Sanyo VPC-PD2BK 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
zSYRSTI BSRST
CLK32K
SYCKI
-
BATI
PON[1] -
PON[0] PON
CHARGE_EN
GPIOS[9]
USB_HPWR
GPIOS[8]
GPIOS[7] SW3.2ON
GPIOS[6] USB_SUSPEND
GPIOS[5]
LED_SELF
GPIOS[4] ZCARD
GPIOS[3]
KEY_1ST
GPIOS[2]
KEY_2ND
GPIOS[1] ZUSB_DET
GPIOS[0] LED_CHG
KSO[4]
-
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
I Power sequencer block initializataion signal
32 kHz clock input
I
I -
O -
O VDD1.1, VDD1.8, VDD3 control signal
Camera charge control charge permission
O
Camera charge control
O
O SW3.2 V power ON/OFF control
I Camera charge control
I
Self LED lighting control
I SD card detection
Key input 1st shutter
I
Key input 2nd shutter
I
I
USB detection
Charge LED lighting control
O
O -
-
O
Keyscan output signal
O
Keyscan output signal
O
Keyscan output signal
O
I Keyscan input signal
I Keyscan input signal
Keyscan input signal
I
Keyscan input signal
I
I Keyscan input signal
Table 2-1. Power Sequencer Port Specification
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Outline