Freescale Semiconductor M9328MX21ADSE user manual DQM1EB1B, DQM0EB0B, Oeb

Support Information

		Table 3-3. CPU to Option Card PK1 Connector Signals
Pin(s)	Signal		Description
32	D13		DATA BIT 13 — Bidirectional data bit from the processor
33		D1	DATA BIT 1 — Bidirectional data bit from the processor
34	D14		DATA BIT 14 — Bidirectional data bit from the processor
35		D0	DATA BIT 0 — Bidirectional data bit from the processor
36	D15		DATA BIT 15 — Bidirectional data bit from the processor
37	DQM1_EB1_B		ENABLE BYTE 1 — D23-D16 for SDRAM, D15-D8 for other memory types
38	SDCLK		SDRAM CLOCK — Main clock signal to SDRAM devices
39	DQM0_EB0_B		ENABLE BYTE 0 — D31-D24 for SDRAM, D7-D0 for other memory types
40	A18		ADDRESS BIT 18 — Output line for addressing external devices
41	SDCKE0		SDRAM CLOCK ENABLE 0 — Active high outputs to SDRAM
42	A17		ADDRESS BIT 17 — Output line for addressing external devices
43	MA10		MULTIPLEXED ADDRESS BIT 1O — Multiplexed address bit to SDRAM
44	A10		ADDRESS BIT 10 — Output line for addressing external devices
46		A9	ADDRESS BIT 9 — Output line for addressing external devices
47	A16		ADDRESS BIT 16 — Output line for addressing external devices
48		A7	ADDRESS BIT 7 — Output line for addressing external devices
49	A14		ADDRESS BIT 14 — Output line for addressing external devices
50		A6	ADDRESS BIT 6 — Output line for addressing external devices
52		A8	ADDRESS BIT 8 — Output line for addressing external devices
53	A15		ADDRESS BIT 15 — Output line for addressing external devices
54		A11	ADDRESS BIT 11 — Output line for addressing external devices
55	A13		ADDRESS BIT 13 — Output line for addressing external devices
56, 59	P5V		Switched +5 VDC power
57	A12		ADDRESS BIT 12 — Output line for addressing external devices
58	OE_B		PCMCIA IO WRITE— Active low output for I/O writes*
		PC_IOWR
60	ECB_B		END CURRENT BURST — Active low input signal asserted by external burst devices

*The signal name in italics is the function intended for operation with this connector. It is multiplexed inside the i.MX21 processor with the listed signal.

	M9328MX21ADSE User’s Manual, Rev. A
3-14	Freescale Semiconductor