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The
system
control
section consists of the following four
microcomputers:
© Mode/mechanism control microcomputer CXP80116
¢ DDS microcomputer "PD7508BGB
¢ EVR microcomputer MC68HCOSN4FU
¢ AF microcomputer MC68HCOSC4FU
Reel rotation
Capstan rotation
Drum/capstan start
6)
H.M.S. counter
7) JOG VD insertion
8) Execution of various modes
—61—
1.
))
2)
3)
4)
2
Function description
Internal data communication control
Date/time measurement
LCD indication
Reading of key matrix
(White
balance,
electronic
shutter,
edit
search
+/-,
auto-lock, focus mode, counter reset, zero memory, title,
store, color/mode, back light compensation, date/forward,
time/set)
Operation modes
As shown in the table below, the operation mode is determined
according to the position of the power switch (camera/off/video)
and whether or not there is a main battery.
" 3-9-2,
DDS Microcomputer uPD7508BGB (IC651 on DK-2 Board)
3-9-3.
EVR Microcomputer MC68HCOSN4FU (IC601 on CV-8 Board)
1.
1)
2)
3)
Function description
EVR control
Auto white balance control
Electronic shutter
Main
Microcomputer
Mode
Battery
Power Switch
Power
Clock Mode
Main Functions
Camera/off/
me
video
oo) a
© Backup of title and t
ter dat
BACK UP
Lithium battery
intermittent
Ace
OF TEE and' tape Countes ala.
ae
© Clock count operation
Yes
Off
oscillation
© Serial communication with EVR and
mode/mechanism
control
micro-
;
ss sv
Continuous
computer
Vi
VIRON
Be
ides.
(main battery)
oscillation
© Indication to EVF
* Acceptance
of zero
memory
and
counter reset keys
© VTR ON functions + all camera
Sssv
Continuous
features
cAMON
es
Camera
| (main battery)
oscillation
© Indication control for white balance,
focus, titles, electronic shutter, etc.
3-9-4.
AF
1.
)
2)
3)
2
The
Functl
AF con
Power
Zoom 1
Auto fi
(A-AF:
high f:
luminance s
using exter
3.
The
Outlin:
frequen
2 MHz are:
digitally int:
the
evaluat
information
finding the
that:
Picture is ii
frequency «
increases
Lens
Foct
mot.
SS
Ra
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