Table of Contents
Advertisement
48
BOOT
49
AV JACK
50
OPEN
51
/CARD
52
NOT USED
53
LCD ON2
54
/SCAN_IN 4
55
/SCAN_IN 5
56
/BACKUP_CNT
57
/USB
58
BR_OPEN
59
BR CLOSE
60
CLKSEL 0
61
CLKSEL 1
62
PLLEN
63
ZTEST
64
/ASIC RESET
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. 5-1 shows the internal communication
between the 8-bit microprocessor, ASIC and SPARC lite circuits.
8-bit
Microprocessor
3. Key Operaiton
For details of the key operation, refer to the instruction manual.
SCAN
SCAN
IN
OUT
← LEFT
0
1
MODE
2
REC
I/O
Compulsion boot control
AV jack connection detection
I
I
Lens barrier open detection switch input
I
SD card insertion detection
-
-
O
LCD power ON/OFF control 2
I
Key scan input 4
I
Key scan input 5
O
Backup battery charge control
USB connector detection
I
O
Lens barrier open control
O
Lens barrier close control
CPU clock ON/OFF control
O
O
CPU clock swtich control
O
PLL reset signal
O
ASIC reset signal
O
CPU reset singal
Table 5-1. 8-bit Microprocessor Port Specification
Fig. 5-1 Internal Bus Communication System
1
0
↑ UP
MENU
REC (VF)
Table 5-2. Key Operation
ZTEST
ASIC RESET
S. REQ
ASIC SO
ASIC SI
ASIC SCK
PLLEN
CLKSEL0
CLKSEL1
2
3
↓ DOWN
→ RIGHT
FLASH
SET
PC CAM
PLAY
– 7 –
L : DC JACK detection
H : AV jack detection
L : Insertion
L : Charge ON
L : USB detecion
H : Open
H : Close
H : ON
L : RESET
L : RESET
L : RESET
ASIC
4
5
TELE
WIDE
1st SHUTTER
2nd SHUTTER
OPTION
COM
6
TEST
POWER OFF
Advertisement
Chapters
Table of Contents
