lxt384 Intel Corporation, lxt384 Datasheet - Page 61

• Manufacturer Part Number: lxt384
• Description: Octal T1/e1/j1 Short Haul Transceiver
• Manufacturer: Intel Corporation

6.7.2
Document Number: 248994
Revision Number: 004
Revision Date: September 22, 2005
Figure 9. Intel
Digital Loopback
The digital loopback function is available in the Host Processor mode only.
As
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.
Figure 9
Table 40
RNEG
RPOS
®
TPOS
TNEG
RCLK
TCLK
LXT384 Transceiver Digital Loopback
shows, when digital loopback is selected, the transmit clock TCLK and transmit data
in
* If Enabled
Chapter 8.0,
JA*
JA*
“Registers”.)
Intel
Recovery
Timing &
Control
Timing
®
LXT384 Octal T1/E1/J1 S/H PCM Transceiver with JA
TTIP
TRING
RTIP
RRING
61