Sharp ER-A440 Service Manual page 14

3) Pin description
Pin Signal In/
No. name Out
1 RF Out Receipt side paper feed solenoid
2 JF Out Journal side paper feed solenoid
3 PCUT Out Printer partial cut signal (NU)
4 FCUT Out Printer auto cut signal (NU)
5 VF Out Multi line validation paper feed (NU)
6 STAMP Out Printer stamp signal (NU)
7 SLFS Out Slip printer paper feed singnal (NU)
8 SLRS Out Slip printer release signal (NU)
9 SLMTD Out Slip printer motor drive signal (NU)
10 RES Out Peripheral output reset
11 TRG Out Dot head trigger signal (NU)
12 TRG Out Dot head trigger signal
13 POFF In Power off signal input
14 INT1 In (NU)
15 HTS1 Out 8 bit serial port output (for CKDC8)
16 SCK1 Out Serial port shift clock output (for CKDC8)
17 STH1 In 8 bit serial port input (for CKDC8)
18 RAS VZ — Chip select (NU)
19 — — Nu
20 VCC — +5V
21 GND — GND
22 INTMCR — Interrupt (NU)
Turns active when reset and power
23 Out
VRESC
down is met
24 SLTMG In Slip printer timing signal (NU)
25 SLRST In Slip printer reset signal (NU)
26 AS In Address strobe
27 RD In Read strobe
28 WR In Write strobe
29 In ( ) System clock (7.3728 MHz)
Slip printer printhead drive signal (dot7)
30 Out
SDT7
(NU)
Slip printer printhead drive signal (dot6)
31 Out
SDT6
(NU)
Slip printer printhead drive signal (dot5)
32 Out
SDT5
(NU)
33 GND — GND
Slip printer printhead drive signal (dot4)
34 Out
SDT4
(NU)
Slip printer printhead drive signal (dot3)
35 Out
SDT3
(NU)
Slip printer printhead drive signal (dot2)
36 Out
SDT2
(NU)
Slip printer printhead drive signal (dot1)
37 Out
SDT1
(NU)
38 D0 I/O Data bus 0
39 D1 I/O Data bus 1
40 D2 I/O Data bus 2
41 D3 I/O Data bus 3
42 GND — GND
43 D4 I/O Data bus 4
44 D5 I/O Data bus 5
45 D6 I/O Data bus 6
46 D7 I/O Data bus 7
47 SPRQ Out SSP interrupt request to CPU
48 RESET In MPCA reset
49 SHEN In Shift enable from CKDC8
Function
4 – 7
Pin Signal In/
No. name Out
50 INT3 In Interrupt signal (Nu)
51 RXD2 Out 8 bit serial port output to CPU
52 TXD2 In 8 bit serial port input from CPU
53 SCK2 In Serial port shift clock input from CPU.
54 IRQ0 Out Interrupt request to CPU
55 A0 In Address bus 0
56 A1 In Address bus 1
57 A2 In Address bus 2
58 A3 In Address bus 3
59 A4 In Address bus 4
60 A5 In Address bus 5
61 GND — GND
62 VCC — +5V
63 A6 In Address bus 6
64 A7 In Address bus 7
65 A8 In Address bus 8
66 A9 In Address bus 9
67 A10 In Address bus 10
68 A11 In Address bus 11
69 A12 In Address bus 12
70 A13 In Address bus 13
71 A14 In Address bus 14
72 A15 In Address bus 15
73 A16 In Address bus 16
74 A17 In Address bus 17
75 A18 In Address bus 18
76 A19 In Address bus 19
77 A20 In Address bus 20
78 A21 In Address bus 21
79 A22 In Address bus 22
80 LCDC — LCD CS (NU)
81 A23 In Address bus 23
82 TRGI In Dot pulse control/drive signal
83 PTMG Out Printer timing signal
84 PRST Out Printer reset signal
85 RDY In Ready from FMC unit
86 IPLON In To option connector (NU)
87 MD1 In Mode select input (+5V)
88 MD0 In Mode select input (GND)
89 TEST In +5V
90 MA15 — Image address 15 (NU)
91 MA18 — Nu
92 MA19 — Nu
93 RCVRDY1 — Nu
94 RCVRDY2 — Nu
95 RC0 — Remote control encord signal for CPU
96 IRTX — I/R output for LED (NU)
97 UASCK — I/R serial data shift clock (NU)
98 UARX — I/R serial data for CPU (NU)
99 UATX — I/R serial data from CPU (NU)
100 VCC — +5V
101 GND — GND
102 IRRX — I/R input from I/R unit (NU)
103 RCI — I/R input from I/R unit (NU)
104 DAX1 — System clock (7.3728MHz)
Function