Casio A-10 Operation, Service Manual & Parts List page 31

N o Pin Name I n / O u t
84 MD2/RXD I
85 MD1/TXD O
86 MD0/SCK I/O
87 BREQB I
88 RESETB I
89 NMI I
90 IRL3 I
91 IRL2 I
92 IRL1 I
93 IRL0 I
94 IOIS16B I
95 IRQOUTB O
96 BASKB O
97 STATUS1 O
98 STATUS0 O
99 ONSTAUTSB O
101 CKIO I/O
103 MD4/CE2B O
104 ONB I
105 BSB O
106 RD/WRB O
107 RDB O
108 CS6B/CE1B O
109 CS5B O
110 CS4B O
111 CS3B O
112 CS2B O
113 CS1B O
114 CS0B O
117 ICIOWRB O
118 ICIORDB O
119 CAS2HB O
120 CAS2LB O
123 WE1B I
124 WE0B I
125 CASLHB I
126 CASSLL/OEB I
129 RAS/CEB O
130 MD5/RAS2B I/O
131 STATUS3 O
132 SYAYUS2 O
134 WAITB I
136 XTAL2 O
137 EXTAL2 I
140 RTCCLK O
141 RTCCLKENB I
142 RXD1 I
143 TXD1 O
Function
Data inout of serial port 0
Data output of serial port 0
Clock of serial port 0. Connected to GND
Bus request
Reset signal from SYSTEM LSI
Non-maskable Interrupt request
Interrupt request
Interrupt request. Connected to +3.3 V
Interrupt request. Connected to +3.3 V
Interrupt request. Connected to +3.3 V
Write protect input
Not used
Bus access permission
Not used
Bus status
V3ROM (+3.3 V) ON/OFF control. H=ON
System clock I/O
Chip enable
On circuit start request
Not used
Read / Write signal
Read pulse
Chip select-6 signal
Not used
Chip select -4 signal
Not used
Not used
Not used
Chip select -0 signal
Write signal for PCMCIA I/O
Read signal for PCMCIA I/O
D15~D8 select signals for RAM on Memory slot
D7~D0 select signals
D15~D8 select signals
D7~D0 select signals
D15~D8 select signals
D7~D0 select / memory select signal
CE signal for RAM
RAS for DRAM on Memory slot
Not used
Not used
Hardware wait request
Oscillator terminal(for internal RTC)
Oscillator terminal(for internal RTC)
RTC clock output
RTC clock output enable. Connected to GND
Serial port1(232C) data input
Serial port1(232C) data output
— 28 —
To/From
GA
GA
SYSTEM LSI, GA
SYSTEM LSI, GA
SYSTEM LSI
SYSTEM LSI
GA
SYSTEM LSI
SYSTEM LSI
SYSTEM LSI,Power
SYSTEM LSI, GA
GA
SYSTEM LSI
SYSTEM LSI, GA
SYSTEM LSI, GA
GA
SYSTEM LSI, GA
SYSTEM LSI, M-slot
GA
GA
M-slot
SYSTEM LSI, GA
SYSTEM LSI, GA
SYSTEM LSI
SYSTEM LSI
SYSTEM LSI
M-slot
GA
Y1
Y1
SYSTEM LSI
SYSTEM LSI, U6
SYSTEM LSI, U6