Sanyo VPC-CG20 Service Manual page 6

7. Power Sequencer Description
For the overall configuration of the power sequenser, refer to the block diagram. This circuit block consists primarily of the power
sequencer block inside the ASIC.
The power sequencer have functions for receiving user operations which signify that the camera has been turned on and power
ON/OFF function.
Pin Signal
BSRST
zSYRSTI
SYCKI CLK32K
BAT_OFF
BATI
SYTEST
GND
PON[1] -
PON[0] PON
CHG_CNT
GPIOS[9]
GPIOS[8] TIMEOUT
SW3.2ON
GPIOS[7]
GPIOS[6] DC_IN_MONI
GPIOS[5] PANEL_OPEN
GPIOS[4] ZCARD
GPIOS[3]
KEY_1ST
GPIOS[2]
KEY_2ND
GPIOS[1] ZUSB_DET
GPIOS[0]
GREEN_LED
KSO[4]
RED_LED
KSO[3]
-
KSO[2]
SCAN OUT2
KSO[1] SCAN OUT1
KSO[0] SCAN OUT0
KSI[4]
SCAN_IN4
KSI[3] SCAN_IN3
KSI[2] SCAN_IN2
KSI[1] SCAN_IN1
KSI[0] SCAN_IN0
I/O
BOOT system reset signal
I
32 kHz clock input
I
I Battery OFF detection
-
I
O -
O VDD1.1, VDD1.8, VDD3, VDD5, ON/OFF signal
O -
O -
SW3.2 ON/OFF signal
O
O
DC IN detection
I
LCD panel open/close detection
I SD card detection
Key input 1st shutter
I
Key input 2nd shutter
I
I
USB detection
O Green LED lighting
O
Red LED lighting
-
O
Keyscan output signal
O
Keyscan output signal
O
Keyscan output signal
O
I Keyscan input signal
I Keyscan input signal
I Keyscan input signal
I Keyscan input signal
I Keyscan input signal
Table 2-1. Power Sequencer Port Specification
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