Motorola M68EZ328ADS Single Tone Generator, Logic Analyzer Interface, Expansion Connectors

Freescale Semiconductor, Inc.

Hardware Description and Board Operation

3.10 SINGLE TONE GENERATOR

VCC

ARCHIVED BYS1-5FREESCALE SEMICONDUCTOR, INC. 2005

PWMO

MC68VZ328

BC847

CitiSound CHB-03E

GND

Freescale Semiconductor, Inc.

Figure 3-10. Single Tone Generator

2005	Citizen single tone generator CHB-03E is provided on M68EZ328ADS v2.0. As shown in
INC.	Figure 3-10,a simple transistor circuit is used to interface the CHB-03E with the PWMO pin
	of MC68EZ328.
SEMICONDUCTOR,	3.11 LOGIC ANALYZER INTERFACE
	To provide an convenient way of connecting on-board signals to a logic analyzer, ADS board
	provides five 10x2-pin headers for direct plug-in. Pin assignments to these five headers are
FREESCALE	shown in Figure 3-11.
	D10	9	10	D9		LWE	9	10	DTACK	RAS1	9	10	CAS0	A10	9	10	A9
		POD3					POD2				POD1				POD4
		1	2				1	2			1	2			1	2
	CLKO	3	4	D15		EMUCS	3	4	EMUIRQ	CSA0	3	4	CSA0	DTACK	3	4	A15
	D14	5	6	D13		RSTIN	5	6	OE	CSA1	5	6	CSB0	A14	5	6	A13
	D12	7	8	D11		EMUCS	7	8	UWE	CSB1	7	8	RAS0	A12	7	8	A11
BY	D8	11 12		D7	CONTRAST		11 12		LACD	CAS1	11 12		A23	A8	11 12		A7
	D6	13 14		D5		LCLK	13 14		LLP	A22	13 14		A21	A6	13 14		A5
ARCHIVED	D4	15 16		D3		LFRM	15 16		LD3	A20	15 16		A19	A4	15 16		A3
	D2	17 18		D1		LD2	17 18		LD1	A18	17 18		A17	A2	17 18		A1
	D0	19 20		GND		LD0	19 20		GND	A16	19 20		GND	A0	19 20		GND

Figure 3-11. Logic Analyzer Connectors

3.12 EXPANSION CONNECTORS

The M68EZ328ADS v2.0 provides basic features for software development and evaluation. If user wants to add application subsystem to M68EZ328ADS v2.0, it can utilize the signals provided on 32x3 local bus connector (P4). Some of these MC68EZ328 signals are used by the on-board modules. If users want to use any of these signals for their daughter card, the corresponding on-board module may have to be disabled to avoid contention.

The pin assignments for extension connectors are shown in Table 3-7.

3-25M68EZ328ADS v2.0 USER’S MANUALMOTOROLA

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