参数资料
型号: IDT82V3358EDG
厂商: IDT, Integrated Device Technology Inc
文件页数: 3/139页
文件大小: 0K
描述: IC PLL WAN SYNC ETHERNET 64TQFP
标准包装: 160
类型: 时钟/频率发生器,多路复用器
PLL:
主要目的: 以太网,SONET/SDH,Stratum
输入: CMOS,LVDS,PECL
输出: CMOS,LVDS,PECL
电路数: 1
比率 - 输入:输出: 2:4
差分 - 输入:输出: 是/是
频率 - 最大: 622.08MHz
电源电压: 3 V ~ 3.6 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 64-TQFP 裸露焊盘
供应商设备封装: 64-TQFP-EP(10x10)
包装: 托盘
IDT82V3358
SYNCHRONOUS ETHERNET WAN PLL
Programming Information
100
May 19, 2009
T0_HOLDOVER_FREQ[15:8]_CNFG - T0 DPLL Holdover Frequency Configuration 2
T0_HOLDOVER_FREQ[23:16]_CNFG - T0 DPLL Holdover Frequency Configuration 3
Address: 5EH
Type: Read / Write
Default Value: 00000000
Bit
Name
Description
7 - 0
T0_HOLDOVER_FREQ[15:8] Refer to the description of the T0_HOLDOVER_FREQ[23:16] bits (b7~0, 5FH).
Address: 5FH
Type: Read / Write
Default Value: 00000000
Bit
Name
Description
7 - 0
T0_HOLDOVER_FREQ[23:16]
The T0_HOLDOVER_FREQ[23:0] bits represent a 2’s complement signed integer.
In T0 DPLL Holdover mode, the value written to these bits multiplied by 0.000011 is the frequency offset set manu-
ally; the value read from these bits multiplied by 0.000011 is the frequency offset automatically slow or fast aver-
aged or manually set, as determined by the READ_AVG bit (b4, 5CH) and the FAST_AVG bit (b5, 5CH).
7
6
5
4
3
210
T0_HOLDOVER
_FREQ15
T0_HOLDOVER
_FREQ14
T0_HOLDOVER
_FREQ13
T0_HOLDOVE
R_FREQ12
T0_HOLDOVE
R_FREQ11
T0_HOLDOVE
R_FREQ10
T0_HOLDOVE
R_FREQ9
T0_HOLDOVE
R_FREQ8
7
6
5
4
3
210
T0_HOLDOVER
_FREQ23
T0_HOLDOVER
_FREQ22
T0_HOLDOVER
_FREQ21
T0_HOLDOVE
R_FREQ20
T0_HOLDOVE
R_FREQ19
T0_HOLDOVE
R_FREQ18
T0_HOLDOVE
R_FREQ17
T0_HOLDOVE
R_FREQ16
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