参数资料
型号: DS26504LNB2+
厂商: Maxim Integrated Products
文件页数: 74/129页
文件大小: 0K
描述: IC T1/E1/J1 64KCC ELEMENT 64LQFP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 160
功能: BITS 元件
接口: 64KCC,E1,T1
电路数: 1
电源电压: 3.14 V ~ 3.47 V
电流 - 电源: 150mA
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 64-LQFP
供应商设备封装: 64-LQFP(10x10)
包装: 管件
包括: *
其它名称: 90-26504+NB2
DS26504 T1/E1/J1/64KCC BITS Element
49 of 129
9.2 E1 Information Registers
Register Name:
INFO2
Register Description:
Information Register 2
Register Address:
12h
Bit #
7
6
5
4
3
2
1
0
Name
CRCRC
FASRC
CASRC
Default
0
HW
Mode
X
Bit 0: CAS Resync Criterion Met Event (CASRC). Set when two consecutive CAS MF alignment words are received in
error.
Bit 1: FAS Resync Criterion Met Event (FASRC). Set when three consecutive FAS words are received in error.
Bit 2: CRC Resync Criterion Met Event (CRCRC). Set when 915/1000 codewords are received in error.
Bits 3 to 7: Unused
Register Name:
INFO3
Register Description:
Information Register 3 (Real Time)
Register Address:
1Ch
Bit #
7
6
5
4
3
2
1
0
Name
CSC5
CSC4
CSC3
CSC2
CSC0
FASSA
CASSA
CRC4SA
Default
0
HW
Mode
X
Bit 0: CRC4 MF Sync Active (CRC4SA). Set while the synchronizer is searching for the CRC4 MF alignment word.
Bit 1: CAS MF Sync Active (CASSA). Set while the synchronizer is searching for the CAS MF alignment word.
Bit 2: FAS Sync Active (FASSA). Set while the synchronizer is searching for alignment at the FAS level.
Bits 3 to 7: CRC4 Sync Counter Bits (CSC0, CSC2 to CSC5). The CRC4 sync counter increments each time the 8ms-CRC4
multiframe search times out. The counter is cleared when the framer has successfully obtained synchronization at the CRC4
level. The counter can also be cleared by disabling CRC4 mode. This counter is useful for determining the amount of time the
framer has been searching for synchronization at the CRC4 level. ITU G.706 suggests that if synchronization at the CRC4
level cannot be obtained within 400ms, then the search should be abandoned and proper action taken. The CRC4 sync counter
will roll over. CSC0 is the LSB of the 6-bit counter. (Note: The second LSB, CSC1, is not accessible. CSC1 is omitted to
allow resolution to >400ms using 5 bits.)
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