參數(shù)資料
型號: IDT82V3280DQG8
廠商: IDT, Integrated Device Technology Inc
文件頁數(shù): 27/171頁
文件大?。?/td> 0K
描述: IC PLL WAN SE STRATUM 2 100-TQFP
標(biāo)準包裝: 750
類型: 時鐘/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
122
December 9, 2008
7.2.7
T0 / T4 DPLL & APLL CONFIGURATION REGISTERS
T0_DPLL_APLL_PATH_CNFG - T0 DPLL & APLL Path Configuration
Address: 55H
Type: Read / Write
Default Value: 00000X0X
Bit
Name
Description
7 - 4
T0_APLL_PATH[3:0]
These bits select an input to the T0 APLL.
0000: The output of T0 DPLL 77.76 MHz path. (default)
0001: The output of T0 DPLL 12E1/24T1/E3/T3 path.
0010: The output of T0 DPLL 16E1/16T1 path.
0011: The output of T0 DPLL GSM/OBSAI/16E1/16T1 path.
0100: The output of T4 DPLL 77.76 MHz path.
0101: The output of T4 DPLL 12E1/24T1/E3/T3 path.
0110: The output of T4 DPLL 16E1/16T1 path.
0111: The output of T4 DPLL GSM/GPS/16E1/16T1 path.
1XXX: Reserved.
3 - 2
T0_GSM_OBSAI_16E1_16T1_SEL[1:0]
These bits select an output clock from the T0 DPLL GSM/OBSAI/16E1/16T1 path.
00: 16E1.
01: 16T1.
10: GSM.
11: OBSAI.
The default value of the T0_GSM_OBSAI_16E1_16T1_SEL0 bit is determined by the SONET/SDH pin dur-
ing reset.
1 - 0
T0_12E1_24T1_E3_T3_SEL[1:0]
These bits select an output clock from the T0 DPLL 12E1/24T1/E3/T3 path.
00: 12E1.
01: 24T1.
10: E3.
11: T3.
The default value of the T0_12E1_24T1_E3_T3_SEL0 bit is determined by the SONET/SDH pin during
reset.
76
5
4
3
2
1
0
T0_APLL_PATH
3
T0_APLL_PA
TH2
T0_APLL_PA
TH1
T0_APLL_PA
TH0
T0_GSM_OBSAI_
16E1_16T1_SEL1
T0_GSM_OBSAI_
16E1_16T1_SEL0
T0_12E1_24T1_
E3_T3_SEL1
T0_12E1_24T1_
E3_T3_SEL0
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