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参数资料
型号： WJLXT384LEB1
厂商： CORTINA SYSTEMS INC
元件分类： 数字传输电路
英文描述： DATACOM, PCM TRANSCEIVER, PQFP144
封装： 20 X 20MM, ROHS COMPLIANT, LQFP-144
文件页数： 67/140页
文件大小： 1514K
代理商： WJLXT384LEB1
32
Document Number: 248994
Revision Number: 005
Revision Date: November 28, 2005
Intel LXT384 Octal T1/E1/J1 S/H PCM Transceiver with JA
TNEG7 / UBS7
TNEG6 / UBS6
TNEG5 / UBS5
TNEG4 / UBS4
TNEG3 / UBS3
TNEG2 / UBS2
TNEG1 / UBS1
TNEG0 / UBS0
144
7
102
109
72
79
31
38
B3
D3
D12
B12
N12
L12
L3
N3
DI
Transmit Negative Data Input 7:0.
TNEG and TPOS have the following characteristics:
Operate in bipolar I/O mode.
Active-high NRZ inputs.
Remain active during an LOS condition.
TNEG/TPOS pin settings result in the selections shown in
the following table.
TPOS indicates the transmission of a positive pulse.
TNEG indicates the transmission of a negative pulse.
For other pin functions, see UBS.
TNEG7 / UBS7
TNEG6 / UBS6
TNEG5 / UBS5
TNEG4 / UBS4
TNEG3 / UBS3
TNEG2 / UBS2
TNEG1 / UBS1
TNEG0 / UBS0
144
7
102
109
72
79
31
38
B3
D3
D12
B12
N12
L12
L3
N3
DI
Unipolar/Bipolar Select Input 7:0.
The mode-controlled UBS pins define the interface between
the framer/mapper and the transceiver.
When the UBS is connected:
Low selects bipolar I/O.
High selects unipolar I/O after 16 consecutive TCLK
clock cycles. With unipolar I/O, the encoding/decoding
type can be either B8ZS/HDB3 or AMI. When the mode
is the:
Host Processor mode, the encoding/decoding type is
determined by the CODEN bit in the GCR register.
(For CODEN bit details, see Chapter 8.0,
“Registers”.)
Hardware mode, the encoding/decoding type is
determined by the CODEN pin discussed in Section
5.6, “Configuration and Mode-Select Signals”.
In unipolar I/O mode, TDATA is the data input.
For other pin functions, see TNEG.
TDATA7 / TPOS7
TDATA6 / TPOS6
TDATA5 / TPOS5
TDATA4 / TPOS4
TDATA3 / TPOS3
TDATA2 / TPOS2
TDATA1 / TPOS1
TDATA0 / TPOS0
1
8
101
108
73
80
30
37
B2
D2
D13
B13
N13
L13
L2
N2
DI
Transmit Data Input 7:0.
When unipolar I/O is selected for the LXT384 Transceiver,
TDATA is the only data input pin. After passing through the
transceiver, TDATA generates the TTIP/TRING outputs.
For other pin functions, see TPOS.
TPOS=Transmit Positive data input
TDATA=Transmit Data input
Table 9.
Framer/Mapper Transmit Signals (Sheet 2 of 3)
Signal
Name
QFP
Pin
PBGA
Ball
Signal
Type
Signal Description
TPOS
TNEG
Selection
0
Space
0
1
Negative Mark
1
0
Positive Mark
1
Space (Not legal)
相关PDF资料
PDF描述
WJLXT385LEB1 DATACOM, PCM TRANSCEIVER, PQFP144
WJLXT385LEB1 DATACOM, PCM TRANSCEIVER, PQFP144
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WJLXT386LEB2 DATACOM, PCM TRANSCEIVER, PQFP100
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