参数资料
型号: DS2152L+
厂商: Maxim Integrated Products
文件页数: 30/97页
文件大小: 0K
描述: IC TXRX T1 1CHIP ENHNCD 100-LQFP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 90
功能: 单芯片收发器
接口: T1
电路数: 1
电源电压: 4.75 V ~ 5.25 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: 管件
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
产品目录页面: 1429 (CN2011-ZH PDF)
DS2152
36 of 97
Table 5-2. Alarm Criteria
ALARM
SET CRITERIA
CLEAR CRITERIA
Blue Alarm (AIS)
(See note 1 below)
When over a 3ms window, five or
less 0s are received
When over a 3ms window, six or
more 0s are received
Yellow Alarm (RAI)
1. D4 bit 2 mode(RCR2.2 = 0)
2. D4 12th F-bit mode
(RCR2.2=1; this mode is also
referred to as the "Japanese
Yellow Alarm"
3. ESF mode
When bit 2 of 256 consecutive
channels is set to 0 for at least 254
occurrences
When the 12th framing bit is set to
1 for two consecutive occurrences
When 16 consecutive patterns of
00FF appear in the FDL
When bit 2 of 256 consecutive
channels is set to 0 for less than 254
occurrences
When the 12th framing bit is set to 0
for two consecutive occurrences
When 14 or less patterns of 00FF
hex out of 16 possible appear in the
FDL
Red Alarm (LRCL)
(This alarm is also referred to as
Loss Of Signal)
When 192 consecutive 0s are
received
When 14 or more 1s out of 112
possible bit positions are received
starting with the first one received
Note 1: The definition of Blue Alarm (or Alarm Indication Signal) is an unframed all 1s signal. Blue alarm detectors should be able to
operate properly in the presence of a 10-3 error rate and they should not falsely trigger on a framed all 1s signal. The blue alarm criteria in
the DS2152 have been set to achieve this performance. It is recommended that the RBL bit be qualified with the RLOS bit.
Note 2: ANSI specifications use a different nomenclature than the DS2152 does; the following terms are equivalent:
RBL = AIS
LRCL = LOS
RLOS = LOF
RYEL = RAI
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