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b) PPI (IC105) Port map
Terminal
Signal line name
1
NC
2
nCS
3
GND
4
A1
5
A0
6
PC7
7
P_TYPE 1
8
P_TYPE 0
9
nHOT_RESET
10
TRNS_ENB
11
PRE_HEAT
12
EXTRA
13
CK_SEL
14
SEL0
15
SEL1
16
SEL2
17
NC
18
nC_RESET
19
nSTNBY
20
nSTRB
21
nCTS_CLR
22
PB7
23
Vcc
24
D7
25
D6
26
D5
27
D4
28
D3
29
D2
30
D1
UP-D70/D70A (UC,CE)
I/O
Function
I
Tip select
GND
I
Address
I
Address
O
O
Number of the identical images in one printout
O
Number of the identical images in one printout
O
PQC IC hot reset
O
Control line for transmission in printing
O
Preheat control line
O
O
Head control clock select
O
Daughter board select signal
O
Daughter board select signal
O
Daughter board select signal
O
Daughter board CPU reset
O
Daughter board CPU stand-by
O
Daughter board clock for program transmission
O
nCTS_LATCH Clear
O
Power supply
I
Data
I
Data
I
Data
I
Data
I
Data
I
Data
I
Data
4-15
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