Pioneer KEH-P8800R/EW Service Manual page 59

BR9010FV
NC
1
VCC
2
CS : Chip select input
SK : Serial data clock input
DI : Serial data input
DO : Serial data output
CS
3
WC : Write control input
SK
4
- Pin Functions (PD5471A)
Pin No. Pin Name
1–4 NC
5 REM
6 BYTE
7 CNVSS
8,9 NC
10 RESET
11 XOUT
12 VSS
13 XIN
14 VDD
nmi
15
16 NC
kd1-4
17–20
ks1-6
21–26
27–31 NC
32 ILMD
33 KYDT
34 DPDT
35 NC
36 OEL
rdy
37
38 NC
hold
39
40,41 NC
rd
42
bhe
43
wr
44
45 NC
cs2
46
cs1
47
cs0
48
49–59 A19-9
60 VDD
61 A8
62 VSS
63–70 A7-0
71–86 D15-0
87–100 NC
WC
8
GND
7
DO
6
DI
5
I/O Format Function and Operation
Not used
I Remote control reception
I External data BUS width select input
I Processor mode select input
Not used
I Reset input
O Crystal oscillating element connection pin
GND
I Crystal oscillating element connection pin
VDD
I NMI input
Not used
I Key data 1-4
I/O Key strobe input/output 1-6
Not used
O C Dual illumination
O C Key data output
I Display data input
Not used
O C OEL controller ON
I OEL controller ready input
Not used
I Hold input
Not used
O C Read strobe
O C Write High byte enable
O C Write strobe
Not used
O C Bank address (High)
O C Bank address (Low)
O C External ROM chip select
O C Address bus Output 19bit-9bit
VDD
O C Address bus Output 8bit
GND
O C Address bus Output 7bit-0bit
I/O Data bus 15bit-0bit
Not used
KEH-P8800R,P8800R-W,P8850
*PD5471A
51
75
Format Meaning
C C MOS
25
1
59