參數(shù)資料
型號(hào): IDT82V3255TFG8
廠商: IDT, Integrated Device Technology Inc
文件頁數(shù): 9/132頁
文件大?。?/td> 0K
描述: IC PLL WAN SMC STRATUM 3 64-TQFP
標(biāo)準(zhǔn)包裝: 1,250
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: 3:3
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: 64-LQFP
供應(yīng)商設(shè)備封裝: 64-TQFP(10x10)
包裝: 帶卷 (TR)
其它名稱: 82V3255TFG8
IDT82V3255
WAN PLL
Programming Information
106
December 3, 2008
FR_MFR_SYNC_CNFG - Frame Sync & Multiframe Sync Output Configuration
Address:74H
Type: Read / Write
Default Value: 01100000
Bit
Name
Description
7
IN_2K_4K_8K_INV
This bit determines whether the input clock is inverted before locked by the T0/T4 DPLL when the input clock is 2 kHz, 4
kHz or 8 kHz.
0: Not inverted. (default)
1: Inverted.
6
8K_EN
This bit determines whether an 8 kHz signal is enabled to be output on FRSYNC_8K.
0: Disabled. FRSYNC_8K outputs low.
1: Enabled. (default)
5
2K_EN
This bit determines whether a 2 kHz signal is enabled to be output on MFRSYNC_2K.
0: Disabled. MFRSYNC_2K outputs low.
1: Enabled. (default)
4
2K_8K_PUL_POSITION
This bit is valid only when FRSYNC_8K and/or MFRSYNC_2K output pulse; i.e., when one of the 8K_PUL bit (b2, 74H)
and the 2K_PUL bit (b0, 74H) is ‘1’ or when the 8K_PUL bit (b2, 74H) and the 2K_PUL bit (b0, 74H) are both ‘1’. It deter-
mines the pulse position referring to the standard 50:50 duty cycle.
0: Pulsed on the falling edge of the standard 50:50 duty cycle position. (default)
1: Pulsed on the rising edge of the standard 50:50 duty cycle position.
38K_INV
This bit determines whether the output on FRSYNC_8K is inverted.
0: Not inverted. (default)
1: Inverted.
2
8K_PUL
This bit determines whether the output on FRSYNC_8K is 50:50 duty cycle or pulsed.
0: 50:50 duty cycle. (default)
1: Pulsed. The pulse width is defined by the period of the output on OUT2.
12K_INV
This bit determines whether the output on MFRSYNC_2K is inverted.
0: Not inverted. (default)
1: Inverted.
0
2K_PUL
This bit determines whether the output on MFRSYNC_2K is 50:50 duty cycle or pulsed.
0: 50:50 duty cycle. (default)
1: Pulsed. The pulse width is defined by the period of the output on OUT2.
76543210
IN_2K_4K_8K_I
NV
8K_EN
2K_EN
2K_8K_PUL_P
OSITION
8K_INV
8K_PUL
2K_INV
2K_PUL
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