参数资料
型号: DS21352LB
厂商: Maxim Integrated Products
文件页数: 87/137页
文件大小: 0K
描述: IC TXRX 1-CHIP T1 3.3V 100-LQFP
产品培训模块: Lead (SnPb) Finish for COTS
产品变化通告: Product Discontinuation 20/Feb/2012
标准包装: 90
功能: 单芯片收发器
接口: HDLC,T1
电路数: 1
电源电压: 3.14 V ~ 3.47 V
电流 - 电源: 75mA
工作温度: 0°C ~ 70°C
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
包括: DSX-1 和 CSU 线路补偿发生器,HDLC 控制器,带内回路代码发生器和检测器
DS21352/DS21552
53 of 137
8.3 Multiframes Out Of Sync Count Register (MOSCR)
Normally the MOSCR is used to count the number of multiframes that the receive synchronizer is out of
sync (RCR2.0=1). This number is useful in ESF applications needing to measure the parameters Loss Of
Frame Count (LOFC) and ESF Error Events as described in AT&T publication TR54016. When the
MOSCR is operated in this mode, it is not disabled during receive loss of synchronization (RLOS=1)
conditions. The MOSCR has alternate operating mode whereby it will count either errors in the Ft
framing pattern (in the D4 mode) or errors in the FPS framing pattern (in the ESF mode). When the
MOSCR is operated in this mode, it is disabled during receive loss of synchronization (RLOS = 1)
conditions. See Table 8-3 for a detailed description of what the MOSCR is capable of counting.
MOSCR1: MULTIFRAMES OUT OF SYNC COUNT REGISTER 1 (Address = 25
Hex) see note 1
MOSCR2: MULTIFRAMES OUT OF SYNC COUNT REGISTER 2 (Address = 27
Hex)
(MSB)
(LSB)
MOS/FB1
1
MOS/FB1
0
MOS/FB9
MOS/FB8
(note 1)
MOSCR1
CRC/FB7
CRC/FB6
CRC/FB5
CRC/FB4
CRC/FB3
CRC/FB2
CRC/FB1
CRC/FB0
MOSCR2
SYMBOL
POSITION
NAME AND DESCRIPTION
MOS/FB11
MOSCR1.7
MSB of the 12–Bit Multiframes Out of Sync or F–Bit Error Count (note #2)
MOS/FB0
MOSCR2.0
LSB of the 12–Bit Multiframes Out of Sync or F–Bit Error Count (note #2)
NOTES:
1. The lower nibble of the counter at address 25 is used by the Path Code Violation Count Register
2. MOSCR counts either errors in framing bit position (RCR2.0=0) or the number of multiframes out of sync (RCR2.0=1)
Table 8-3 MULTIFRAMES OUT OF SYNC COUNTING ARRANGEMENTS
FRAMING MODE
(CCR2.3)
COUNT MOS OR F–BIT
ERRORS
(RCR2.0)
WHAT IS COUNTED
IN THE MOSCRs
D4
MOS
number of multiframes out of sync
D4
F–Bit
errors in the Ft pattern
ESF
MOS
number of multiframes out of sync
ESF
F–Bit
errors in the FPS pattern
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