ds265188-port-t1-e1-j1-transc Maxim Integrated Products, Inc., ds265188-port-t1-e1-j1-transc Datasheet - Page 100

• Manufacturer Part Number: ds265188-port-t1-e1-j1-transc
• Description: Ds26518 8-port T1/e1/j1 Transceiver
• Manufacturer: Maxim Integrated Products, Inc.

9.12.6.5
The inputs decoded from the receive LIU are looped back to the transmit LIU. The inputs from the transmit framer
are looped back to the receiver with the optional jitter attenuator. Dual Loopback is a combination of Local
Loopback and Remote Loopback 1. This loopback is invoked by setting the correct bits in the LIU Maintenance
Control Register (LMCR). This loopback is conceptually shown in
Figure 9-32. Dual Loopback
TCLK
TSER
RCLK
RSER
Transmit
Framer
Receive
Framer
Dual Loopback
Optional
Jitter
Attenuator
Optional
Jitter
Attenuator
Receive
Digital
Transmit
Digital
100 of 313
Transmit
Analog
Receive
Analog
Figure
9-32.
Line
Driver
DS26518 8-Port T1/E1/J1 Transceiver
RRING
TTIP
TRING
RTIP