Samsung SRP-350PG Service Manual - Page 47

Semiconductor Base Diagram

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6 Reference Information 6-1 Semiconductor Base Diagram Pin Port Function I/O 1 P9.6 DIP_C3 In 2 P9.5 DIP_C2 In 3 P9.4 DIP_C1 In 4 P9.3 DIP_R3 Out 5 P9.2 DIP_R2 Out 6 P9.1 DIP_R1 Out 7 P9.0 DIP_R4 Out 8 BYTE +5V (VCC) - 9 CNVSS +5V (VCC) - 10 P8.7 Parallel Paper Error Out 11 P8.6 StepI1 Out 12 RESET Reset In 13 XOUT N.C - 14 VSS Ground - 15 XIN X-TAL(16.00MHz) In 16 VCC +5V (VCC) - 17 P8.5 NMI Pull-Up (VCC) - 18 P8.4 Parallel /Init Out 19 P8.3 Parallel /SelectIn In 20 P8.2 Parallel / USB Interrupt In 21 P8.1 Step_B Out 22 P8.0 Step_A Out 23 P7.7 Parallel Write Out 24 P7.6 Buzzer Out 25 P7.5 Parallel Read Out 26 P7.4 N.C - 27 P7.3 TPH Strobe#2 Out 28 P7.2 TPH Strobe#1 Out 29 P7.1 StepI0 Out 30 P7.0 I/F Board Select Out 31 P6.7 TPH Data Out 32 P6.6 TPH Latch Out 33 P6.5 TPH Clock Out 34 P6.4 DSR(RS-232), CTS(RS-485) In 35 P6.3 ACK(Parallel), TXD(RS-232,RS-485) Out 36 P6.2 SLCT(Parallel), RXD(RS-232,RS-485) In 37 P6.1 Thermal Head Voltage On/Off Out 38 P6.0 DTR(RS-232), RTS(RS-485) Out 39 P5.7 /RDY Out 40 P5.6 Pull-Up (ALE) - 41 P5.5 Pull-Up (/HOLD) - 42 P5.4 Pull-Up (/HLDA) - 43 P5.3 N.C (BCLK) - 44 P5.2 /RD Out 45 P5.1 N.C (/BHE) - 46 P5.0 /WR Out 47 P4.7 /CS3 (Chip Select 3) - USB CS Out 48 P4.6 /CS2 (Chip Select 2) Out 49 P4.5 /CS1 (Chip Select 1) Out 50 P4.4 /CS0 (Chip Select 0) Out Pin Port 51 P4.3 52 P4.2 53 P4.1 54 P4.0 55 P3.7 56 P3.6 57 P3.5 58 P3.4 59 P3.3 60 P3.2 61 P3.1 62 VCC 63 P3.0 64 VSS 65 P2.7 66 P2.6 67 P2.5 68 P2.4 69 P2.3 70 P2.2 71 P2.1 72 P2.0 73 P1.7 74 P1.6 75 P1.5 76 P1.4 77 P1.3 78 P1.2 79 P1.1 80 P1.0 81 P0.7 82 P0.6 83 P0.5 84 P0.4 85 P0.3 86 P0.2 87 P0.1 88 P0.0 89 P10.7 90 P10.6 91 P10.5 92 P10.4 93 P10.3 94 P10.2 95 P10.1 96 AVSS 97 P10.0 98 VREF 99 AVCC 100 P9.7 Function Address 19 Address 18 Address 17 Address 16 Address 15 Address 14 Address 13 Address 12 Address 11 Address 10 Address 9 +5V / VCC Address 8 Ground Address 7 Address 6 Address 5 Address 4 Address 3 Address 2 Address 1 Address 0 Drawer#2 Drawer#1 Paper LED Error LED Parallel Auto Feed Parallel /Fault Auto Cutter B Auto Cutter A Data 7 Data 6 Data 5 Data 4 Data 3 Data 2 Data 1 Data 0 Thermal Temperature ADC Voltage Parallel Busy Auto Cutter Sensing S/W Cover Sensing S/W Near End Sensing S/W Paper Feed S/W Paper End Sensing S/W Ground Drawer Compulsory Sensing S/W AD Reference Voltage Input +5V (VCC) DIP_C4 I/O Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out In Out Out Out In/Out In/Out In/Out In/Out In/Out In/Out In/Out In/Out In In In In In In In In In In 6-2 Samsung Electro-Mechanics

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6
Reference Information
6-2
6-1 Semiconductor Base Diagram
Pin
Port
Function
I/O
Pin
Port
Function
I/O
1
P9.6
DIP_C3
In
51
P4.3
Address 19
Out
2
P9.5
DIP_C2
In
52
P4.2
Address 18
Out
3
P9.4
DIP_C1
In
53
P4.1
Address 17
Out
4
P9.3
DIP_R3
Out
54
P4.0
Address 16
Out
5
P9.2
DIP_R2
Out
55
P3.7
Address 15
Out
6
P9.1
DIP_R1
Out
56
P3.6
Address 14
Out
7
P9.0
DIP_R4
Out
57
P3.5
Address 13
Out
8
BYTE
+5V (VCC)
-
58
P3.4
Address 12
Out
9
CNVSS
+5V (VCC)
-
59
P3.3
Address 11
Out
10
P8.7
Parallel Paper Error
Out
60
P3.2
Address 10
Out
11
P8.6
StepI1
Out
61
P3.1
Address 9
Out
12
RESET
Reset
In
62
VCC
+5V / VCC
-
13
XOUT
N.C
-
63
P3.0
Address 8
Out
14
VSS
Ground
-
64
VSS
Ground
Out
15
XIN
X-TAL(16.00MHz)
In
65
P2.7
Address 7
Out
16
VCC
+5V (VCC)
-
66
P2.6
Address 6
Out
17
P8.5
NMI Pull-Up (VCC)
-
67
P2.5
Address 5
Out
18
P8.4
Parallel /Init
Out
68
P2.4
Address 4
Out
19
P8.3
Parallel /SelectIn
In
69
P2.3
Address 3
Out
20
P8.2
Parallel / USB Interrupt
In
70
P2.2
Address 2
Out
21
P8.1
Step_B
Out
71
P2.1
Address 1
Out
22
P8.0
Step_A
Out
72
P2.0
Address 0
Out
23
P7.7
Parallel Write
Out
73
P1.7
Drawer#2
Out
24
P7.6
Buzzer
Out
74
P1.6
Drawer#1
Out
25
P7.5
Parallel Read
Out
75
P1.5
Paper LED
Out
26
P7.4
N.C
-
76
P1.4
Error LED
Out
27
P7.3
TPH Strobe#2
Out
77
P1.3
Parallel Auto Feed
In
28
P7.2
TPH Strobe#1
Out
78
P1.2
Parallel /Fault
Out
29
P7.1
StepI0
Out
79
P1.1
Auto Cutter B
Out
30
P7.0
I/F Board Select
Out
80
P1.0
Auto Cutter A
Out
31
P6.7
TPH Data
Out
81
P0.7
Data 7
In/Out
32
P6.6
TPH Latch
Out
82
P0.6
Data 6
In/Out
33
P6.5
TPH Clock
Out
83
P0.5
Data 5
In/Out
34
P6.4
DSR(RS-232), CTS(RS-485)
In
84
P0.4
Data 4
In/Out
35
P6.3
ACK(Parallel), TXD(RS-232,RS-485)
Out
85
P0.3
Data 3
In/Out
36
P6.2
SLCT(Parallel), RXD(RS-232,RS-485)
In
86
P0.2
Data 2
In/Out
37
P6.1
Thermal Head Voltage On/Off
Out
87
P0.1
Data 1
In/Out
38
P6.0
DTR(RS-232), RTS(RS-485)
Out
88
P0.0
Data 0
In/Out
39
P5.7
/RDY
Out
89
P10.7
Thermal Temperature ADC Voltage
In
40
P5.6
Pull-Up (ALE)
-
90
P10.6
Parallel Busy
In
41
P5.5
Pull-Up (/HOLD)
-
91
P10.5
Auto Cutter Sensing S/W
In
42
P5.4
Pull-Up (/HLDA)
-
92
P10.4
Cover Sensing S/W
In
43
P5.3
N.C (BCLK)
-
93
P10.3
Near End Sensing S/W
In
44
P5.2
/RD
Out
94
P10.2
Paper Feed S/W
In
45
P5.1
N.C (/BHE)
-
95
P10.1
Paper End Sensing S/W
In
46
P5.0
/WR
Out
96
AVSS
Ground
-
47
P4.7
/CS3 (Chip Select 3) – USB CS
Out
97
P10.0
Drawer Compulsory Sensing S/W
In
48
P4.6
/CS2 (Chip Select 2)
Out
98
VREF
AD Reference Voltage Input
In
49
P4.5
/CS1 (Chip Select 1)
Out
99
AVCC
+5V (VCC)
-
50
P4.4
/CS0 (Chip Select 0)
Out
100
P9.7
DIP_C4
In
Samsung Electro-M
e
chanics