ds26518 Maxim Integrated Products, Inc., ds26518 Datasheet - Page 93

• Manufacturer Part Number: ds26518
• Description: 8-port T1/e1/j1 Transceiver
• Manufacturer: Maxim Integrated Products, Inc.

9.12.6.2
The transmit system data is looped back to the receive framer. This data is also encoded and output on TTIPn and
TRINGn. Signals at RTIPn and RRINGn are ignored. This loopback is conceptually shown in
Figure 9-28. Local Loopback
9.12.6.3
The outputs decoded from the receive LIU are looped back to the transmit LIU, not including the jitter attenuator in
the path. Remote Loopback 2 includes the jitter attenuator in the loopback path. The inputs from the transmit
framer are ignored during Remote Loopback 1.
9.12.6.4
The outputs decoded from the receive LIU are looped back to the transmit LIU, including the jitter attenuator. The
inputs from the transmit framer are ignored during Remote Loopback 2. This loopback is conceptually shown in
Figure
Figure 9-29. Remote Loopback 2
TCLK
TSER
TCLK
TSER
RCLK
RSER
RCLK
RSER
9-29.
Transmit
Local Loopback
Remote Loopback 1
Remote Loopback 2
Framer
Receive
Framer
Transmit
Framer
Receive
Framer
Optional
Jitter
Attenuator
Optional
Jitter
Attenuator
Optional
Jitter
Attenuator
Optional
Jitter
Attenuator
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Transmit
Digital
Receive
Digital
Transmit
Digital
Receive
Digital
Transmit
Analog
Receive
Analog
Transmit
Analog
Receive
Analog
DS26518 8-Port T1/E1/J1 Transceiver
Line
Driver
Line
Driver
RRING
Figure
RTIP
TTIP
TRING
9-28.
RRING
RTIP
TTIP
TRING