参数资料
型号: LXT388LE
英文描述: PCM TRANSCEIVER|DUAL|CEPT PCM-30/E-1|CMOS|QFP|100PIN|PLASTIC
中文描述: 的PCM收发器|双|优税PCM-30/E-1 |的CMOS | QFP封装| 100引脚|塑料
文件页数: 43/80页
文件大小: 1112K
代理商: LXT388LE
Octal T1/E1/J1 Transceiver
LXT384
Datasheet
43
Table 23. Global Control Register, GCR (0Fh)
Bit
1
Name
Function
0
JASEL0
These bits determine the jitter attenuator position:
1
JASEL1
2
JACF
This bit determines the jitter attenuator low limit 3dB corner frequency. Refer to the
Jitter Attenuator specifications for details. See
Table 42 on page 59
.
3
FIFO64
This bit determines the jitter attenuator FIFO depth:
0 = 32 bit
1 = 64 bit
4
CODEN
This bit selects the zero suppression code for unipolar operation mode:
0 = B8ZS/HDB3 (T1/E1 respectively)
1 = AMI
5
CDIS
This bit controls enables/disables the short circuit protection feature:
0 = enabled
1 = disabled
6
RAISEN
This bit controls automatic AIS insertion in the receive path when LOS occurs:
0 = Receive AIS insertion disabled on LOS
1 = RPOS/RNEG = AIS on LOS
Note: this feature is not available in data recovery mode (MCLK=High). Disable AIS
interrupts when changing this bit value to prevent inadvertent interrupts.
7
-
Reserved.
1. On power-on reset the register is set to
0
.
Table 24. Pulse Shaping Indirect Address Register, PSIAD (10h)
Bit
1
Name
Function
0-2
LENAD 0-2
The three bit value written to these bits determine the channel to be addressed. Data
can be read from (written to) the Pulse Shaping Data Register (PSDAT).
LENAD 0-2 Channel LENAD 0-2 Channel
0h 0 4h 4
1h 1 5h 5
2h 2 6h 6
3h 3 7h 7
3 -
7
-
Reserved.
1. On power-on reset the register is set to
0
.
JASEL0
JASEL1
JA Position
1
0
Transmit Path
1
1
Receive Path
0
x
Disabled
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