– 7 –
9. Receiving user operations showing that the camera has been turned on
When the battery is installed, the 3.2V power supply which is output from IC501 is constantly being input to the power sequencer
of the ASIC, and it monitors user operations that generate a P-ON request (such as POWER key input and panel opening).
10. Power control
When a power on request is generated by the user, the PON signal is set to High and the DC/DC converter turns on. In addition,
the resetting of the CPU inside the ASIC is canceled. This causes all blocks and memories other than the power sequencer of the
ASIC to start operating.
ON/OFF control for the 1.8V, 2.8V and 3.3V power supplies for the CMOS sensor is carried out by the ASIC setting PAON1 and
PAON2 to High or Low, and also by I2C signal sent to IC501.
11. Clock backup
The clock backup is carried out by IC501.
The ASIC gets clock information via I2C when necessary.
ASIC/memory
CMOS
Power OFF
Play mode
1.1V, 1.8V, 3.3V
OFF
OFF
ON
ON
Shooting mode
1.8V, 2.8V, 3.3V
ON
OFF
Table 2-3. Power Control
8. Key Operation
For details of the key operation, refer to the instruction manual.
Table 2-2. Key Operation
0
0
1
2
3
SCAN
OUT
SCAN
IN
LEFT
VREC
POWER
1
2
DOWN
TEST
-
-
MENU
PW_TEST
RIGHT
PLAY
UP
4
-
-
SET
3
WIDE
ZOOMSEL
TELE
-
-
Summary of Contents for VPC-CA100EXBK
Page 18: ... 18 2 6 BOARD LOCATION ST1 board TB1 board CP1 board VF1 board ...
Page 27: ... 27 MEMO ...
Page 29: ...2 9 Table of accessories 1 2 4 5 6 7 8 9 10 11 3 12 ...
Page 59: ......
