Pioneer DEH-P90HDD Service Manual page 123

- Pin Functions(PD3428A)
Pin No. Pin Name
1-9 DB7-15
10 GND
11 XIN
12 XOUT
13 VCC5
14 CKSEL
15 IR
16 CS1
17 CS0B
18 WRB
19 RDB
20 BCLK
21 GND
22 RDYB
23 CSOUT
24 CKD
25 CKA
26 VCC5
27 LS
28,29 ADL0,1
30,31 ADR0,1
32 CDL
33 CDR
34-37 NC
38,39 VCC3
40 NC
41,42 GND
43 TESTRAM
44 TESTSEL0
45 TESTSEL1
46 SCANSEL
47 OBKSEL
48-54 NC
55 RB
56 GND
57 DB0
58 VCC5
59-64 DB1-6
* PD3428A
32
17
I/O Function and Operation
I/O Data bus IO
Ground
Input of oscillation buffer
Output of oscillation buffer
Power supply (5V, for X'tal pad)
I Input for selection of system clock
I Input for selection of instruction resistor
I Input of CPU CS1
I Input of CPU CS0B
I Input of CPU write strobe
I Input of CPU read strobe
I Input of CPU bus clock
Ground
O Output of ready signals
O Output for of external chip selection
O Output of transfer clock of serial data
O Output of drive clock of positive pole
Power supply (5V, for I/O)
O Output of line synchronization signals
O Output of serial data of positive pole 0,1(for column 0 - 127)
O Output of serial data of positive pole 0,1(for column 128 - 255)
O Output of serial data of negative pole (for left TAB)
O Output of serial data of negative pole (for right TAB)
Not used
Power supply (3V, for 3.3V core)
Not used
Ground
I Input of settings of macro test mode of internal RAM
I Input of settings of display test pattern 0
I Input of settings of display test pattern 1
I Input for selection of vertical display size of display test
I Input for selection of ghost refresh rate of display test
Not used
I Input of reset
Ground
I/O Data bus IO
Power supply (5V, for I/O)
I/O Data bus IO
49
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DEH-P90HDD,P900HDD
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