参数资料
型号: IDT82P20416DBFG
厂商: IDT, Integrated Device Technology Inc
文件页数: 58/121页
文件大小: 0K
描述: IC LIU T1/E1/J1 16CH SH 484BGA
标准包装: 84
功能: 线路接口单元(LIU)
接口: E1,J1,T1
电路数: 16
电源电压: 1.8V, 3.3V
功率(瓦特): 3.10W
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 484-LFBGA
供应商设备封装: 484-CABGA(19x19)
包装: 托盘
包括: AIS 警报检测器和发生器,回送功能,PRBS 发生器 / 检测器,远程检测器和发生器
IDT82P20416
16-CHANNEL SHORT HAUL T1/E1/J1 LINE INTERFACE UNIT
Functional Description
41
December 17, 2009
Figure-23 Automatic Error Counter Updating
3.5.6.2 Manual Error Counter Updating
When the CNT_MD bit (b1, ERR,...) is ‘0’, the Error Counter is
updated manually.
When there is a transition from ‘0’ to ‘1’ on the CNT_STOP bit (b0,
ERR,...), the Error Counter transfers the accumulated error numbers to
the ERRCH and ERRCL registers and the Error Counter will be cleared
to start a new round counting. The ERRCH and ERRCL registers should
be read in the next round of error counting, otherwise they will be over-
written.
When the ERRCH and ERRCL registers are all ‘1’s and there is still
error to be accumulated, the registers will be overflowed. The overflow is
indicated by the CNTOV_IS bit (b0, INTS2,...) and will induce an inter-
rupt reported by INT if not masked by the CNTOV_IM (b0, INTM2,...).
The process of manual Error Counter updating is illustrated in
Figure-24 Manual Error Counter Updating
Read the ERRCH & ERRCL
registers in the next second
TMOV_IS is cleared after a '1' is
written to it
Data in the Error Counter transfers
to the ERRCH & ERRCL registers
The Error Counter is cleared
One second expired?
(TMOV_IS = 1 ?)
Counting
Automatic Error Counter Updating
(CNT_MD = 1)
No
Yes
repeat the
same process
in the next
second
Read the ERRCH & ERRCL
registers in the next round
Data in the Error Counter transfers
to the ERRCH & ERRCL registers
The Error Counter is cleared
A transition from '0' to
'1' on CNT_STOP ?
Counting
Manual Error Counter Updating
(CNT_MD = 0)
No
Yes
repeat the
same
process in
the next
round
(CNT_STOP
must be
cleared
before the
next round)
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IDT82P20416DBFGBLANK 制造商:IDT 制造商全称:Integrated Device Technology 功能描述:16-Channel Short Haul T1/E1/J1 Line Interface Unit
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IDT82P20516BFGBLANK 制造商:IDT 制造商全称:Integrated Device Technology 功能描述:16-Channel Short Haul E1 Line Interface Unit