WJLXT384LE.B1-868635 Cortina Systems Inc, WJLXT384LE.B1-868635 Datasheet - Page 59

• 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
Figure 8
6.7.2
Figure 9
Cortina Systems
LXT384 Transceiver Analog Loopback
Digital Loopback
The digital loopback function is available in the Host Processor mode only.
As
data inputs TPOS and TNEG are looped back and are output on the RCLK, RPOS, and
RNEG pins. The data on TPOS and TNEG is also output on the TTIP and TRING pins. (To
select digital loopback, see
When the LXT384 Transceiver is in a digital loopback, it ignores input signals on RTIP and
RRING.
LXT384 Transceiver Digital Loopback
®
LXT384 Octal T1/E1/J1 Short-Haul PCM Transceiver with Jitter Attenuation (JA)
Figure 9
RNEG
RNEG
RPOS
RPOS
TNEG
TNEG
TPOS
TPOS
RCLK
RCLK
TCLK
TCLK
shows, when digital loopback is selected, the transmit clock TCLK and transmit
* If Enabled
* If Enabled
Table 39
JA*
JA*
JA*
JA*
in
Section 8.0,
Recovery
Timing &
Control
Timing
Recovery
Timing &
Registers.)
Control
Timing
TM
TM
TTIP
TRING
RTIP
RRING
TTIP
TRING
RTIP
RRING
6.7 Loopbacks
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