參數(shù)資料
型號(hào)： XRT75R12IB-L
廠商： Exar Corporation
文件頁(yè)數(shù)： 58/90頁(yè)
文件大?。?/td> 0K
描述： IC LIU E3/DS3/STS-1 12CH 420TBGA
標(biāo)準(zhǔn)包裝： 40
類型： 線路接口裝置（LIU）
驅(qū)動(dòng)器/接收器數(shù)： 12/12
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： 420-LBGA 裸露焊盤(pán)
供應(yīng)商設(shè)備封裝： 420-TBGA（35x35）
包裝： 托盤(pán)
XRT75R12
58
REV. 1.0.4
TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR
REGISTER DESCRIPTION - GLOBAL REGISTERS
TABLE 19: APS/REDUNDANCY TRANSMIT CONTROL REGISTER - CR0 (ADDRESS LOCATION = 0X00)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
Reserved
TxON Ch 5
TxON Ch 4
TxON Ch 3
TxON Ch 2
TxON Ch 1
TxON Ch 0
R/W
BIT
NUMBER
NAME
TYPE
DESCRIPTION
7,6
Reserved
5
4
3
2
1
0
TxON Ch 5
TxON Ch 4
TxON Ch 3
TxON Ch 2
TxON Ch 1
TxON Ch 0
R/W
Transmit Section ON - Channel n
This READ/WRITE bit-field is used to turn on or turn off the Transmit Driver associated
with Channel n. If the user turns on the Transmit Driver, then Channel n will transmit
DS3, E3 or STS-1 pulses on the line via the TTIP_n and TRING_ n output pins.
Conversely, if the user turns off the Transmit Driver, then the TTIP_n and TRING_n
output pins will be tri-stated.
0 - Shuts off the Transmit Driver associated with Channel n and tri-states the TTIP_n
and TRING_ n output pins.
1 - Turns on the Transmit Driver associated with Channel n.
NOTE: The master TxON control pin(pin # P4) must be in a high state (logic 1) for this
operation to turn on any channel.
TABLE 20: APS/REDUNDANCY RECIEVE CONTROL REGISTER - CR8 (ADDRESS LOCATION = 0X08)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
Reserved
RxON Ch 5
RxON Ch 4
RxON Ch 3
RxON Ch 2
RxON Ch 1
RxON Ch 0
R/W
BIT
NUMBER
NAME
TYPE
DESCRIPTION
7,6
Reserved
5
4
3
2
1
0
RxON Ch 5
RxON Ch 4
RxON Ch 3
RxON Ch 2
RxON Ch 1
RxON Ch 0
R/W
Receive Section ON - Channel n
This READ/WRITE bit-field is used to turn on or turn off the Receiver associated with
Channel n on a per channel basis. If the user turns on the Receiver, then Channel n
will Receive DS3, E3 or STS-1 pulses on the line via the RTIP_n and RRING_ n input
pins.
Conversely, if the user turns off the Receiver Driver (for channel n), the RTIP_n and
RRING_n input pins will be in a high impedance state.
0 - Shuts off the Receive Driver associated with Channel n and puts the RTIP_n and
RRING_ n input pins in a high impedance state.
1 - Turns on the Receive Driver associated with Channel n.
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