Pioneer MJ-L7 Service Manual page 49

MJ-L7
= PDG202A: (IC4101: MD MAIN ASSY)
e System Micro-computer
@ Pin Function
. |Port Name Description . |Port Name | Name Description
G1/A1 Not used (Open) PA3/AN3 |SO. DATA System bus data output
G0/A0 PA4/AN4 | S. REQ System bus request input/output
NC Connected to +5V PA5/AN5 Not used (Open)
PEO/ECO/INTO System bus CLOCK input PA6/AN6 Key detection input (A/D input)
PE1(/EC1/INT1 MD display communication request PA7/AN7 Not used (Open)
input
AVss Connected to GND
RST XRESET Reset input
PE2/INT2 System control power off detection
input
PE3/INT3/NMI Doemstic/Overseas discrimination EXTAL EXTAL eae is) to Ceramic oscillator
input XTAL XTAL
PE4/RMC Not used (connected to +5V) Vss Connected to GND
PC1/KR1 |XRECMUTE MD Rec mute output PDO/A55
PC2/KR2 — Not used (Open) |
PD7/A48
cea PFO/A47
PC5/KR5 MD loading switch detection input Reese
PC6/KR6 MD mechanism control power off seas jas
oulput PG7/A32
PHO/A31
PBO/CINT MD mechanism control communication I
request detection input
PH7/A24
PB1/CSO MD CD search signal output A23
|
PB2/SCKO MD mechanism control communication A20
clock output
Not used (Open)
PC7/KR7 MD ST-ID control output
PB4/SO0 MD mechanism control communication A17
data output A16
G15/A15
I
PB6/SC1 Not used (Open)
G13/A13
PB7/SO1 MD display communication data Vdd Connected to +5V
PAO/ANO — Not used (Open) G9/A9
|
PA1/AN1 |XPBMUTE MD PB mute output G2/A2
PA2/AN2 | SI. DATA System bus data input
PB5/SCK1 MD display communication clock Not used (Open)
output
Not used (Open)
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