参数资料
型号: IDT82P2828BHG
厂商: IDT, Integrated Device Technology Inc
文件页数: 138/154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
Programming Information
84
February 6, 2009
3
FREE
This bit is valid only when the selected clock source for REFA passes the internal Frequency Synthesizer
In normal operation:
0: Output the clock which is locked to the selected clock source and the frequency is programmed in the FREQ[2:0] bits (b2~0,
REFCF). (default)
1: Output free running clock which is locked to MCLK and the frequency is programmed in the FREQ[2:0] bits (b2~0, REFCF).
When the selected clock source is lost, this bit, together with the FS_BYPAS bit (b4, REFCF) and the REFH bit (b5, REFCF),
controls the output on REFA:
2 - 0
FREQ[2:0]
These bits are valid only when the Frequency Synthesizer on REFA is enabled. These bits determine the output clock frequency.
Selected Clock
Source
FS_BYPA
S
FREE
REFH
Output On REFA
CLKA
0
(don’t-
care)
High level.
1
Free running clock, whose frequency is programmed
in the FREQ[2:0] bits (b2~0, REFCF).
1
(don’t-care)
High level.
Recovered clock of
one of the 29 chan-
nels.
0
Free running clock, whose frequency is programmed
in the FREQ[2:0] bits (b2~0, REFCF).
1
High level.
1
(don’t-
care)
Free running clock, whose frequency is programmed
in the FREQ[2:0] bits (b2~0, REFCF).
1
(don’t-
care)
0
Free running clock, whose frequency is 1.544 MHz in
T1 mode or 2.048 MHz in E1 mode.
1
High level.
FREQ[2:0]
Output when FS_BYPAS=0, FREE=0 and the
Frequency Synthesizer uses RCLKn or CLKA as
reference clock
Output when FS_BYPAS=0 and FREE=1
(the Frequency Synthesizer is free running)
0 0 0
1.544 MHz if the selected clock source is 1.544 MHz; or
2.048 MHz if the selected clock source is 2.048 MHz
-
0 0 1
8 kHz
0 1 0
64 kHz
0 1 1
Reserved
-
1 0 0
4.096 MHz
1 0 1
8.192 MHz
1 1 0
19.44 MHz
1 1 1
32.768 MHz
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