WJLXT385LE.B1 Cortina Systems Inc, WJLXT385LE.B1 Datasheet - Page 34
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WJLXT385LE.B1
Manufacturer Part Number
WJLXT385LE.B1
Description
Manufacturer
Cortina Systems Inc
Datasheet
1.WJLXT385LE.B1.pdf
(138 pages)
Specifications of WJLXT385LE.B1
Lead Free Status / RoHS Status
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5.3.2
34
Intel
®
LXT385 Octal E1 S/H PCM Transceiver with JA
Bipolar vs. Unipolar Operation - Transmit Side
Table 6 on page 28
using either bipolar or unipolar interface connections.
Depending on the state of a UBS7:0 pin, both the corresponding receiver and transmitter pins are
automatically set for either bipolar I/O or unipolar I/O.
When a TNEG/UBS pin is connected low:
When a TNEG/UBS pin is connected high for more than 16 consecutive MCLK clock cycles:
•
•
•
•
•
•
TDATA - works in combination with BPV outputs, in unipolar mode.
TNEG - works in combination with TPOS, in bipolar mode.
TNEG/TPOS/TCLK lines are active, and bipolar I/O is selected.
TDATA/TCLK lines are active, and unipolar I/O is selected.
Polarity cannot be controlled on the TTIP/TRING outputs.
TCLK supplies the input synchronization for data transfer.
— A logic 1 on TNEG corresponds to the transmission of a negative pulse on TRING/TTIP.
— A logic 1 on TPOS corresponds to the transmission of a positive pulse on TRING/TTIP.
lists transmit-side framer/mapper signals, which connect to a framer/mapper
Table 8
lists details.
Revision Date: 19-Jan-2006
Document Number: 249252
Revision Number: 006
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