Sharp XE-A203 Service Manual - Page 9

Cpu Port - drawer

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3. CPU PORT PORT P00 P01 P02 P03 P04 P05 P06 P07 P10 P11 P12 P13 P14 P15 P16 P17 P20 P21 P22 P23 P24 P25 P26 P27 P30 P31 P32 P33 P34 P35 P36 P37 P40 P41 P42 P43 P44 P45 P46 P47 P50 P51 P52 P53 P54 P55 P56 P57 P60 P61 P62 P63 PIN No. 88 87 86 85 84 83 82 81 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 63 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 Pin name D0 D1 D2 D3 D4 D5 D6 D7 P10 P11 P12 P13 P14 P15 P16 P17 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 /CS0 /CS1 /CS2 /CS3 /WR /BHE /RD BCLK /HLDA /HOLD ALE /RDY P60 P61 P62 P63 Signal name I/O D0 I/O D1 I/O D2 I/O D3 I/O D4 I/O D5 I/O D6 I/O D7 I/O KST0 O KST1 O KST2 O KST3 O IN2 O IN1 O ENA2 O ENA1 O A0 O A1 O A2 O A3 O A4 O A5 O A6 O A7 O A8 O A9 O A10 O A11 O A12 O A13 O A14 O A15 O A16 O A17 O A18 O A19 O /CS0 O /CS1 O /CS2 O (NU) O /WR O (NU) O /RD O (NU) O (NU) O /EMP I (NU) O /RDY I DR1 O SD_CLK O SD_RXD I SD_TXD O Initial value H H H H H H H H L L L L L L L L H H H H H H H H H H H H H H H H H H H H H H H L H L H L L L L H H OFF MODE Out L Out L Out L Out L Out L Out L Out L Out L In In In In Out L Out L Out L Out L Out L Out L Out L Out L Out L Out L Out L Out L Out L Out L Out L Out L Out L Out L Out L Out L Out L Out L Out L Out L Out L Out L Out H Out L Out L Out L Out L Out L Out L In Out L In Out L Out L In Out L Function DATE BUS D0 DATE BUS D1 DATE BUS D2 DATE BUS D3 DATE BUS D4 DATE BUS D5 DATE BUS D6 DATE BUS D7 KEY DISPLAY (4 TO 16) KEY DISPLAY (4 TO 16) KEY DISPLAY (4 TO 16) KEY DISPLAY (4 TO 16) PAPER FEED MOTOR PAPER FEED MOTOR PAPER FEED MOTOR PAPER FEED MOTOR ADDRESS BUS A0 ADDRESS BUS A1 ADDRESS BUS A2 ADDRESS BUS A3 ADDRESS BUS A4 ADDRESS BUS A5 ADDRESS BUS A6 ADDRESS BUS A7 ADDRESS BUS A8 ADDRESS BUS A9 ADDRESS BUS A10 ADDRESS BUS A11 ADDRESS BUS A12 ADDRESS BUS A13 ADDRESS BUS A14 ADDRESS BUS A15 ADDRESS BUS A16 ADDRESS BUS A17 ADDRESS BUS A18 ADDRESS BUS A19 SEGMENT LATCH USB CONTROLLER SRAM UNUSED WRITE STROBE SIGNAL UNUSED READ STROBE SIGNAL UNUSED UNUSED UNUSED VCC PULL UP DRAWER DRIVE SIGNAL SD CLK SD RXD SD TXD XE-A203U/XE-A203A HARDWARE DESCRIPTION - 7 -

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XE-A203U/XE-A203A
HARDWARE DESCRIPTION
– 7 –
3.
CPU PORT
PORT
PIN No.
Pin name
Signal name
I/O
Initial value
OFF MODE
Function
P00
88
D0
D0
I/O
H
Out L
DATE BUS D0
P01
87
D1
D1
I/O
H
Out L
DATE BUS D1
P02
86
D2
D2
I/O
H
Out L
DATE BUS D2
P03
85
D3
D3
I/O
H
Out L
DATE BUS D3
P04
84
D4
D4
I/O
H
Out L
DATE BUS D4
P05
83
D5
D5
I/O
H
Out L
DATE BUS D5
P06
82
D6
D6
I/O
H
Out L
DATE BUS D6
P07
81
D7
D7
I/O
H
Out L
DATE BUS D7
P10
80
P10
KST0
O
L
In
KEY DISPLAY (4 TO 16)
P11
79
P11
KST1
O
L
In
KEY DISPLAY (4 TO 16)
P12
78
P12
KST2
O
L
In
KEY DISPLAY (4 TO 16)
P13
77
P13
KST3
O
L
In
KEY DISPLAY (4 TO 16)
P14
76
P14
IN2
O
L
Out L
PAPER FEED MOTOR
P15
75
P15
IN1
O
L
Out L
PAPER FEED MOTOR
P16
74
P16
ENA2
O
L
Out L
PAPER FEED MOTOR
P17
73
P17
ENA1
O
L
Out L
PAPER FEED MOTOR
P20
72
A0
A0
O
H
Out L
ADDRESS BUS A0
P21
71
A1
A1
O
H
Out L
ADDRESS BUS A1
P22
70
A2
A2
O
H
Out L
ADDRESS BUS A2
P23
69
A3
A3
O
H
Out L
ADDRESS BUS A3
P24
68
A4
A4
O
H
Out L
ADDRESS BUS A4
P25
67
A5
A5
O
H
Out L
ADDRESS BUS A5
P26
66
A6
A6
O
H
Out L
ADDRESS BUS A6
P27
65
A7
A7
O
H
Out L
ADDRESS BUS A7
P30
63
A8
A8
O
H
Out L
ADDRESS BUS A8
P31
61
A9
A9
O
H
Out L
ADDRESS BUS A9
P32
60
A10
A10
O
H
Out L
ADDRESS BUS A10
P33
59
A11
A11
O
H
Out L
ADDRESS BUS A11
P34
58
A12
A12
O
H
Out L
ADDRESS BUS A12
P35
57
A13
A13
O
H
Out L
ADDRESS BUS A13
P36
56
A14
A14
O
H
Out L
ADDRESS BUS A14
P37
55
A15
A15
O
H
Out L
ADDRESS BUS A15
P40
54
A16
A16
O
H
Out L
ADDRESS BUS A16
P41
53
A17
A17
O
H
Out L
ADDRESS BUS A17
P42
52
A18
A18
O
H
Out L
ADDRESS BUS A18
P43
51
A19
A19
O
H
Out L
ADDRESS BUS A19
P44
50
/CS0
/CS0
O
H
Out L
SEGMENT LATCH
P45
49
/CS1
/CS1
O
H
Out L
USB CONTROLLER
P46
48
/CS2
/CS2
O
H
Out H
SRAM
P47
47
/CS3
(NU)
O
L
Out L
UNUSED
P50
46
/WR
/WR
O
H
Out L
WRITE STROBE SIGNAL
P51
45
/BHE
(NU)
O
L
Out L
UNUSED
P52
44
/RD
/RD
O
H
Out L
READ STROBE SIGNAL
P53
43
BCLK
(NU)
O
L
Out L
UNUSED
P54
42
/HLDA
(NU)
O
L
Out L
UNUSED
P55
41
/HOLD
/EMP
I
-
In
P56
40
ALE
(NU)
O
L
Out L
UNUSED
P57
39
/RDY
/RDY
I
-
In
VCC PULL
UP
P60
38
P60
DR1
O
L
Out L
DRAWER DRIVE SIGNAL
P61
37
P61
SD_CLK
O
H
Out L
SD CLK
P62
36
P62
SD_RXD
I
-
In
SD RXD
P63
35
P63
SD_TXD
O
H
Out L
SD TXD