EPSON PhotoPC 800
Revision A
Operating Principle
Operating principles of the Circuit Boards
44
Table 2-7. 8-bit Microprocessor Port Specification
Table 2-8. 8-bit Microprocessor Port Specification
Pin
Signal Name
I/O
Outline
1
CHG VOL
I
Strobe charge voltage input (analog input)
2,3
NOT USED
--
Connect to GND
4-7
SCAN IN 0-3
I
Key matrix input
8
AVDD
--
Analog power input terminal
9
AVREF
I
Analog standard voltage input terminal
10
/STBY (R) LED
O
Standby LED (red) drive L:LED light
11
/STBY (G) LED
O
Standby LED (green) drive L:LED light
12
VSS
--
GND87
13
/SELF LED
O
Self-timer LED drive L:LED light
14
VF LED
O
Viewfinder LED drive L:LED light
15-19
NOT USED
--
Connect to GND
20
/AVREF ON
O
Analog standard voltage ON/OFF signal
L:ON
21
BUZZER
O
Buzzer output
22
CHG ON
O
Strobe charge ON/OFF signal H:ON
23-25
COM1- COM3
O
Mode LCD common output
26
NOT USED
O
--
27
BIAS
--
Mode LCD drive power supply (connect to
VLCO)
28-30
VLC0 - VLC2
--
Mode LCD power input terminal (external
register connection)
31
VSS
--
GND
32-49
S1-S18
O
LCD segment output 1-19
50-55
NOT USED
O
--
56
NOT USED
O
Connect to GND
Pin
Signal Name
I/O
Outline
57-59
SCAN IN4-6
I
Keymatrix input
64
WAKE UP
O
SPARC Wake up terminal
65-69
NOT USED
O
Connect to GND
70
PA ON
O
DC/DC converter (analog) ON/OFF signal H:ON
71
P ON
O
DC/DC converter (digital) O/OFF signal H:ON
72
/DIN CONNECT
I
PC cable connection detection H:Connection
73
CARD
I
Memory card detection L:Attachment
74
V JACK
I
Video cable connection detection H:Connection
75
SI
I
Serial data input (
⇐
ASIC)
76
SO
O
Serial data output (
⇒
ASIC)
77
SCK
O
Serial clock output (
⇒
ASIC)
78
IC
--
Internal connection (Connect to VSS terminal
directly)
79
XOUT
O
Main clock oscillation terminal
80
XIN
I
Main clock oscillation terminal (4MHz)
81
VDD
--
VDD
82
XCIN
I
Clock oscillation terminal (32. 768 kHz)
83
XOUT
O
Clock oscillation terminal
84
/RESET
I
Reset input
85
/BAT OFF
I
Battery OFF detection signal
86
RXD
I
Host wake up input terminal L:ON
87
/SREQ
I
Serial communication request signal
L:Serial request
88
USB
I
USB cable connection detection L:Connection
89,90
NOT USED
--
Connect to GND
Summary of Contents for PhotoPC 800
Page 1: ...EPSONPhotoPC800 Digital Still Camera SEDC99002 6 59 0 18 6 59 0 18 6 59 0 18 6 59 0 18 ...
Page 5: ...Revision Status Revision Issued Date Description A June 10 1999 First Release ...
Page 8: ... 3 7 5 4 PRODUCT DESCRIPTION ...
Page 32: ... 3 7 5 5 OPERATINGPRINCIPLE ...
Page 52: ... 3 7 5 6 TROUBLESHOOTING ...
Page 55: ... 3 7 5 7 DISASSEMBLYANDASSEMBLY ...
Page 74: ... 3 7 5 8 ADJUSTMENT ...
Page 90: ... 3 7 5 9 MAINTENANCE ...
Page 92: ... 3 7 5 APPENDIX ...
Page 94: ......
Page 96: ...ca1_pcb ...
Page 97: ...ca2_pcb ...
Page 98: ...sy1_pcb ...
Page 99: ...pw1_pcb ...
Page 101: ......
Page 102: ...NTSC ...
Page 103: ...PAL ...
Page 104: ......
Page 105: ......
Page 110: ......