PIN
參數(shù)資料
型號: XRT75VL00IVTR
廠商: Exar Corporation
文件頁數(shù): 2/50頁
文件大小: 0K
描述: IC LIU E3/DS3/STS-1 1CH 52TQFP
標準包裝: 1,000
類型: 線路接口裝置(LIU)
驅動器/接收器數(shù): 1/1
規(guī)程: DS3,E3,STS-1
電源電壓: 3.135 V ~ 3.465 V
安裝類型: 表面貼裝
封裝/外殼: 52-LQFP
供應商設備封裝: 52-TQFP(10x10)
包裝: 帶卷 (TR)
XRT75VL00
8
E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR
REV. 1.0.6
CLOCK INTERFACE
PIN #
SIGNAL NAME
TYPE
DESCRIPTION
44
ExClk/12M
I
Clock Input (34.368 MHz or 44.736 MHz or 51.84 MHz ± 20 ppm):
Based on the mode selected, provide the appropriate reference clock signal.
If the XRT75VL00 is configured for Single Frequency Mode with the SFM_EN
tied “High”, then provide a 12.288 MHz ± 20 ppm clock and depending on the
mode, the correct frequency is generated internally by the clock synthesizer..
9
SFM_EN
I
Single Frequency Enable:
Tie this pin “High” to select the single frequency mode. When enabled, a single
frequency clock, 12.288 MHz is input through the ExClk input pin and the inter-
nal clock synthesizer generates the appropriate clock frequency.
NOTE: This pin is internally pulled down.
39
CLK_OUT
O
Clock out put:
When the Single Frequency Mode is selected, a low jitter clock will be out put.
The frequency of this clock depends on whether the XRT75VL00 is configured
in E3 or DS3 or STS-1 mode.
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