Ieee Std. 802.11N Wlan Access Point - Freescale Semiconductor MPC8313E Family Reference Manual

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IEEE Std. 802.11n WLAN Access Point

illustrates the MPC8313E acting as an IEEE Std. 802.11n® WLAN access point.

2x RGMII, 2x RTBI, 2x MII, 2x RMII

Figure 1-9. MPC8313E as a WLAN Access Point

Current systems are being designed for IEEE Std. 802.11b® and 802.11a/g® as well as combo radios. The

WiFi chipsets are on PCI in current systems. With the migration to IEEE 802.11n standard and the

increased management features required by the IT community, the need for higher performance is

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.

Integrated SGMII makes it possible to connect to low power Gigabit Ethernet PHYs. Power is a main

consideration for WAPs deployed throughout the premise. Power is drawn from the AC outlet in the wall

or power over Ethernet. Having an SGMII interface on the Gigabit Ethernet PHYs enables low overall

power consumption. The MPC8313E also has superior PCI to memory performance.

MPC8313E PowerQUICC II Pro Integrated Processor Family Reference Manual, Rev. 3

Freescale Semiconductor

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