REV.-~
Table A-9. GA E05A16GA Port Functions
Pin No. Signal Name
Direction
Function
1
DB4
J
J
IN/OUT
Multiplex
tri-state
data bus bit 4-7 The data is output
when RD signal is low.
4
DB7
5
RXDIN
IN
RXD signal input port
6
RSTIN
1
IN
Reset signal input No. 1
RSTIN
1 signal is output to
RSTOUT
signal port.
7 I
Vss
I
–
Ground
RSTIN
IN
IN7
J
IN
IN2
Reset signal input No.2
RSTIN
2 signal is output to
RSTOUT
signal port.
Parallel data input port
The data from the host computer is latched when the strobe signal is input.
Strobe signal input port
The parallel data from host computer is latched by
STRB
signal.
15
I
STRB
I
IN
17
IN 1
IN
18
I NO
Parallel data input port.
The data from the host computer is latched when the strobe signal is input.
19
RSTOUT
OUT
Reset signal output port
20
BUSY
OUT
Busy signal output port
21
I
ACK
I
OUT
I
Acknowledge signal output port
22
PE
OUT
Paper end signal output port
23
ERR
OUT
Error signal output port
PC3
OUT output port
J
Pco
28
I
RXDOUT
I
OUT
ISerial
dataoutput port
29
PD1
OUT
output port
30
PDO
31
]
PAO
I
IN
I
input port
33
34
35
+----L
Input port
PC4
J
out output port
PC7
PBO
~
OUT
PB7
output port
48
‘
ss
I
-
Ground
49
J
53
PA3
J
IN
PA7
Input port
AO
J
IN
A2
Address input port (low address bit O-2)
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