Sanyo VPC-X1200BK, Руководство по обслуживанию, Страница: 10 / 53

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Table 5-1. 8-bit Microprocessor Port Specification
SCAN OUT0
SREQ
RESET Reset input
KEY_POWER
KEY_1st 1st switch input (using built-in pull-up)
ZBOOT_COMREQ
ZBOOT output
NOT USED
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ZJACKIN AV cable detection
Power key detection (using built-in pull-up)
BAT_OFF
Battery OFF detection signal input
Serial communication request signal
#CHG_DONE Strobo condensor charge done
XCIN Clock oscillation terminal for clock (32.768 kHz)
XCOUT
Clock oscillation terminal for clock
VSS1
GND
CF1 Clock oscillation terminal (connect to BACKUP 3.2 V)
NOT USED
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VDD1 Power
UNREG_SY
Battery voltage detection
NOT USED -
BAT_T
T terminal voltage input
ASIC_SDI
Serial data output
ASIC_SDO
Serial data input
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 and ASIC.
8-bit micro processor ASIC
MRST
ASICSDO
ASICSDI
ASICSCK
SREQ
communi-
cation
ZBOOT_COMREQ
setting of
external port
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Key scan output 0