Sanyo VPC-PD1EXBK, Service Manual

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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
zSYRSTI
SYCKI
BATI
PON[1]
PON[0]
GPIOS[9]
GPIOS[8]
GPIOS[7]
GPIOS[5]
GPIOS[4]
GPIOS[3]
GPIOS[2]
GPIOS[1]
GPIOS[0]
KSO[4]
KSO[0]
KSI[3]
KSI[2]
KSI[1]
KSI[0]
BSRST
CLK32K
-
-
PON
CHARGE_EN
USB_HPWR
SW3.2ON
LED_SELF
ZCARD
KEY_1ST
KEY_2ND
ZUSB_DET
LED_CHG
-
SCAN OUT0
SCAN_IN3
SCAN_IN2
SCAN_IN1
SCAN_IN0
I/O
I
I
I
O
O
O
O
O
I
I
I
I
I
O
O
O
I
I
I
I
Outline
Power sequencer block initializataion signal
32 kHz clock input
-
-
VDD1.1, VDD1.8, VDD3 control signal
Camera charge control charge permission
SW3.2 V power ON/OFF control
Self LED lighting control
SD card detection
Key input 1st shutter
Key input 2nd shutter
USB detection
Charge LED lighting control
Keyscan output signal
Keyscan input signal
Keyscan input signal
Keyscan input signal
Keyscan input signal
-
GPIOS[6] USB_SUSPEND I Camera charge control
KSO[3]
- O
-
KSO[2]
SCAN OUT2 O
Keyscan output signal
KSO[1] SCAN OUT1
O
Keyscan output signal
Camera charge control
KSI[4]
SCAN_IN4 I Keyscan input signal
Table 2-1. Power Sequencer Port Specification