59
Maxim Integrated
Evaluates: DS34S132
DS34S132 Evaluation Kit
5.3.5.2 Framer Loopback and Payload Loopback
These loopbacks are not necessary for troubleshooting
purposes. Remote and local loopbacks are sufficient.
Refer to the DS26518 IC data sheet for more information
on the use of these loopbacks.
5.3.5.3 Local Loopback
Local loopback returns packets received through the
IP interface towards the network.
Figure 5-10
shows the
signal path for a typical local loopback.
5.3.5.4 Remote Loopback
Remote loopback returns the data received on the TDM
receive port to the test equipment connected to the TDM
transmit port. See
Figure 5-11
.
5.3.5.5 Ethernet Loopback
The Ethernet loopback loops data at the transmit MAC
interface (internal on the DS34S132) to the receive MAC
interface. Data coming from the TDM side is looped back
to the TDM interface. See
Figure 5-12
.
Figure 5-10. Local Loopback Diagram
Figure 5-11. Remote Loopback Diagram
Figure 5-12. Ethernet Loopback Diagram
TESTING
EQUIPMENT
PACKET
SWITCHED
NETWORK
DS34S132 EV KIT
TDM INTERFACE
IP INTERFACE
T1/E1
TRANSCEIVER
TDMoP
ETH
PHY
TESTING
EQUIPMENT
DS34S132 EV KIT
TDM INTERFACE
IP INTERFACE
T1/E1
TRANSCEIVER
TDMoP
ETH
PHY
TESTING
EQUIPMENT
DS34S132 EV KIT
TDM INTERFACE
IP INTERFACE
T1/E1
TRANSCEIVER
TDMoP
ETH
PHY
