Analog Circuit Section Control; Gate Array Ic601 Control - Sony UP-960 Service Manual

4-4-9. Analog Circuit Section Control

IC505 controls followings.
Pin No I/O Explanation
IC505 O Selection of trap filter ON/OFF
pin 37
IC505 O Selection of NTSC/PAL
pin 36
IC505 O Selection of AGC function ON/OFF
pin 34
IC505 O Selection of SHARPNESS ON/OFF
pin 33
IC505 I Composite sync signal
pin 31

4-4-10. Gate Array IC601 Control

IC505 transfers operation mode data to gate array IC601. Start and end indication of CAPTURE (video signal fetch to the
memory) operation and COPY (memorized image is sent to the head.) operation are performed.
[CAPTURE Mode]
nK_CAPTURE
IC201-63pin
nREGEN
IC505-51pin
GASCID
IC505-49pin
GASCLK
IC505-50pin
nFETCH
IC505-72pin
nFETCHING
IC505-70pin
nFETCHSTOP
IC505-70pin
[COPY mode]
nK_COPY
IC201-62pin
nREGEN
IC505-51pin
GASCID
IC505-49pin
GASCLK
IC505-50pin
nCOPY
IC505-69pin
nCOPYING
IC505-59pin
nCOPYSTOP
IC505-60pin
4-12
Process of IC505
L : ON
H : OFF
L : When NTSC signal is inputted.
H : When PAL signal is inputted.
L : ON
H : OFF
L : ON
H : OFF
Measure horizontal sync frequency and
use it signal distinction.
operation mode data
transfer CLK
CAPTURE start
During CAPTURE
CAPTURE end
operation mode data
transfer CLK
COPY start
During COPY
COPY end
UP-960(UC)
UP-960CE(CE)