Sanyo VPC-WH1BL - Xacti Camcorder - 720p, Руководство по обслуживанию

Страница: 9 / 68

– 9 –
Fig. 5-1 Internal Bus Communication System
2. Internal Communication Bus
The SYA block carries out overall control of camera operation by detecting the input from the keyboard and the condition of the
camera circuits. The 8-bit microprocessor reads the signals from each sensor element as input data and outputs this data to the
camera circuits (ASIC) or to the LCD display device as operation mode setting data. Fig. 5-1 shows the internal communication
between the 8-bit microprocessor, ASIC and SPARC lite circuits.
Table 5-1. 8-bit Microprocessor Port Specification
8-bit
Microprocessor
ASIC
SREQ
ASIC_SDO
ASIC_SDI
ASIC_SCK
MRST
PLLEN
60
61
50
-
S1 key input 51 KEY_1st I
-
56
NOT USED - -
VSS1
BATTERY
I UNREG voltage detection
58
59
ZSREQ I Serial communication request signal (CL required)
XOUT O 4M oscillation output
VDD1 - -
49
BAT_OFF I Battery OFF detection signal input
52
ZBOOT_COMREQ
I/O
ZBOOT output
53 ZRESET I SBM reset input
54 XCIN I 32 k oscillation input
55 XCOUT O 32 k oscillation output
57 XIN I
4M oscillation input
48 BAT_TMP
I
Battery temperature detection
Serial data output (CL required)
Camera temperature detection 62
INT_TEMP I
63
ASIC_SDI O
64
ASIC_SDO
I Serial data input (CL required)
3. Key Operaiton
For details of the key operation, refer to the instruction manual.
Table 5-2. Key Operation
0
0
1 2 3
SCAN
OUT
SCAN
IN
PLAY
RIGHT UP
1
2
VREC
TEST - -
LEFT
PW_TEST
MENU
DOWN
-
4
SET
-
POWER