參數(shù)資料
型號: XRT75L04DIVTR
廠商: Exar Corporation
文件頁數(shù): 8/98頁
文件大?。?/td> 0K
描述: IC LIU E3/DS3/STS-1 4CH 176TQFP
標準包裝: 1,000
類型: 線路接口裝置(LIU)
驅動器/接收器數(shù): 4/4
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: 176-LQFP
供應商設備封裝: 176-TQFP(24x24)
包裝: 帶卷 (TR)
XRT75L04D
á
FOUR CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
REV. 1.0.1
12
94
103
127
118
LLB_0
LLB_1
LLB_2
LLB_3
I
Local Loop-back - Channel 0:
Local Loop-back - Channel 1:
Local Loop-back - Channel 2:
Local Loop-back - Channel 3:
This input pin along with RLB_n configures different Loop-Back modes.
A "High" on this pin with RLB_n set to "Low" configures Channel_n to operate
in the Analog Local Loop-back Mode.
A "High" on this pin with RLB_n set to "High" configures Channel_n to operate
in the Digital Local Loop-back Mode.
NOTE:
This input pin is ignored and should be connected to GND if the
XRT75L04D is operating in the HOST Mode.
95
104
126
117
RLB_0
RLB_1
RLB_2
RLB_3
I
Remote Loop-back - Channel 0:
Remote Loop-back - Channel 1:
Remote Loop-back - Channel 2:
Remote Loop-back - Channel 3:
This input pin along with LLB_n configures different Loop-Back modes.
A "High" on this pin with LLB_n set to “Low" configures Channel_n to operate in
the Remote Loop-back Mode.
A "High" on this pin with LLB_n set to "High" configures Channel_n to operate
in the Digital Local Loop-back Mode.
NOTE:
This input pin is ignored and should be connected to GND if the
XRT75L04D is operating in the HOST Mode.
OPERATING MODE SELECT
PIN #SIGNAL NAME
TYPE
DESCRIPTION
134
HOST/(HW)I
HOST/Hardware Mode Select:
Tie this pin “High” to configure in HOST mode. Tie this “Low” to configure in
Hardware mode.
When configured in HOST mode, the states of many of the discrete input pins
are controlled by internal register bits.
NOTE: This pin is internally pulled up.
CONTROL AND ALARM INTERFACE
RLB_n
0
Loopback Mode
Normal Operation
Analog Local
LLB_n
0
1
Remote
Digital
0
1
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