参数资料
型号: XRT83L38IB
厂商: Exar Corporation
文件页数: 50/87页
文件大小: 0K
描述: IC LIU T1/E1/J1 OCTAL 225BGA
标准包装: 84
类型: 线路接口装置(LIU)
驱动器/接收器数: 8/8
规程: T1,E1,J1
电源电压: 3.135 V ~ 3.465 V
安装类型: 表面贴装
封装/外壳: 225-BGA
供应商设备封装: 225-BGA(19x19)
包装: 托盘
XRT83L38
51
OCTAL T1/E1/J1 LH/SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
REV. 1.0.2
TABLE 20: MICROPROCESSOR REGISTER #1, BIT DESCRIPTION
REGISTER ADDRESS
00000001
00010001
00100001
00110001
01000001
01010001
01100001
01110001
CHANNEL_n
CHANNEL_0
CHANNEL_1
CHANNEL_2
CHANNEL_3
CHANNEL_4
CHANNEL_5
CHANNEL_6
CHANNEL_7
FUNCTION
REGISTER
TYPE
RESET
VALUE
BIT #
NAME
D7
RXTSEL_n
Receiver Termination Select: In Host mode, this bit is used
to select between the internal and external line termination
modes for the receiver according to the following table;
R/W
0
D6
TXTSEL_n
Transmit Termination Select: In Host mode, this bit is used
to select between the internal and external line termination
modes for the transmitter according to the following table;
R/W
0
D5
TERSEL1_n
Termination Impedance Select1:
In
Host mode and in internal termination mode, (TXTSEL = “1”
and RXTSEL = “1”) TERSEL[1:0] control the transmit and
receive termination impedance according to the following
table;
In the internal termination mode, the receiver termination of
each receiver is realized completely by internal resistors or by
the combination of internal and one fixed external resistor.
In the internal termination mode, the transmitter output should
be AC coupled to the transformer.
R/W
0
D4
TERSEL0_n
Termination Impedance Select bit 0:
R/W
0
RXTSEL
RX Termination
0
1
External
Internal
TXTSEL
TX Termination
0
1
External
Internal
TERSEL1 TERSEL0
0
1
0
1
Termination
100
Ω
110
Ω
75
Ω
120
Ω
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