– 8 –
Table 4-2. Key Operation
3. Key Operaiton
For details of the key operation, refer to the instruction manual.
Table 4-1. 8-bit Microprocessor Port Specification
1
2
0
1
2
3
SCAN
OUT
SCAN
IN
SET
PW_ON
RIGHT
S2
PLAY
LEFT
S1
4
VF
CARD
DC_IN
DOWN
UP
5
REC
USB_CONNECT
0
43
AVDD
I
VDD
44
AVREF
I
Analog standard voltage input terminal
42
BACKUP CTL
O
Backup battery charge control
Fig. 4-1 Internal Bus Communication System
2. Internal Communication Bus
The SYA block carries out overall control of camera operation by detecting the input from the keyboard and the condition of the
camera circuits. The 8-bit microprocessor reads the signals from each sensor element as input data and outputs this data to the
camera circuits (ASIC) or to the LCD display device as operation mode setting data. Fig. 4-1 shows the internal communication
between the 8-bit microprocessor and ASIC.
8-bit micro processor
ASIC
MRST
ZTEST
PLLEN
SI
SO
SCK
SREQ
communi-
cation
COMREQ
setting of
external port
TELE
WIDE
MENU
