DIL/NetPC DNP/5280: Expansion Bus Mapping

Most of the 8-bit Expansion Bus pins of the DNP/5280 are direct connected to signals of the Motorola 32-bit MCF5280 microcontroller. The following table shows the mapping and the remarks.

DNP/5280 Expansion Bus Mapping
Pin	Name	Function	MCF5280 Signal	MCF5280 Pin	Remarks
40	INT5	Interrupt Input 5	IRQ7	B15	-
41	INT4	Interrupt Input 4	IRQ6	B16	-
42	INT3	Interrupt Input 3	IRQ5	C14	-
43	INT2	Interrupt Input 2	IRQ4	C15	-
44	INT1	Interrupt Input 1	IRQ3	C16	-
45	CS4	Chip Select Output 4	RAS1#	H13	See Device Errata
46	CS3	Chip Select Output 3	CS3#	L16	-
47	CS2	Chip Select Output 2	CS2#	L15	-
48	CS1	Chip Select Output 1	CS1#	L14	-
49	RDY	External Ready Input	TA#	P16	-
50	RD	Read Signal	OE#	N16	Also on-board use
51	WR	Write Signal	R/W#	N15	Also on-board use
52	SA3	Address Bit 3	A3	E3	Also on-board use
53	SA2	Address Bit 2	A2	E4	Also on-board use
54	SA1	Address Bit 1	A1	F1	Also on-board use
55	SA0	Address Bit 0	A0	F2	Also on-board use
56	SD7	Data Bit 7	D31	F3	Also on-board use
57	SD6	Data Bit 6	D30	G1	Also on-board use
58	SD5	Data Bit 5	D29	G2	Also on-board use
59	SD4	Data Bit 4	D28	G3	Also on-board use
60	SD3	Data Bit 3	D27	G4	Also on-board use
61	SD2	Data Bit 2	D26	H1	Also on-board use
62	SD1	Data Bit 1	D25	H2	Also on-board use
63	SD0	Data Bit 0	D24	H3	Also on-board use