EELXT360PE.A2-868068 Cortina Systems Inc, EELXT360PE.A2-868068 Datasheet - Page 23

• Manufacturer Part Number: EELXT360PE.A2-868068
• Manufacturer: Cortina Systems Inc

Specifications of EELXT360PE.A2-868068

• Number Of Transceivers: 1
• Operating Supply Voltage (typ): 5V
• Screening Level: Industrial
• Mounting: Surface Mount
• Operating Supply Voltage (min): 4.75V
• Operating Supply Voltage (max): 5.25V
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Lead Free Status / RoHS Status: Compliant

LXT360 Transceiver
Datasheet: Long Form
249231, Revision 2.1
24 January 2008
Figure 7
2.7.1.3
2.7.1.4
Cortina Systems
Analog Loopback
Remote Loopback (RLOOP)
See
clock inputs (TCLK and TPOS/TNEG or TDATA), and bypasses the in-line encoders/
decoders. The RPOS/RNEG or RDATA outputs loop back through the transmit circuits to
TTIP and TRING at the RCLK frequency. The RLOOP command does not affect the receiver
circuits which continue to output the RCLK and RPOS/RNEG or RDATA signals received
from the twisted-pair line.
In Host mode, command RLOOP by writing a 1 to bit CR2.ERLOOP . In Hardware mode,
RLOOP is commanded by setting the RLOOP pin High.
Network Loopback (NLOOP)
NLOOP can be initiated only when the Network loopback detect function is enabled. With
NLOOP detection enabled, the receiver looks for the NLOOP data patterns (00001 = enable,
001 = disable) in the input data stream. The LXT360 Transceiver responds to both framed
and unframed NLOOP patterns.
When the receiver detects the NLOOP enable data pattern repeated for a minimum of five
seconds, loopback is activated. Once activated, operation is identical to Remote loopback
(RLOOP).
In Host mode, setting bit CR2.ENLOOP = 1 enables NLOOP detection. In Hardware mode,
setting the RLOOP pin to Midrange enables NLOOP detection.
®
LXT360 Integrated T1/E1 LH/SH Transceiver for DS1/DSX-1 or PRI Applications
Figure 8 on page
24. When RLOOP is active, the device ignores the transmit data and
TM
TM
2.7 Diagnostic Mode Operation
Page 23