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7.6. IC8 ( USB Chip )
IC8 (USB Chip)
Pin
No.
Symbol In/Out Function
Pin
No.
Symbol In/Out Function
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
NC1
RESET
nSTROBE
BUSY
D0
D1
D2
D3
VCC1
GND1
D4
D5
D6
D7
VCP
D+
D-
VCC2
GND2
NC2
-
In
Out
In
Out
Out
Out
Out
-
-
Out
Out
Out
Out
Out
In/Out
In/Out
-
-
-
N.C.
System Reset signal
Strobe signal
Busy signal
Parallel data0
Parallel data1
Parallel data2
Parallel data3
+5V
GND
Parallel data4
Parallel data5
Parallel data6
Parallel data7
+3.3V output
USB differential data +
USB differential data -
+5V
GND
N.C.
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
NC3
NC4
X2
X1
NC5
PLH
NC6
nACK
CS
SK
VCC3
GND3
DI
DO
nFAULT
SELECT
PERR
nINT
nAUTOFD
nSELECTIN
-
-
-
In
-
-
-
In
-
-
-
-
-
-
In
In
In
Out
Out
Out
N.C.
N.C.
N.C.
System clock
N.C.
N.C.
N.C.
Acknowledge signal
(not used)
(not used)
+5V
GND
(not used)
(not used)
Fault signal
Select signal
Paper end signal
Initial signal
Auto Feed signal
Select In siganl
7.7. IC9 ( Comparators )
IC9 (Comparators)
Pin
No.
Symbol In/Out Function
1
2
3
4
5
6
7
8
A OUTPUT
A -INPUT
A +INPUT
GND
B+INPUT
B -INPUT
B OUTPUT
VCC
Out
In
In
-
In
In
Out
-
Comparator A Output
Comparator A-Input
Comparator A+Input
GND
Comparator B+Input
Comparator B-Input
Comparator B Output
+5V
7.8. IC10 ( Reset IC )
IC10 (Reset IC)
Pin
No.
Symbol In/Out Function
1
2
3
4
GND
VDD
CD
RESET
-
-
-
Out
GND
+5V
Delay Capacitor
Reset Signal
92
KX-P7100