參數(shù)資料
型號: XRT75R12D
廠商: Exar Corporation
英文描述: TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
中文描述: 第十二章通道E3/DS3/STS-1線路接口單元與SONET DESYNCHRONIZER
文件頁數(shù): 94/131頁
文件大?。?/td> 717K
代理商: XRT75R12D
XRT75R12D
REV. P1.0.1
TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
PRELIMINARY
89
Since the TOH bytes occupy the first three byte columns of each STS-1 frame, and since each STS-1 frame
consists of nine (9) rows, then we can state that the TOH (within each STS-1 frame) consists of 3 byte columns
x 9 rows = 27 bytes. The byte format of the TOH is presented below in Figure 40.
F
IGURE
39. A S
IMPLE
I
LLUSTRATION
OF
THE
STS-1 F
RAME
S
TRUCTURE
WITH
THE
TOH
AND
THE
E
NVELOPE
C
APACITY
B
YTES
D
ESIGNATED
TOH
Envelope Capacity
87 Bytes
3 Bytes
90 Bytes
9 Row
相關(guān)PDF資料
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XRT75R12D_06 制造商:EXAR 制造商全稱:EXAR 功能描述:TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET
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