutive frames of all ones in
H1 and H2 bytes
NDF with valid pointer or three
successive frames with valid
pointer
1F0, 1F1,
1F4
4
TLAIS
Transmit line AIS
Five consecutive frames of 111 in bits
6, 7, 8 of the K2 byte
Five consecutive frames of
patterns other than 111 in bits 6,
7, 8 of the K2 byte
1F0, 1F1,
1F4
3
TLOP
Transmit loss of pointer
Eight consecutive frames of invalid
pointer or NDF
Three consecutive frames of valid
pointer
1F0, 1F1,
1F4
2
TLOF
Transmit loss of frame
Eight consecutive frames of out-of-frame
condition
Eight consecutive frames of not
out-of-frame condition
1F0, 1F1,
1F4
1
TOOF
Transmit out of frame
Failure to acquire valid framing pattern
for four consecutive frames
Valid framing pattern exactly
6480 bits apart
1F0, 1F1,
1F4
NOTES: 25. The address 1F0 contains latched values of these status bits, which reset on read.
26. The address 1F1 contains latched values of these status bits, but do not reset on read. Write one to an individual bit to reset. Write
back read value to reset the entire register.
27. The address 1F4 contains unlatched values of these status bits.
28. None of these alarms, except TLOS, work in the SPE-only mode.
0
TLOS
Transmit loss of signal
6480 bits of all zeros or all ones
Any transition in TTDI
P
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