Sanyo VPC-CG6EX - Page 9

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1-5. SYA CIRCUIT DESCRIPTION
1. Configuration and Functions
For the overall configuration of the SYA block, refer to the block diagram. The SYA block centers around a 8-bit microprocessor
(IC301), and controls camera system condition (mode).
The 8-bit microprocessor handles the following functions.
1. Operation key input, 2. Clock control and backup, 3. Power ON/OFF, 4. Storobe charge control, 5. Battery charge control (USB
charge).
Pin Signal
1
2
3
4
5
6
7
8
9
11
12
13
14
15
16
17
18
19
20
24
26
27
28
29
35
36
37
38
39
40
41
42
SCK
CARD
KEY MENU
CHG_DONE
HOT LINE
BAT_CHGERR
LCD_PWM
BAT_CHGOFF
VDD2
VF_LED (R)
VF_LED (G)
USB_SUSPWR
USB_HPWR
PON2
LENS_4M
NAND RESET
MAIN RESET
ASWON
USB_DET1
TRST
MROUT
BOOT_COMREQ
PRG ENA/DATA1
SW3.2 ON
SCAN IN1
SCAN IN0
VSS3
VDD3
RDSEL
CLK (SFW)
DATA0 (SFW)
P ON
I/O
O
I
I
I
I
I
O
O
-
O
O
O
O
O
O
O
O
O
I
O
I
I
I
O
I
I
-
-
I/O
I/O
I/O
O
Outline
Serial data clock output
SD card detection (L= SD card)
Key input MENU
Strobo condensor charge done detection (H → L= charge done)
Hot line request from ASIC
Battery charge status (H= charge error or full charge/L= charging)
LCD backlight illuminance adjustment
VDD
Red LED (H= lighting)
Green LED (H= lighting)
Power supply ON/OFF from USB (H= USB bus power OFF/L= ON)
USB high power/low power switching (H= USB high power/H= low power)
VDD 1.8 V D/D converter start-up signal (H= ON)
Lens driver IC standard clock output
OneNAND flash reset (L= reset)
System reset (MRST)
Gyro sensor quick charge (rising) property control (H= quick/L= normal)
JTAG and LEDA3 start-up reset (L= reset)
LCD panel open/close detection (MR sensor detection) (H= panel open)
Command request input (combine with BOOT output)
Debugger terminal
SW3.2 power ON/OFF signal (L= ON)
Keyscan input 1 (L= input)
Keyscan input 0 (L= input)
GND
VDD
Debugger terminal
Debugger terminal
Debugger terminal
VDD3, VDD1.2 ON/OFF signal (H= ON)
USB connection detection (L= connection)
10
VSS2
-
GND
21 BACKUP CTL
O
Backup battery charge control (H= charge)
22 AL3.2 ON
O
AL3.2 power ON/OFF (H= ON)
23 PLLEN
O
ASIC PLL oscillation ON/OFF (H= ON)
Battery charge ON/OFF control (H= CHG OFF or BAT OFF (USB insertion))
25 KEY_1st
I
Key input 1st SHUTTER (L= input)
30
ST_CHG
O
Strobo charge control (H= charge)
31
SEL
O
8-bit microprocessor power voltage switch (H= 3.2 V/L= 2.4 V)
32
SCAN IN3
I
Keyscan input 3 (L= input)
33
SCAN IN2
I
Keyscan input 2 (L= input)
34
KEY_PLAY
I
Key input PLAY (L= input)