参数资料
型号: LXT384BE
元件分类: 通信、网络模块及开发工具
英文描述: Telecomm/Datacomm
中文描述: 电信/数据通信
文件页数: 44/80页
文件大小: 1112K
代理商: LXT384BE
LXT384
Octal T1/E1/J1 Transceiver
44
Datasheet
Table 25. Pulse Shaping Data Register, PSDAT (11h)
Bit
Name
Function
0-2
LEN 0-2
1, 3
LEN0-2 determine the LXT384 operation mode: T1 or E1. In addition, for T1 operation,
LEN2-0 set the pulse shaping to meet the T1.102 pulse template at the DSX-1 cross-
connect point for various cable lengths:
LEN2
LEN1
LEN0
Line Length
Cable Loss
2
Operation
Mode
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
0 - 133 ft. ABAM
133 - 266 ft. ABAM
266 - 399 ft. ABAM
399 - 533 ft. ABAM
533 - 655 ft. ABAM
0.6 dB
1.2 dB
1.8 dB
2.4 dB
3.0 dB
T1
0 0 0
E1 G.703, 75
coaxial cable and 120
twisted pair cable.
E1
3 -
7
-
Reserved.
1. On power-on reset the register is set to
0
.
2. Maximum cable loss at 772 KHz.
3. When reading LEN, bit values appear inverted.
B2
revision silicon will fix this so the bits read back
correctly.
Table 26. Output Enable Register, OER (12h)
Bit
1
Name
Function
7-0
OE7 - OE0
Setting a bit to
1
tristates the output driver of the corresponding transceiver.
1. On power-up all the register bits are set to
0
.
Table 27. AIS Status Monitor Register, AIS (13h)
Bit
1
Name
Function
7-0
AIS7-AIS0
Respective bit(s) are set to
1
every time the receiver detects a AIS condition in
transceivers 7-0.
1. On power-up all the register bits are set to
0
. All AIS interrupts are cleared by a single read operation.
Table 28. AIS Interrupt Enable Register, AISIE (14h)
Bit
1
Name
Function
7-0
AISIE7-AISIE0
Transceiver 7-0 AIS interrupts are enabled by writing a
1
to the respective bit.
1. On power-up all the register bits are set to
0
.
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