參數(shù)資料
型號(hào): IDT82V3280DQG8
廠商: IDT, Integrated Device Technology Inc
文件頁數(shù): 166/171頁
文件大小: 0K
描述: IC PLL WAN SE STRATUM 2 100-TQFP
標(biāo)準(zhǔn)包裝: 750
類型: 時(shí)鐘/頻率發(fā)生器,多路復(fù)用器
PLL:
主要目的: 以太網(wǎng),SONET/SDH,Stratum
輸入: CMOS,LVDS,PECL
輸出: CMOS,LVDS,PECL
電路數(shù): 1
比率 - 輸入:輸出: 14:9
差分 - 輸入:輸出: 是/是
頻率 - 最大: 622.08MHz
電源電壓: 3 V ~ 3.6 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 100-LQFP 裸露焊盤
供應(yīng)商設(shè)備封裝: 100-TQFP-EP(14x14)
包裝: 帶卷 (TR)
其它名稱: 82V3280DQG8
IDT82V3280
WAN PLL
Programming Information
94
December 9, 2008
PRE_DIVN[14:8]_CNFG - DivN Divider Division Factor Configuration 2
Address: 25H
Type: Read / Write
Default Value: X0000000
Bit
Name
Description
7-
Reserved.
6 - 0
PRE_DIVN_VALUE[14:8]
If the value in the PRE_DIVN_VALUE[14:0] bits is plus 1, the division factor for an input clock will be gotten. The input
clock is selected by the PRE_DIV_CH_VALUE[3:0] bits (b3~0, 23H).
A value from ‘0’ to ‘4BEF’ (Hex) can be written into, corresponding to a division factor from 1 to 19440. The others are
reserved. So the DivN Divider only supports an input clock whose frequency is lower than (
<) 155.52 MHz.
The division factor setting should observe the following order:
1. Write the lower eight bits of the division factor to the PRE_DIVN_VALUE[7:0] bits;
2. Write the higher eight bits of the division factor to the PRE_DIVN_VALUE[14:8] bits.
7
6543210
-
PRE_DIVN_VAL
UE14
PRE_DIVN_VAL
UE13
PRE_DIVN_VAL
UE12
PRE_DIVN_VAL
UE11
PRE_DIVN_VAL
UE10
PRE_DIVN_VAL
UE9
PRE_DIVN_VAL
UE8
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