参数资料
型号: DS2154LNA2+
厂商: Maxim Integrated Products
文件页数: 51/124页
文件大小: 0K
描述: IC TXRX E1 5V 100-LQFP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 90
类型: 收发器
驱动器/接收器数: 1/1
规程: E1
电源电压: 4.75 V ~ 5.25 V
安装类型: 表面贴装
封装/外壳: 100-LQFP
供应商设备封装: 100-LQFP(14x14)
包装: 托盘
DS21354/DS21554 3.3V/5V E1 Single-Chip Transceivers
32 of 124
5.2.
Synchronization And Resynchronization
Once synchronization is accomplished there are certain criteria that can cause a resynchronization. These
criteria are detailed in Table 5-2. Also see Figure 18-14 for a flow chart of the synchronization process.
Table 5-2. SYNC/RESYNC Criteria
FRAME OR
MULTIFRAME
LEVEL
SYNC CRITERIA
RESYNC CRITERIA
ITU SPEC.
FAS
FAS present in frame N
and N + 2, and FAS not
present in frame N + 1
Three consecutive incorrect FAS
received
Alternate (RCR1.2=1) the above
criteria is met or three
consecutive incorrect bit 2 of
non–FAS received
G.706
4.1.1
4.1.2
CRC4
Two valid MF alignment
words found within 8 ms
915 or more CRC4 codewords
out of 1000 received in error
G.706
4.2 and 4.3.2
CAS
Valid MF alignment word
found and previous time
slot 16 contains code other
than all zeros
Two consecutive MF alignment
words received in error
G.732 5.2
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