参数资料
型号: IDT82P2828BHG
厂商: IDT, Integrated Device Technology Inc
文件页数: 118/154页
文件大小: 0K
描述: IC LIU T1/J1/E1 28+1CH 640-PBGA
标准包装: 5
类型: 线路接口装置(LIU)
规程: E1
电源电压: 3.13 V ~ 3.47 V
安装类型: 表面贴装
封装/外壳: 640-BGA 裸露焊盘
供应商设备封装: 640-PBGA-EP(31x31)
包装: 托盘
其它名称: 82P2828BHG
IDT82P2828
28(+1) CHANNEL HIGH-DENSITY T1/E1/J1 LINE INTERFACE UNIT
Functional Description
66
February 6, 2009
3.6.2.6 Cascading Recovered Clocks of Multiple Devices
With the provided external CLKA and CLKB reference inputs for the
recovered clock outputs REFA and REFB, cascading of recovered
clocks between multiple devices can be implemented to provide a single
reference clock output from multiple devices without any additional
external logic. This can be useful in applications such as optical multi-
plexers where three IDT82P2828 are used in parallel to provide an inter-
face for up 84 T1 links for tributary aggregation to OC-3 line rates. Refer
In this setup, any two out of the 84 links can be selected to provide a
recovered clock output on REFA and REFB of device 3.
For example if it is required to recover link 1 [from device 1] for REFA
and link 80 [from device 3] for REFB, the register settings are as follows:
For REFA:
[device 1] set the REFA[4:0] bits (b4~0,REFA) to ‘00001’ to select
recovered clock of link1 as the clock source REFA1.
[device 2] set the REFA[4:0] bits (b4~0,REFA) to any value from
‘11101’ to ‘11111’ to select CLKA2 as the clock source for REFA2.
[device 3] set the REFA[4:0] bits (b4~0,REFA) to any value from
‘11101’ to ‘11111’ to select CLKA3 as the clock source for FEFA3.
For REFB:
[device3] set the REFB[4:0] bits (b4~0,REFA) to ‘11000’ to select
recovered clock of link80 as the clock source for REFB3.
Figure-44 Three IDT82P2828 in Parallel
RCLK28
REFA2
CLKA3
RCLK1
Device 2
Link58
Link29
REFB2
CLKB3
RCLK28
REFA3
RCLK1
Device 3
Link84
Link59
REFB3
RCLK28
REFA1
CLKA2
RCLK1
Link28
Link1
REFB1
CLKB2
CLKA1
CLKB1
Device 1
相关PDF资料
PDF描述
IDT82P2916BFG IC LIU T1/E1/J1 16CH SH 484BGA
IDT82P5088BBG IC LIU T1/E1/J1 OCTAL 256PBGA
IDT82V2041EPPG IC LIU T1/J1/E1 1CH 44-TQFP
IDT82V2042EPFG IC LIU T1/J1/E1 2CH SHORT 80TQFP
IDT82V2044EPFG IC LIU T1/E1 QUAD SHORT 128-TQFP
相关代理商/技术参数
参数描述
IDT82P2916 制造商:IDT 制造商全称:Integrated Device Technology 功能描述:16-Channel High-Density T1/E1/J1 Line Interface Unit
IDT82P2916BFG 功能描述:IC LIU T1/E1/J1 16CH SH 484BGA RoHS:是 类别:集成电路 (IC) >> 接口 - 电信 系列:- 产品培训模块:Lead (SnPb) Finish for COTS 产品变化通告:Product Discontinuation 06/Feb/2012 标准包装:750 系列:*
IDT82P2916BFG8 制造商:Integrated Device Technology Inc 功能描述:IC LIU T1/E1/J1 16CH SH 484BGA
IDT82P5088 制造商:IDT 制造商全称:Integrated Device Technology 功能描述:Universal Octal T1/E1/J1 LIU with Integrated Clock Adapter
IDT82P5088BBBLANK 制造商:IDT 制造商全称:Integrated Device Technology 功能描述:Universal Octal T1/E1/J1 LIU with Integrated Clock Adapter