FV-DB1E (serv.man3) - Sharp Audio Service Manual (repair manual). Page 20

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FV-DB1E
7 – 4
IC401 RH-iXA021SJZZ: System Microcomputer (IXA021SJ) (2/2)
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Pin No.
Port Name
Terminal Name
Input/Output
Function
53
P64/RD
DIMMER_1
Output
DIMMER_1 control output.
54
P65/WR
DIMMER_2
Output
DIMMER_2 control output.
55*
P66/WAIT
NO USE
Not used. (fixed to Low as output pin.)
56
P67/ASTB
TIMER_LED
Output
TIMER LED control output. “H”: TIMER ON  “L”: TIMER OFF
57*
P40/AD0
NO USE
Not used. (fixed to Low as output pin.)
58*
P41/AD1
NO USE
Not used. (fixed to Low as output pin.)
59*
P42/AD2
NO USE
Not used. (fixed to Low as output pin.)
60*
P43/AD3
NO USE
Not used. (fixed to Low as output pin.)
61*
P44/AD4
NO USE
Not used. (fixed to Low as output pin.)
62*
P45/AD5
NO USE
Not used. (fixed to Low as output pin.)
63*
P46/AD6
NO USE
Not used. (fixed to Low as output pin.)
64*
P47/AD7
NO USE
Not used. (fixed to Low as output pin.)
A_MUTE
1
2 P51/A9
P50/A8
PLL_CE
3 P52/A10
VOL_CE
4 P53/A11
LINE_MUTE
5 P54/A12
DAB
6 P55/A13
DAB POWER
7 P56/A14
8 P57/A15
VSS0
9 VSS0
VDD0
10 VDD0
11 P30
12 P31
13 P32/SDA0
14 P33/SCL0
TX
15 P34/SI3/TxD2
RX
16 P35/S03/RxD2
SCK
17
P36/SCK3/ ASCK2
DO
18
P20/SI1
DI
19
P21/S01
CLK
20
P22/SCK1
S1_DIN
21
P23/RxD0
S1_DOUT
22
P24/TxD0
SCP_CLK
23
P25/ASCK0
VDDI
24
VDD1
AVSS
25
AVSS
26
P17/ANI7
27
P16/ANI6
28
P15/ANI5
29
P14/ANI4
30
P13/ANI3
AD2
31
P12/ANI2
AD1
32
P11/ANI1
48
STB
47
P70/TI000/
T000
46
P03/INTP3/
ADTRG
P_SUPPLY
45
P02/INTP2
PON_DET
44
P01/INTP1
PWR_DET
43
P00/INTP0
VSS1
42
VSS1
X1
41
X1
X2
40
X2
IC(VPP)
39
IC(VPP)
XT1
38
XT1
XT2
37
XT2
RESET
36
RESET
35
P80/SS1
AV_REF
34
AVREF
ADO
33
P10/ANI0
64
P47/AD7
63
P46/AD6
62
P45/AD5
61
P44/AD4
60
P43/AD3
59
P42/AD2
58
P41/AD1
57
P40/AD0
TIMER_LED
56
P67/ASTB
55
P66/WAIT
DIMMER_2
54
P65/WR
DIMMER_1
53
P64/RD
BUZ
52
P75/BUZ/TI001/T001
51
P74/PCL/TI011
50
P73/TI51/T051
49
P72/TI50/
T050
P71/TI010
IXA021SJ
Figure 7-4 BLOCK DIAGRAM OF IC
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