Manual - Pioneer DEH-P720 Service Manual

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- Pin Functions (PD5554A)
Pin No. Pin Name
1–4 NC
5 REM
6 BYTE
7 CNVSS
8,9 NC
reset
10
11 XOUT
12 VSS
13 XIN
14 VDD
nmi
15
16 NC
17–20 KD1-4
21–26 KS1-6
27–31 NC
32 ILMD
33 KYDT
34 DPDT
35 NC
36 OEL
rdy
37
38 NC
hold
39
40 NC
41 BCLK
rd
42
TE
L 13942296513
43 NC
wr
44
45 NC
46 CS2
47 CS1
48 CS0
49–59 A19-9
60 VDD
61 A8
62 VSS
63–70 A7-0
71–86 D15-0
87–93 NC
94 AVSS
95 NC
96 VREF
97 AVCC
98–100 NC
*PD5554A
100
1
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25
26
http://www.xiaoyu163.com
I/O Format
I
I
I
O
I
I
I
I/O
O C
O C
I
O C
I
I
O C
O C
O C
O C
O C
O C
O C
O C
O C
I/O
76
75
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51
50
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2 9
8
Function and Operation
Not used
Remote control reception
VCC joint
GND
Not used
Reset
Crystal oscillating element connection pin
GND
Crystal oscillating element connection pin
Power voltage
Pull up
Not used
Key data 1-4
Key strobe input/output 1-6
Not used
Dual illumination
Key data output
Display data input
Not used
OEL controller ON
OEL controller READY
Not used
Pull up
Not used
Bus clock
Read strobe
Q Q
3 6 7 1 3 1 5
Not used
Write strobe
Not used
Bunk address (High)
Bank address (Low)
External ROM chip select
Address bus 19-9
Power voltage
Address bus 8
GND
Address bus 7-0
Data bus 15-0
Not used
Connect to VSS
Not used
Connect to VSS
Connect to VCC
Not used
Format
C
co
.
DEH-P720,P7200
9 4 2 8
0 5 8 2 9 9 4 2 8
Meaning
C MOS
m
9 9
9 9
65