Motorola M68EZ328ADS - Manual (Page 26)

Hardware Description and Board Operation
3-25 M68EZ328ADS v2.0 USER’S MANUAL MOTOROLA
3.10 SINGLE TONE GENERATOR
Citizen single tone generator CHB-03E is provided on M68EZ328ADS v2.0. As shown in
Figure 3-10, a simple transistor circuit is used to interface the CHB-03E with the PWMO pin
of MC68EZ328.
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
shown in Figure 3-11.
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.
Figure 3-10. Single Tone Generator
VCC
GND
S1-5
MC68VZ328
PWMO
CitiSound CHB-03E
BC847
A14
A12
A10
A8
A6
A4
A2
A0
A15
A13
A11
A9
A7
A5
A3
A1
GND
CSA1
CSB1
RAS1
CAS1
A22
A20
A18
A16
CSA0
CSB0
RAS0
CAS0
A23
A21
A19
A17
GND CLKO
D14
D12
D10
D8
D6
D4
D2
D0
D15
D13
D11
D9
D7
D5
D3
D1
GND
RSTIN
EMUCS
LWE
CONTRAST
LCLK
LFRM
LD2
LD0
EMUIRQ
OE
UWE
DTACK
LACD
LLP
LD3
LD1
GND
1
3
5
7
9
11
13
15
17
19 2
4
6
8
10
12
14
16
18
20
1
3
5
7
9
11
13
15
17
19 2
4
6
8
10
12
14
16
18
20
1
3
5
7
9
11
13
15
17
19 2
4
6
8
10
12
14
16
18
20
1
3
5
7
9
11
13
15
17
19 2
4
6
8
10
12
14
16
18
20
EMUCS CSA0 DTACK
POD1 POD2 POD3 POD4
Figure 3-11. Logic Analyzer Connectors
Freescale Semiconductor, I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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ARCHIVED BY FREESCALE SEMICONDUCTOR, INC. 2005
ARCHIVED BY FREESCALE SEMICONDUCT
OR,
INC.
2005