参数资料
型号: DS21FF44
厂商: Maxim Integrated Products
文件页数: 60/117页
文件大小: 0K
描述: IC FRAMER E1 4X4 16CH 300-BGA
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 40
控制器类型: E1 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: 300-BBGA
供应商设备封装: 300-PBGA(27x27)
包装: 管件
DS21FT44/DS21FF44
47 of 117
Table 11-1. ALARM CRITERIA
ALARM
SET CRITERIA
CLEAR CRITERIA
ITU SPEC.
RSA1
(receive signaling all 1’s)
Over 16 consecutive
frames (one full MF)
timeslot 16 contains less
than three 0’s
Over 16 consecutive frames
(one full MF) timeslot 16
contains three or more 0’s
G.732
4.2
RSA0
(receive signaling all 0’s)
Over 16 consecutive
frames (one full MF)
timeslot 16 contains all
0’s
Over 16 consecutive frames
(one full MF) timeslot 16
contains at least a single 1
G.732
5.2
RDMA
(receive distant
multiframe alarm)
Bit 6 in timeslot 16 of
frame 0 set to 1 for two
consecutive MF
Bit 6 in timeslot 16 of frame 0
set to 0 for two consecutive
MF
O.162
2.1.5
RUA1
(receive unframed all 1’s)
Less than three 0’s in two
frames (512 bits)
More than two 0’s in two
frames (512 bits)
O.162
1.6.1.2
RRA
(receive remote alarm)
Bit 3 of nonalign frame
set to one for three
consecutive occasions
Bit 3 of nonalign frame set to 0
for three consecutive occasions
O.162
2.1.4
RCL
(receive carrier loss)
255 (or 2048) consecutive
0’s received
In 255 bit times, at least 32 1’s
are received
G.775/G.962
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