Pioneer DEH-P945R Service Manual page 91

- Pin Functions (PD6237B)
Pin No. Pin Name
1-9 NC
10 RDX
11 VSS
12 WRX
13-18 NC
19 KYDT
20 DPDT
21 SCDCLK
22 DATAOT
23 Vcc
24 DATAIN
25,26 NC
27 C
28-33 NC
34 AVcc
35,36 NC
37 AVSS
38 ILM1
39 ILM2
40,41 NC
42 GND
43-48 NC
49 MD0
50 MD1
51 MD2
52 HSTX
53 REMIN
54-58 NC
59-62 KST0-KST3
63,64 NC
65 RES1
66 RES2
67-70 KDT0-KDT3
71-73 NC
74 OSCK4K
75-77 NC
78 CS1
79 CS2
80 CS3
81 VSS
82,83 X0,X1
84 Vcc
85-92 AD00-AD07
92 AD07
93 A0
94-100 NC
*PD6237B
100
1
30
31
I/O Format Function and Operation
Not used
O C Address bus read strobe output
O C Digital GND
O C Address bus write strobe output
Not used
O C Key data to system micro-computer
I Display data from system micro-computer
I Test program clock
O C Test program data
Digital GND
I Test program data
Not used
Reference voltage
Not used
Analog power supply
Not used
Analog GND
O C Illumination control output 1
O C Illumination control output 2
Not used
Digital GND
Not used
I Mode pin 0 (PULL-UP)
I Mode pin 1 (PULL-UP)
I Mode pin 2 (PULL-DOWN)
I Hardware standby input (PULL-UP)
I Remote control pulse input
Not used
O C Key scan output
Not used
O C SED1450 Reset output
O C SED1526 Reset output
I C Key data input
Not used
O C SED1540 Clock output
Not used
O C SED1526 Top lank chip select output
O C SED1526 Bottom lank chip select output
O C SED1540 chip select output
Digital GND
Oscillation circuit
Digital power supply
I/O C External data bus input/output
I/O C External data bus input/output
O C External address output
Not used
81
80
51
50
DEH-P945R,DEX-P99R
Format Meaning
C C MOS
N N channel open drain
91