Pioneer XC-F10 Service Manual page 38

XC-F10
QQ
3 7 63 1515 0
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1 : Change of function. The truth value table of BU4052BCF.
A B Switch turned on
L L
H L
L H
H H
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2 : The truth value table of Expander IC (BU4094BCF / M-F10 COMPLEX ASSY IC5801).
Function Name Port Kind
OE
ACRY
SPRY
XMUTE
IND
HPPOW
WF1*
WF2*
*
3 : The truth value table of PLAY LED brightness.
Brightness DISCLED
OFF L
LOW L
MID L
HIGH H
PD5601A (DISP UNIT : IC5652)
• 4 Bit Single Chip Microcomputer
•
Pin Assignment
TE
L 13942296513 VSS
E2
E1
XIN
XOUT
E0
G0
G2
G3
G4
•
Pin Function
NO. PIN NAME
1 VSS
2 E2 Trigger input for buzzer
3 E1
4 X IN 3.84MHz Oscillation Connection
5 X OUT 3.84MHz Oscillation Connection
6 E0 buzzer ON/OFF input
7 G0
8 G1
9 G2
10 G3
11 D7 Signal switch output
12 D6 Remote control output without carrier
13 D5
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14 D4
15 D3
16 D2
17 D1
.
18 D0
19 CARR Remote control output with carrier
20 VDD 3V Power supply
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Function
X0, Y0 CD
X1, Y1 AUX
X2, Y2 PB
X3, Y3 TX
Active
C-MOS H
C-MOS H
C-MOS H
C-MOS L
C-MOS H
C-MOS (Not used)
C-MOS L
C-MOS L
LEDDIMA LEDDIMB
L L
L H
H L
L L
1 20 VDD
2 19 CARR
D0
3 18
4 17 D1
5 16 D2
6 15 D3
D4
7 14
8 13 D5
9 12 D6
D7
10 11
FUNCTION I/O
GND –
I
Buzzer output O
I
O
I
KEY input 1 I
KEY input 2 I
KEY input 3 I
KEY input 4 I
O
O
KEY output O
KEY output O
KEY output O
x ao
y
KEY output O
KEY output O
i
KEY output O
O
–
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8
*
Woofer Level
HIGH
MID
LOW
Q Q
3 6 7 1 3
PULL DOWN ACT at SLEEP
––– – –––––
Software H
Software H
––– – –––––
––– – –––––
Software H Input interception
Software H
Software H
Software H
Software H
Software H
External L H output
––– H H output
––– H H output
––– H H output
u163
––– H H output
––– H H output
.
––– H H output
––– H L output
––– – –––––
2 9 9 4 2 8
WF1 WF2
H
H
L
1 5 0 5 8 2 9 9 4
NOTE
I Pull down ON always
I Pull down ON always
Pull down OFF at SLEEP
I
I
I
I
I
m
co
9 9
H
L
H
2 8 9 9