參數資料
型號: XRT75VL00IV
廠商: EXAR CORP
元件分類: 數字傳輸電路
英文描述: E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR
中文描述: DATACOM, PCM TRANSCEIVER, PQFP52
封裝: 10 X 10 MM, TQFP-52
文件頁數: 13/50頁
文件大?。?/td> 268K
代理商: XRT75VL00IV
XRT75VL00
REV. 1.0.3
E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR
11
17
LLB
I
Local Loop-back
This input pin along with RLB configures different Loop-Back modes.
N
OTE
:
This input pin is ignored and may be connected to GND if the
XRT75VL00 is operating in the HOST Mode.
18
RLB
I
Remote Loop-back
This input pin along with LLB configures different Loop-Back modes.
N
OTE
:
This input pin is ignored and should be connected to GND if the
XRT75VL00 is operating in the HOST Mode.
MICROPROCESSOR SERIAL INTERFACE - (HOST MODE)
P
IN
#
S
IGNAL
N
AME
T
YPE
D
ESCRIPTION
24
CS/RxClkINV
I
Microprocessor Serial Interface - Chip Select
Tie this “Low” to enable the communication with Serial Microprocessor Inter-
face.
N
OTE
:
If the XRT75VL00 is configured in Hardware Mode,this pin functions as
RxClkINV.
26
SCLK/TxClkINV
I
Serial Interface Clock Input
The data on the SDI pin is sampled on the rising edge of this signal. Addition-
ally, during Read operations the Microprocessor Serial Interface updates the
SDO output on the falling edge of this signal.
N
OTE
:
If the XRT75VL00 is configured in Hardware Mode, this pin functions as
TxClkINV.
25
SDI/RxON
I
Serial Data Input:
Data is serially input through this pin.
The input data is sampled on the rising edge of the SCLK pin (pin 26).
N
OTES
:
1.
This pin is internally pulled down
2.
If the XRT75VL00 is configured in Hardware Mode, this pin functions
as RxON.
27
SDO/RxMON
O
Serial Data Output:
This pin serially outputs the contents of the specified Command Register during
Read Operations. The data is updated on the falling edge of the SCLK and this
pin is tri-stated upon completion of data transfer.
N
OTE
:
If the XRT75VL00 is configured in Hardware Mode, this pin functions as
RxMON.
CONTROL AND ALARM INTERFACE
RLB
0
0
Loopback Mode
Normal Operation
Analog Local
LLB
0
1
1
1
Remote
Digital
0
1
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