REV. 1.0.7 8-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT D3 TxOn Transmit ON/OFF Upon power up, the transmitters are powered o" />
參數(shù)資料
型號： XRT83SH38IB-F
廠商： Exar Corporation
文件頁數(shù)： 55/78頁
文件大?。?/td> 0K
描述： IC LIU SH T1/E1/J1 8CH 225BGA
標準包裝： 84
類型： 線路接口裝置（LIU）
驅(qū)動器/接收器數(shù)： 8/8
規(guī)程： T1，E1，J1
電源電壓： 3.135 V ~ 3.465 V
安裝類型： 表面貼裝
封裝/外殼： 225-BGA
供應(yīng)商設(shè)備封裝： 225-BGA（19x19）
包裝： 托盤
XRT83SH38
56
REV. 1.0.7
8-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
D3
TxOn
Transmit ON/OFF
Upon power up, the transmitters are powered off. This bit is used
to turn the transmitter for this channel On or Off if the TxON pin is
pulled "High". If the TxON pin is pulled "Low", all 8 transmitters are
powered off.
0 = Transmitter is Powered OFF
1 = Transmitter is Powered ON
R/W
0
D2
D1
D0
LOOP2
LOOP1
LOOP0
Loopback Diagnostic Select
LOOP[2:0] are used to select the loopback mode.
0XX = No Loopback
100 = Dual Loopback
101 = Analog Loopback
110 = Remote Loopback
111 = Digital Loopback
R/W
0
TABLE 26: MICROPROCESSOR REGISTER 0X03H BIT DESCRIPTION
CHANNEL 0-7 (0X03H-0X73H)
BIT
NAME
FUNCTION
Register
Type
Default
Value
(HW reset)
D[7:6]
Reserved
This Register Bit is Not Used.
D5
CODES
Encoding/Decoding Select (Single Rail Mode Only)
0 = HDB3 (E1), B8ZS (T1)
1 = AMI Coding
R/W
0
D4
D3
RxRES1
RxRES0
Receive External Fixed Resistor
RxRES[1:0] are used to select the value for a high precision exter-
nal resistor to improve return loss.
00 = None
01 = 240
10 = 210
11 = 150
R/W
0
D2
INSBPV
Insert Bipolar Violation
When this bit transitions from a "0" to a "1", a bipolar violation will
be inserted in the transmitted QRSS/PRBS pattern. The state of
this bit will be sampled on the rising edge of TCLK. To ensure
proper operation, it is recommended to write a "0" to this bit before
writing a "1".
R/W
0
TABLE 25: MICROPROCESSOR REGISTER 0X02H BIT DESCRIPTION
CHANNEL 0-7 (0X02H-0X72H)
BIT
NAME
FUNCTION
Register
Type
Default
Value
(HW reset)
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