Pioneer HTZ-7 Service Manual page 102

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HTZ-7, HTZ-C7, HTZ-SW7, HTZ-ST7
PDG251A (IC5501: MOTHER ASSY)
System Micro-computer (for AV center)
Pin Function
No.
Symbol
Name
1
G1/A1
–––––
2
G0/A0
–––––
3
NC
–––––
4
PE0/INT0/EC0
–––––
5
PE1/INT1/EC1
–––––
6
PE2/INT2
–––––
7
PE3/INT3/NM1
–––––
8
PE4/RMC
SR_IN
9
PE5
TEST_MODE
10
PE6/PWM
AUDIOSW_STAT3
11
PE7/TO/ADJ
AUDIOSW_STAT1
12
PC0/KR0
AUDIOSW_STAT2
13
PC1/KR1
AUDIOSW_DATA
14
PC2/KR2
AUDIOSW_CLK
15
PC3/KR3
–––––
16
PC4/KR4
SYSBUS_DI
17
PC5/KR5
SYSBUS_DO
18
PC6/KR6
SYSBUS_REQ
19
PC7/KR7
SYSBUS_CLK
20
PB0/CINT
DVD_XRDY
21
PB1/CS0
DVD_LT1
22
PB2/SCK0
DVD_XSCK
23
PB3/SI0
DVD_SI
24
PB4/SO0
DVD_SO
25
PB5/SCK1
DISP_CLK
26
PB6/SI1
DISP_REQ_MD
27
PB7/SO1
DISP_DATA
28
PI0
–––––
29
PA0/AN0
KEY_IN
30
PA1/AN1
SLEEP
31
PA2/AN2
FAN DET
32
PA3/AN3
3.3V DET
33
PA4/AN4
34
PA5/AN5
AD_OVL
35
PA6/AN6
AV_5.6V
36
PA7/AN7
XSTEREO/TUNED
37
PI1
–––––
38
RST
–––––
39
EXTAL
–––––
40
XTAL
–––––
41
Vss
–––––
42
PI2/TX
–––––
43
PI3/TEX
–––––
44
VDD
–––––
45
Vfdp
–––––
46
PD0/A55
TX_DI (OUT)
47
PD1/A54
TX_CLOCK
48
PD2/A53
TX_CE
49
PD3/A52
TX_MUTE
102
I/O
OUT
––––––––––
OUT
––––––––––
––
––––––––––
IN
––––––––––
IN
––––––––––
IN
––––––––––
IN
––––––––––
IN
SR input
IN
Test mode when this port is "L" at the time of power ON
OUT
AV switching strobe 3 (DIGITAL system)
OUT
AV switching strobe (AUDIO system)
OUT
AV switching strobe 2 (VIDEO system)
OUT
Function switching IC data
OUT
Function switching IC clock
OUT
––––––––––
IN
System bus data input [ for ID (priority) confirmation ]
IN/OUT
System bus data I/O (input except at the time of transmission)
IN/OUT
System bus REQ I/O (input except at the time of transmission)
OUT
System bus CLK output (always communication master)
OUT
DVD-READY
IN
DVD latch
OUT
DVD serial data CLK
IN
DVD serial data IN
OUT
DVD serial data OUT
OUT
Display communication transmission clock output
OUT
Display communication REQ to MD
OUT
Display communication transmission data output
IN
––––––––––
IN
AD input for main unit key input
IN
AD input for confirmation of microcomputer power supply 5.6 V DOWN (for backup)
IN
AD input for confirmation of heat dissipation fan operation
IN
AD input for confirmation of DVD power supply 3.3 V DOWN (for sag correspondence)
MS1
IN
AD input for destination switching, 0: J/1: KU
IN
AD input overload detection AD input
IN
AD input for confirmation of AV center 5.0 V power supply DOWN
IN
ADL for TUNER stereo reception OK/reception OK
––
GND
––
Reset
––
Oscillator 16 MHz
––
Oscillator 16 MHz
––
GND
––
GND
––
GND
––
5V
––
GND
OUT
TUNER data output
OUT
TUNER clock output
OUT
TUNER CE output
OUT
TUNER mute output
Description

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