参数资料
型号: DS3120
厂商: Maxim Integrated Products
文件页数: 98/133页
文件大小: 0K
描述: IC FRAMER T1 28-CHAN 0-70C DEG
标准包装: 1
控制器类型: T1 调帧器
接口: 并行/串行
电源电压: 2.97 V ~ 3.63 V
电流 - 电源: 300mA
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 316-BGA
包装: 管件
DS3112
67 of 133
Table 6-1. T2 Alarm Criteria
ALARM/
CONDITION
DEFINITION
SET CRITERIA
CLEAR CRITERIA
AIS
Alarm Indication Signal
Unframed all ones
Eight or fewer zeros in four
consecutive M frames (4704
bits)
Nine or more zeros in four
consecutive M frames
(4704 bits)
LOF
Loss Of Frame
Too many F bits or M bits in
error
Two or more F bits in error
out of five, or two or more M
bits in error out of four
Synchronization occurs
RAI
Remote Alarm Indication
Inactive: X = 1
Active: X = 0
X = 0 for four consecutive M
frames (4704 bits)
X = 1 for four consecutive
M frames (4704 bits)
Table 6-2. E2 Alarm Criteria
ALARM/
CONDITION
DEFINITION
SET CRITERIA
CLEAR CRITERIA
AIS
Alarm Indication Signal
Unframed all ones
Four or fewer zeros in each of
two consecutive 848-bit
frames
Five or more zeros in each
of two consecutive 848-bit
frames
LOF
Loss Of Frame
Too many FAS errors
Four consecutive bad FAS
Three consecutive good
FAS
RAI
Remote Alarm Indication
Inactive: Bit 11 of the frame = 0
Active: Bit 11 of the frame = 1
Bit 11 = 1 for four consecutive
frames (3392 bits)
Bit 11 = 0 for four
consecutive frames (3392
bits)
Table 6-3. G.747 Alarm Criteria
ALARM/
CONDITION
DEFINITION
SET CRITERIA
CLEAR CRITERIA
AIS
Alarm Indication Signal
Unframed all ones
Four or fewer zeros in each of
two consecutive 840-bit
frames
Five or more zeros in each
of two consecutive 840-bit
frames
LOF
Loss Of Frame
Too many FAS errors
Four consecutive bad FAS
Three consecutive good
FAS
RAI
Remote Alarm Indication
Inactive: Bit 1 of Set 2 = 0
Active: Bit 1 of Set 2 = 1
Bit 1 of Set 2 = 1 for four
consecutive frames (3360
bits)
Bit 1 of Set 2 = 0 for four
consecutive frames (3360
bits)
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