WJLXT384LE.B1-868635 Cortina Systems Inc, WJLXT384LE.B1-868635 Datasheet - Page 60

• Manufacturer Part Number: WJLXT384LE.B1-868635
• Manufacturer: Cortina Systems Inc

Specifications of WJLXT384LE.B1-868635

• Screening Level: Industrial
• Mounting: Surface Mount
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Lead Free Status / RoHS Status: Compliant

LXT384 Transceiver
Datasheet
248994, Revision 6.0
30 January 2008
6.7.3
Figure 10
6.8
Note:
6.8.1
Notes:
Cortina Systems
Remote Loopback
As
outputs route to the transmit circuits, and data are output on the TTIP and TRING pins. (For
the LOOP pin settings that select remote loopback, see
Signals.)
When the LXT384 Transceiver is in a remote loopback:
LXT384 Transceiver Remote Loopback
Transmit All Ones Operations
For Transmit All Ones (TAOS) operations, the LXT384 Transceiver has the following TAOS
modes:
The TAOS mode is inhibited during Remote loopback.
TAOS Generation
When the LXT384 Transceiver is set for a:
®
1. The TAOS generator uses the clock signal on the MCLK pin as a timing reference. As a
• It ignores input signals on the TCLK, TPOS, and TNEG.
• The pulse template cannot be guaranteed in data-recovery mode.
•
•
•
• Hardware mode, the TAOS mode is set by connecting the TCLK pin high for more than
• Host Processor mode, the TAOS mode is set by asserting the corresponding bit in the
LXT384 Octal T1/E1/J1 Short-Haul PCM Transceiver with Jitter Attenuation (JA)
Figure 10
Section 6.8.1, TAOS Generation
Section 6.8.2, TAOS Generation with Analog Loopback
Section 6.8.3, TAOS Generation with Digital Loopback
16 MCLK cycles.
TAOS register. In case of LOS, Automatic TAOS Select (ATS) insertion can be set with
the ATS register
result, when the LXT384 Transceiver is set for data-recovery mode with a Motorola*
TNEG
RNEG
TPOS
RPOS
RCLK
TCLK
shows, when a remote loopback is selected, the RCLK, RPOS, and RNEG
* If Enabled
(Table
41).
JA*
JA*
Timing &
Recovery
Control
Timing
TM
TM
Section 5.4, Line Interface Unit
6.8 Transmit All Ones Operations
TTIP
TRING
RTIP
RRING
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