Sharp XE-A303 (serv.man4) Service Manual ▷ View online
XE-A303 (V)
HARDWARE DESCRIPTION
– 6 –
When IPL: Memory expansion mode (1MByte mode, PM13=0)
For the physical address of the external RAM, refer to the descriptions
on the normal operation.
(The external RAM can be seen similarly in the normal operation mode
and in the IPL mode.)
and in the IPL mode.)
4. CPU PORT
4-1. CPU PORT LIST
00000h SFR
00400h Internal RAM 12KByte
(00400h-033FFh)
033FFh
03400h
03400h
04000h POPUP Display 04000h /CS3 16K
Front Display 04001h
08000h External RAM
External RAM
External ROM
/CS2 124K
124KByte/512KByte
27000h
28000h USB /CS1
96K
Controller
30000h
/CS0 640K
40000h
512KByte
(256KByte
(256KByte
u
2Bank)
80000h 80000h
(00000h) (40000h)
512KByte
External
ROM
ROM
External
ROM
ROM
(256KByte
u
2Bank)
BFFFFh (3FFFFh) (7FFFFh)
C0000h
ROM
BANK=0
BANK=0
ROM
BANK=1
BANK=1
D0000h Internal ROM 192KByte
(D0000h-FFFFFh)
FFFFFh
Physical adress
are in parentheses.
are in parentheses.
PORT
PIN No.
I/O
PIN NAME
SIGNAL NAME
INTIAL VALUE
OFF MODE
FUNCTION
P00
111
I
P0_0/D0
D0
L
Out L
DATA BUS
P01
110
I
P0_1/D1
D1
L
Out L
DATA BUS
P02
109
I
P0_2/D2
D2
L
Out L
DATA BUS
P03
108
I
P0_3/D3
D3
L
Out L
DATA BUS
P04
107
I
P0_4/D4
D4
L
Out L
DATA BUS
P05
106
I
P0_5/D5
D5
L
Out L
DATA BUS
P06
105
I
P0_6/D6
D6
L
Out L
DATA BUS
P07
104
I
P0_7/D7
D7
L
Out L
DATA BUS
P10
103
O
P1_0/D8
I01
H
In
PRINTER MOTOR DRIVE
P11
102
O
P1_1/D9
I00
H
In
PRINTER MOTOR DRIVE
P12
101
O
P1_2/D10
PH02
L
Out L
PRINTER MOTOR DRIVE
P13
100
O
P1_3/D11
PH01
L
Out L
PRINTER MOTOR DRIVE
P14
99
O
P1_4/D12
PH12
L
Out L
PRINTER MOTOR DRIVE
P15
98
O
P1_5/D13/#INT3
PH11
L
Out L
PRINTER MOTOR DRIVE
P16
97
O
P1_6/D14/#INT4
I11
H
In
PRINTER MOTOR DRIVE
P17
96
O
P1_7/D15/#INT5
I10
H
In
PRINTER MOTOR DRIVE
P20
95
O
P2_0/A0
A0
H
Out L
ADDRESS BUS
P21
94
O
P2_1/A1
A1
H
Out L
ADDRESS BUS
P22
93
O
P2_2/A2
A2
H
Out L
ADDRESS BUS
P23
92
O
P2_3/A3
A3
H
Out L
ADDRESS BUS
P24
91
O
P2_4/A4
A4
H
Out L
ADDRESS BUS
XE-A303 (V)
HARDWARE DESCRIPTION
– 7 –
P25
90
O
P2_5/A5
A5
H
Out L
ADDRESS BUS
P26
89
O
P2_6/A6
A6
H
Out L
ADDRESS BUS
P27
88
O
P2_7/A7
A7
H
Out L
ADDRESS BUS
P30
86
O
P3_0/A8
A8
H
Out L
ADDRESS BUS
P31
79
O
P3_1/A9
A9
H
Out L
ADDRESS BUS
P32
78
O
P3_2/A10
A10
H
Out L
ADDRESS BUS
P33
77
O
P3_3/A11
A11
H
Out L
ADDRESS BUS
P34
76
O
P3_4/A12
A12
H
Out L
ADDRESS BUS
P35
75
O
P3_5/A13
A13
H
Out L
ADDRESS BUS
P36
74
O
P3_6/A14
A14
H
Out L
ADDRESS BUS
P37
73
O
P3_7/A15
A15
H
Out L
ADDRESS BUS
P40
72
O
P4_0/A16
A16
H
Out L
ADDRESS BUS
P41
71
O
P4_1/A17
A17
H
Out L
ADDRESS BUS
P42
70
O
P4_2/A18
A18
H
Out L
ADDRESS BUS
P43
69
O
P4_3/A19
A19
H
Out L
ADDRESS BUS
P44
68
O
P4_4/#CS0
#CS0
H
Out H
P45
67
O
P4_5/#CS1
#CS1
H
Out L
P46
66
O
P4_6/#CS2
#CS2
H
Out H
P47
65
O
P4_7/#CS3
#CS3
H
Out L
P50
61
O
P5_0/#WRL/#WR
#WR
H
Out L
WRITE
P51
60
O
P5_1/#WRH/#BHE
KISYU
L
Out L
P52
59
O
P5_2/#RD
#RD
H
Out L
READ
P53
58
O
P5_3/BCLK
BCLK
H
Out H
MONITOR
P54
53
O
P5_4/#HLDA
#HLDA
L
Out L
P55
52
I
P5_5/#HOLD
#EPM
In
P56
51
O
P5_6/ALE
ALE
L
Out L
P57
50
I
P5_7/#RDY/
CLKOUT
#RDY
In
P60
45
O
P6_0/#CTS0/#RTS0
PESON
L
Out L
PAPER END SENSOR ON/OFF
P61
44
O
P6_1/CLK0
PCLK0
L
Out L
DATA TRANSMISSION CLOCK
P62
43
O
P6_2/RXD0/SCL0
VHCOM0
L
Out L
HEAD VOLTAGE ON
P63
42
O
P6_3/TXD0/SDA0
PDAT0
L
Out L
PRINT DATA
P64
41
I
P6_4/#CTS1/#RTS1/
#CTS0/CLKS1
BUSY
In
V4/V6 DISCRIMINATE
(V4 = L / V7 = H)
(V4 = L / V7 = H)
P65
40
O
P6_5/CLK1
SCLK
H
Out L
D/B
P66
38
I
P6_6/RXD1/SCL1
RXD
Out L
D/B
P67
36
O
P6_7/TXD1/SDA1
TXD
H
Out L
D/B
P70
35
O
P7_0/TXD2/SDA2
#TA0OUT
PDAT1
L
Out L
PRINT DATA
P71
34
O
P7_1/RXD2/SCL2/
TA0IN/#TB5IN
VHCOM1
L
Out L
HEAD VOLTAGE ON
P72
33
O
P7_2/CLK2/TA1OUT/
V
PCLK1
L
Out L
DATA TRANSMISSION CLOCK
P73
32
O
P7_3/#CTS2/#RTS2/
TA1IN/# V
LCDCS#
H
Out L
LCD SELECT
P74
31
I
P7_4/TA2OUT/W
HUS0
In
HEAD UP SENSOR
P75
30
I
P7_5/TA2IN/#W
HUS1
In
HEAD UP SENSOR
P76
29
I
P7_6/TA3OUT
PES0
In
PAPER END SENSOR
P77
28
I
P7_7/TA3IN
PES1
In
PAPER END SENSOR
P80
27
O
P8_0/TA4OUT/U
BUZZER
L
Out L
BUZZER DRIVE
P81
26
O
P8_1/TA4IN/#U
RESUSB#
L
Out L
USB CONTROLLER RESET
P82
25
I
P8_2/#INT0
POFF#
In
POFF SIGNAL
P83
24
I
P8_3/#INT1
DREQUSB#
In
DREQ USB
P84
23
I
P8_4/#INT2/ZP
INTUSB#
In
INTERRUPT USB
P85
22
I
P8_5/#MNI
NMI#
In
P86
16
I
P8_6/XCOUT
XCOUT
In
SUB CLOCK
P87
15
I
P8_7/XCIN
XCIN
In
SUB CLOCK
P90
10
I
P9_0/TB0IN/CLK3
KR0
Out L
KEY RETURN SIGNAL
P91
9
I
P9_1/TB1IN/SIN3
KR1
Out L
KEY RETURN SIGNAL
P92
8
I
P9_2/TB2IN/SOUT3
KR2
Out L
KEY RETURN SIGNAL
PORT
PIN No.
I/O
PIN NAME
SIGNAL NAME
INTIAL VALUE
OFF MODE
FUNCTION
XE-A303 (V)
HARDWARE DESCRIPTION
– 8 –
P93
7
I
P9_3/DA0/TB3IN
KR3
Out L
KEY RETURN SIGNAL
P94
6
I
P9_4/DA1/TB4IN
KR4
Out L
KEY RETURN SIGNAL
P95
5
I
P9_5/ANEX0/CLK4
KR5
Out L
KEY RETURN SIGNAL
P96
4
I
P9_6/ANEX1/SOUT4
KR6
Out L
KEY RETURN SIGNAL
P97
3
I
P9_7/#ADTRG/SIN4
KR7
Out L
KEY RETURN SIGNAL
P100
128
I (A/D)
P10_0/AN0
HTEMP0
In (A/D)
HEAD TEMPERATURE
MONITOR 0
MONITOR 0
P101
126
I (A/D)
P10_1/AN1
HTEMP1
In (A/D)
HEAD TEMPERATURE
MONITOR 1
MONITOR 1
P102
125
I (A/D)
P10_2/AN2
VPTEST0
In (A/D)
VH0 MONITOR
P103
124
I (A/D)
P10_3/AN3
VPTEST1
In (A/D)
VH1 MONITOR
P104
123
I
P10_4/AN4/#KI0
P104
H
In
MODEL JUDGMENT
P105
122
O
P10_5/AN5/#KI1
LCDON
L
Out L
LCD DISPLAY ON
P106
121
O
P10_6/AN6/#KI2
LCDRW
L
Out L
LCD RD/WR
P107
120
O
P10_7/AN7/#KI3
LCDRS
L
Out L
LCD CONTROL
P110
119
O
P11_0
#LAT0
H
In
DATA LATCH SIGNAL
P111
118
O
P11_1
#STB01
H
In
PRINTER STB SIGNAL
P112
117
O
P11_2
#STB02
H
In
PRINTER STB SIGNAL
P113
116
O
P11_3
#STB03
H
In
PRINTER STB SIGNAL
P114
115
O
P11_4
#LAT1
H
In
DATA LATCH SIGNAL
P115
114
O
P11_5
#STB11
H
In
PRINTER STB SIGNAL
P116
113
O
P11_6
#STB12
H
In
PRINTER STB SIGNAL
P117
112
O
P11_7
#STB13
H
In
PRINTER STB SIGNAL
P120
84
O
P12_0
KS0
H
Out L
KEY SCAN SIGNAL
P121
83
O
P12_1
KS1
H
Out L
KEY SCAN SIGNAL
P122
82
O
P12_2
KS2
H
Out L
KEY SCAN SIGNAL
P123
81
O
P12_3
KS3
H
Out L
KEY SCAN SIGNAL
P124
80
I
P12_4
MODR
IN
MODE SW RETURN SIGNAL
P125
64
I
P12_5
FRDY
IN
FROM RDY/BUSY
P126
63
O
P12_6
ROMBANK
L
Out L
BANK SWITCH ROM
P127
62
O
P12_7
RAMBANK
L
Out L
BANK SWITCH ROM
P130
57
I
P13_0
(NU) (KR8)
Out L
(KEY RETURN SIGNAL
RESERVE)
RESERVE)
P131
56
I
P13_1
(NU) (KR9)
Out L
(KEY RETURN SIGNAL
RESERVE)
RESERVE)
P132
55
I
P13_2
(NU) (KR10)
Out L
(KEY RETURN SIGNAL
RESERVE)
RESERVE)
P133
54
I
P13_3
(NU) (KR11)
Out L
(KEY RETURN SIGNAL
RESERVE)
RESERVE)
P134
49
I
P13_4
RJR
In
R/J KEY RETURN
P135
48
O
P13_5
BLON0
L
Out L
LCD BACKLIGHT ON
P136
47
O
P13_6
BLON1
L
Out L
LCD BACKLIGHT ON
P137
46
O
P13_7
LCDE
L
Out L
LCD ENABLE
P140
12
O
P14_0
VPON
L
Out L
24V CIRCUIT ON/OFF
P141
11
O
P14_1
DRWER
L
Out L
DRAWER OPEN SIGNAL
VREF
1
VREF
AVCC
AVCC
2
AVCC
AVCC
BYTE
13
I
BYTE
BYTE
In
CNVSS
14
I
CNVSS
CNVSS
In
RESET
17
I
RESET
RESET#
In
CPU RESET
XOUT
18
O
XOUT
XOUT
Out L
MAIN CLOCK
VSS
19
VSS
VSS
XIN
20
I
XIN
XIN
In
MAIN CLOCK
VCC1
21
VCC1
VCC
VCC1
37
VCC1
VCC
VSS
39
VSS
VSS
VCC2
85
VCC2
VCC
VSS
87
VSS
VSS
AVSS
127
AVSS
VSS
PORT
PIN No.
I/O
PIN NAME
SIGNAL NAME
INTIAL VALUE
OFF MODE
FUNCTION
XE-A303 (V)
HARDWARE DESCRIPTION
– 9 –
4-2. XE-A303V PORT
●●●●● ●●
pending
< Model Judgment >
The model is judged when starting the internal ROM.
< External Area Control >
For details, refer to the address map.
< Key Strobe >
< Key Return >
< LCD Control >
< USB Control >
5. DISPLAY OUTPUT/KEY INPUT
This unit is provided with the POPUP display of 7 digit and 7 segment
LED and the front display of 5
LED and the front display of 5
u
7 dot, 16-digit
u
2 lines.
The front display is the LCD with the LCD controller same as those
used in the conventional XE-A401 series. Its connector pin arrangement
was partially changed along with 2 color back light.
was partially changed along with 2 color back light.
< Key Strobe >
< Key Return >
5-1. POPUP DISPLAY/KEY
< POPUP/KEY MAP >
PIN No. CPU PORT SIGNAL NAME
FUNCTION
123
P104
P104
I
BE USED TO MODEL
JUDGMENT
H : XE-A303V
JUDGMENT
H : XE-A303V
PIN No. CPU PORT SIGNAL NAME
FUNCTION
59
P52/#RD
#RD
O
READ SIGNAL
61
P53/#WR
#WR
O
WRITE SIGNAL
62
P127
RAMBANK
O
RAMBANK SIGNAL
63
P126
ROMBANK
O
ROMBANK SIGNAL
64
P125
FRDY
I
FLASH-ROM RDY/BUSY
SIGNAL INPUT
SIGNAL INPUT
65
P47
#CS3
O
66
P46
#CS2
O
67
P45
#CS1
O
68
P44
#CS0
O
PIN No.
PORT
SIGNAL NAME
FUNCTION
84
P120
KST0
KEY STROBE SIGNAL 0
83
P121
KST1
KEY STROBE SIGNAL 1
82
P122
KST2
KEY STROBE SIGNAL 2
81
P123
KST3
KEY STROBE SIGNAL 3
PIN No.
PORT
SIGNAL NAME
FUNCTION
10
P90
KR0
KEY RETURN SIGNAL 0
9
P91
KR1
KEY RETURN SIGNAL 1
8
P92
KR2
KEY RETURN SIGNAL 2
7
P93
KR3
KEY RETURN SIGNAL 3
6
P94
KR4
KEY RETURN SIGNAL 4
5
P95
KR5
KEY RETURN SIGNAL 5
4
P96
KR6
KEY RETURN SIGNAL 6
3
P97
KR7
KEY RETURN SIGNAL 7
PIN No. CPU PORT SIGNAL NAME
FUNCTION
32
P73
LCDCS#
L : LCD WRITE DATA LATCH
SIGNAL
46
P137
LCDE
LCD ENABLE
47
P136
BLON1
BACK LIGHT ON SIGNAL
48
P135
BLON0
BACK LIGHT ON SIGNAL
120
P107
LCDRS
H : DATA INPUT
L : INSTRUCTION INPUT
L : INSTRUCTION INPUT
121
P106
LCDRW
H : DATA READ
L : DATA WRITE
L : DATA WRITE
122
P105
LCDON
LCDON SIGNAL
PIN No. CPU PORT SIGNAL NAME
FUNCTION
23
P84/#INT2
INTUSB#
I
USB CONTROLLER
INTERRUPT SIGNAL
INTERRUPT SIGNAL
24
P83/#INT1
DREQUSB#
I
USB DMA CONTROL
SIGNAL
(FUNCTION UNUSED)
SIGNAL
(FUNCTION UNUSED)
26
P81
RESUSB#
O
USB CONTROLLER
RESET SIGNAL
RESET SIGNAL
FUNCTION
R/W
ADDRESS
POPUP Display
7segment
u
7 LED
W
04000H CS3 AREA
Front Display
LCD M398
R/W
04001H CS3 AREA
*
R is 0400h under the
present situation.
present situation.
PIN No.
PORT
SIGNAL NAME
FUNCTION
84
P120
KST0
KEY STROBE SIGNAL 0
83
P121
KST1
KEY STROBE SIGNAL 1
82
P122
KST2
KEY STROBE SIGNAL 2
81
P123
KST3
KEY STROBE SIGNAL 3
PIN No.
PORT
SIGNAL NAME
FUNCTION
10
P90
KR0
KEY RETURN SIGNAL 0
9
P91
KR1
KEY RETURN SIGNAL 1
8
P92
KR2
KEY RETURN SIGNAL 2
7
P93
KR3
KEY RETURN SIGNAL 3
6
P94
KR4
KEY RETURN SIGNAL 4
5
P95
KR5
KEY RETURN SIGNAL 5
4
P96
KR6
KEY RETURN SIGNAL 6
3
P97
KR7
KEY RETURN SIGNAL 7
S0#~S9#
HC
138
138
KS0~KS3
POPUP Display 7digit
Keyboard / MODE SW
MATRIX
S0#~S7#
HCT
273
273
D0~D7
a
㨪
g, dp
/CS0 04000h
KR0~KR7
CPU
MODR
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