Information

MPC8308 Product Brief PowerQUICC
™
II Pro Processor, Rev. 0
Features
Freescale Semiconductor6
1.4 IEEE Std 802.11 n ™ WLAN Access Point
Figure 5 illustrates the MPC8308 acting as an IEEE 802.11n WLAN access point.
Figure 5. MPC8308 as a WLAN Access Point
Current systems are being designed for IEEE 802.11 a/b/g/n as well as combo radios. The WiFi chipsets
are on PCI-Express bus in current systems. With the requirement of streaming video and other increased
management features required by the IT community, there is a need for higher performance.
These WLAN access points (WAPs) require low power and are usually powered exclusively by Power
over Ethernet (POE). Each Ethernet line can power about 12 W. With the power the radios draw and the
rest of the board this usually only leaves < 2.5 W for the embedded processor.
2Features
The MPC8308 incorporates the e300 (MPC603e-based) core, which includes 16 Kbytes of L1 instruction
and data caches, on-chip memory management units (MMUs), and floating-point support.
In addition to the e300 core, the SoC platform includes features such as a dual enhanced three-speed 10,
100, 1000 Mbps Ethernet controllers (eTSECs) with IEEE 1588 support, a 32- or 16-bit DDR2 SDRAM
memory controller, and a high degree of software compatibility with previous-generation PowerQUICC
processor-based designs for backward compatibility and easier software migration. The MPC8308 also
offers peripheral interfaces such as 16-bit enhanced local bus interface with up to 66-MHz operation,
SDHC, and USB 2.0 controller.
The MPC8308 offers additional high speed interconnect support with single-lane PCI Express interface.