參數(shù)資料
型號(hào): LXT361PE
英文描述: Telecommunication IC
中文描述: 通信集成電路
文件頁(yè)數(shù): 27/52頁(yè)
文件大小: 1187K
代理商: LXT361PE
Integrated T1/E1 LH/SH Transceiver for DS1/DSX-1 or PRI Applications
LXT361
Datasheet
27
Table 7. Control Register #1
Read/Write, Address (A7-A0) = x010000x
Bit
Name
Function
Jitter Attenuator
JASEL0
JASEL1
Position
0
EC1
Sets mode (T1 or E1) and equalizer
(see
Table 8
below for control codes).
1
0
Transmit
1
EC2
1
1
Receive
2
EC3
0
X
Disabled
3
EC4
4
UNIENB
1 = Enable Unipolar I/O mode and allow insertion/detection of BPVs.
0 = Enable Bipolar I/O mode
5
ENCENB
1 = Enable B8ZS/HDB3 encoders/decoders and force Unipolar I/O
mode.
0 = Disable B8ZS/HDB3 encoders/decoders
6
JASEL0
Select jitter attenuation circuitry position in data path or disables the JA.
See right hand section of table for codes.
7
JASEL1
Table 8. Equalizer Control Bit Settings
Control Register #1
Function
Pulse
Cable
Gain
Coding
2
EC4
EC3
EC2
EC1
1
0
0
0
0
T1 Long Haul
0.0 dB pulse
100
TP
36 dB
B8ZS
0
0
1
0
T1 Long Haul
-7.5 dB pulse
100
TP
36 dB
B8ZS
0
1
0
0
T1 Long Haul
-15.0 dB pulse
100
TP
36 dB
B8ZS
0
1
1
0
T1 Long Haul
-22.5 dB pulse
100
TP
36 dB
B8ZS
0
0
0
1
T1 Long Haul
0.0 dB pulse
100
TP
26 dB
B8ZS
0
0
1
1
T1 Long Haul
-7.5 dB pulse
100
TP
26 dB
B8ZS
0
1
0
1
T1 Long Haul
-15.0 dB pulse
100
TP
26 dB
B8ZS
0
1
1
1
T1 Long Haul
-22.5 dB pulse
100
TP
26 dB
B8ZS
1
0
0
0
E1 Short Haul
ITU G.703
120
TP/75
Coax
12 dB
HDB3
1
0
0
1
E1 Long Haul
ITU G.703
120
TP
43 dB
HDB3
1
0
1
0
E1 Long Haul
ITU G.703
120
TP/75
Coax
43 dB
HDB3
1
0
1
1
T1 Short Haul
0-133 ft / 0.6 dB
100
TP
12 dB
B8ZS
1
1
0
0
T1 Short Haul
133-266 ft / 1.2 dB
100
TP
12 dB
B8ZS
1
1
0
1
T1 Short Haul
266-399 ft / 1.8 dB
100
TP
12 dB
B8ZS
1
1
1
0
T1 Short Haul
399-533 ft / 2.4 dB
100
TP
12 dB
B8ZS
1
1
1
1
T1 Short Haul
533-655 ft / 3.0 dB
100
TP
12 dB
B8ZS
1. EC1 sets the receive equalizer gain (EGL) during T1 Long-Hual operation.
2. When enabled.
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