Motorola PowerQUICC II MPC8280 Series Reference Manual page 111

The MPC8280 memory controller supports many types of memories, including EDO
DRAM and page-mode, pipeline SDRAM for efficient burst transfers.
1.7.1.2 Regional Office Router
Figure 1-4 shows a regional office router configuration.
Quad
T1
Framer
MII
Transceiver
Slow
Comm
PHY
Figure 1-4. Regional Office Router Configuration
In this application, the MPC8280 is connected to four TDM interfaces channelizing up to
128 channels. Each TDM port supports 32–128 channels. If 128 channels are needed, each
TDM port can be configured to support 32 channels. This example has two MII ports for
10/100 BaseT LAN connections. In all the examples, the SCC ports can be used for
management.
1.7.1.3 LAN-to-WAN Bridge Router
Figure 1-5 shows a LAN-to-WAN router configuration, which is similar to the previous
example.
MOTOROLA
Freescale Semiconductor, Inc.
MPC8280
TDM0
TDM3
10/100BaseT
10/100BaseT
2
SMC/I C/SPI/SCC
Chapter 1. Overview
For More Information On This Product,
Go to: www.freescale.com
Application Examples
SDRAM/DRAM/SRAM
60x Bus Channelized Data
(up to 128 channels)
1-15