參數(shù)資料
型號(hào)： XRT75L02
廠商： Exar Corporation
英文描述： TWO CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER
中文描述： 雙通道E3/DS3/STS-1線路接口單元，其抖動(dòng)
文件頁數(shù)： 10/50頁
文件大?。?/td> 343K
代理商： XRT75L02
xr
REV. 1.0.3
XRT75L02
TWO CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER
8
CLOCK INTERFACE
P
IN
#
S
IGNAL
N
AME
T
YPE
D
ESCRIPTION
66
E3CLK
I
E3 Clock Input (34.368 MHz ± 20 ppm):
If any of the channels is configured in E3 mode, a reference clock 34.368 MHz
is applied on this pin.
N
OTE
:
In single frequency mode, this reference clock is not required.
63
DS3CLK
I
DS3 Clock Input (44.736 MHz ± 20 ppm):
If any of the channels is configured in DS3 mode, a reference clock 44.736
MHz. is applied on this pin.
N
OTE
:
In single frequency mode, this reference clock is not required.
60
STS-1CLK/ 12M
I
STS-1 Clock Input (51.84 MHz ± 20 ppm):
If any of the channels is configured in STS-1 mode, a reference clock 51.84
MHz is applied on this pin..
In Single Frequency Mode, a reference clock of 12.288 MHz ± 20 ppm is con-
nected to this pin and the internal clock synthesizer generates the appropriate
clock frequencies based on the configuration of the channels in E3, DS3 or
STS-1.
99
SFM_EN
I
Single Frequency Mode Enable:
Tie this pin “High” to enable the Single Frequency Mode. A reference clock of
12.288 MHz ± 20 ppm is applied. This offers the flexibility of using a low cost
reference clock and configures the board for either E3 or DS3 or STS-1 without
the need to change any components on the board.
In the Single Frequency Mode (SFM) an output clock is provided for each chan-
nel if the CLKOUT_EN bit is set or CLKOUT_EN pin tied “High”.
Tie this pin “Low” if single frequency mode is not selected. In this case, the
appropriate reference clocks must be provided.
N
OTE
:
This pin is internally pulled down
80
46
CLKOUT_0
CLKOUT_1
O
Clock output for channel 0
Clock output for channel 1
Low jitter clock is output for each channel based on the mode selection
(E3,DS3 or STS-1) if the CLK_EN_n bit is set in the control register or
CLKOUT_EN pin is tied “High”.
This eliminates the need for a separate clock source for the framer.
N
OTES
:
1.
This clock output is only available in SFM mode.
2.
The maximum drive capability for the clockouts is 16 mA.
45
CLKOUT_EN
I
Clock Output Enable in Single Frequency Mode:
Tie this pin “High” to enable the output clocks via the CLKOUT pins.
相關(guān)PDF資料
PDF描述
XRT75L02IV TWO CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER
XRT75L03D THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
XRT75L04D FOUR CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
XRT75L04DIV FOUR CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
XRT75L04 FOUR CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XRT75L02DES 功能描述:時(shí)鐘合成器/抖動(dòng)清除器 2CH T3/E3/STS1 LIU+DESYNCH 3.3V RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel
XRT75L02DIV-F 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 2-Ch E3/DS3/STS-1 RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
XRT75L02DIVTR-F 功能描述:時(shí)鐘合成器/抖動(dòng)清除器 RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel
XRT75L02ES 功能描述:時(shí)鐘合成器/抖動(dòng)清除器 RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel
XRT75L02IV 制造商:EXAR 制造商全稱:EXAR 功能描述:TWO CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER
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