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MCF548x Reference Manual, Rev. 3

2-16 Freescale Semiconductor

2.2 MCF548x External Signals

2.2.1 FlexBus Signals

2.2.1.1 Address/Data Bus (AD[31:0])

The AD[31:0] bus carries address and data. The full 32-bit address is always driven on the first clock of a

bus cycle (address phase). The number of bytes used for data during the data phase is determined by the

port size associated with the matching chip select.

M16 VSS — ——AF8

E1COL PFEC1H4 — —

M23 VSS

— — — AF9 E0TXCLK PFEC0H7 — —

M24 EVDD — — — AF10 E0MDIO PFECI2C3 — —

M25 PCIAD12 — FBADDR12 — AF11 E0RXD3 PFEC0L3 — —

M26 PCIAD13 — FBADDR13 — AF12 E0RXD2 PFEC0L2 — —

N1 SDCLK0 — — — AF13 E0RXD1 PFEC0L1 — —

N2 SDCLK0 — ——AF14

USBCLKOUT — — —

N3 SDCS0 — ——AF15

USBCLKIN — — —

N4 SDDATA7 — ——AF16

USBD+ — — —

N11 VSS — ——AF17

USBD- — — —

N12 VSS — — — AF18 USBRBIAS — — —

N13 VSS — — — AF19 DREQ1 PDMA1 TIN1 IRQ1

N14 VSS — — — AF20 DREQ0 PDMA0 TIN0 —

N15 VSS — ——AF21TIN2PTIM5IRQ2CANRX1

N16 VSS — ——AF22TIN0 — — —

N23 PCIAD16 — FBADDR16 — AF23 PSC3CTS PPSC3PSC27 PSC3BCLK —

N24 PCIAD14 — FBADDR14 — AF24

E1RXD0 PFEC1H1 — —

N25 PCIAD17 — FBADDR17 — AF25 PSC1CTS PPSC1PSC07 PSC1BCLK —

N26 PCIAD15 — FBADDR15 — AF26 TOUT0 — — —

This pin is a “no connect” on the MCF5483 and MCF5482 devices.

This pin is a “no connect” on the MCF5481 and MCF5480 devices. On MCF5485, MCF5484, MCF5483, and MCF5482 device the pin

should be connected to the appriopriate power rail even is USB is not being used.

This pin is a “no connect” on the MCF5481 and MCF5480 devices.

Table 2-2. MCF5485/MCF5484 Signal Description by Pin Number (Continued)

PBGA Pin

Pin Functions

PBGA Pin

Pin Functions

Primary GPIO Secondary Tertiary Primary GPIO Secondary Tertiary

1 2 ... 81 82 83 84 85 86 87 88 89 90 91 ... 102 103

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