参数资料
型号: XRT91L34IV
厂商: Exar Corporation
文件页数: 35/38页
文件大小: 0K
描述: IC MULTIRATE CDR QUAD 128LQFP
标准包装: 72
类型: 时钟和数据恢复(CDR),扇出缓冲器(分配),多路复用器
PLL:
主要目的: SONET/SDH,STS,STM
输入: LVDS,LVPECL
输出: LVDS,LVPECL
电路数: 1
比率 - 输入:输出: 1:2
差分 - 输入:输出: 是/是
频率 - 最大: 622.08MHz
电源电压: 1.71 V ~ 3.465 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 128-LQFP
供应商设备封装: 128-LQFP(14x14)
包装: 托盘
XRT91L34
6
QUAD CHANNEL MULTIRATE STS-12/3/1 AND STM-4/1/0 SONET/SDH CDR
REV. 1.0.1
PIN DESCRIPTIONS
HARDWARE CONTROL
NAME
LEVEL
TYPE
PIN
DESCRIPTION
RESET
LVTTL,
LVCMOS
I
46
Master Reset Input
Active "Low." When this pin is pulled "Low", the internal state
machines and registers are set to their default state.
"Low" = Master Hardware Reset
"High" = Normal Operation
This pin is provided with an internal pull-up.
TEST
LVTTL,
LVCMOS
I
45
Test Input
Active "High." When this pin is pulled "High", the 91L34 internal
state machines will enter into a factory test mode.
"Low" = Normal Operation
"High" = Factory Test Diagnostic Mode
NOTE: This pin should be pulled Low for normal operation.
This pin is provided with an internal pull-down.
DATA0RATE[1:0]
LVTTL,
LVCMOS
I
115, 116
Data Rate Selection
Selects SONET/SDH reception speed rate for each of the four
channels independently according to the logic below.
NOTE: These pins have no function in Host Mode.
These pins are provided with internal pull-down.
DATA1RATE[1:0]
LVTTL,
LVCMOS
I
113, 114
DATA2RATE[1:0]
LVTTL,
LVCMOS
I
50, 49
DATA3RATE[1:0]
LVTTL,
LVCMOS
I
48, 47
DATANRATE[1:0]
DATA RATE
0
STS-1/STM-0
51.84 Mbps
0
1
STS-3/STM-1
155.52 Mbps
1
0
STS-12/STM-4
622.08 Mbps
1
STS-12/STM-4
622.08 Mbps
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