CXA2095 Sony Corporation, CXA2095 Datasheet - Page 24

• Manufacturer Part Number: CXA2095
• Description: Y/C/RGB/Sync/Deflection for Color TV
• Manufacturer: Sony Corporation

ZOOMSW
HBLKSW
V-SCROLL
JUMPSW
UP-VLIN
LO-VLIN
LEFT-BLK
(1)
(1)
(6)
(1)
(4)
(4)
(4)
: Zoom mode ON/OFF switch for 16:9 CRT
: HBLK width control ON/OFF switch during 4:3 software full display mode on a
: Vertical picture scroll control during zoom mode on a 16:9 CRT
: Reference pulse jump mode ON/OFF switch
: Vertical linearity adjustment for top of picture
: Vertical linearity adjustment for bottom of picture
: HBLK width control for left side of picture when HBLKSW = 1
(Top and bottom of V sawtooth wave squeezed and 25% of picture cut)
0 = Zoom OFF Sawtooth wave amplitude: 1.23Vp-p
1 = Zoom ON
16:9 CRT
0 = Control OFF HBLK pulse generated from HPIN.
1 = Control ON HBLK pulse generated as pulse generated from HPIN or as
(DC component added to sawtooth wave AGC output to control ZOOMSW cut
timing)
0H = –0.25V
1FH = 0V
3FH = +0.25V
(In addition to V-ASPECT control, sawtooth wave gain control performed for
100% of VBLK interval and 67% of picture interval)
0 = Jump mode OFF
1 = Jump mode ON
(Secondary component gain control for sawtooth wave added to sawtooth wave
AGC output)
0H = 100% (Bottom/top of picture)
FH = 115% (Bottom/top of picture) Top of picture compressed.
(Tertiary component gain control for sawtooth wave added to sawtooth wave
AGC output)
0H = 100% (Bottom/top of picture)
FH = 85% (Bottom/top of picture) Bottom of picture compressed.
(Phase control for timing pulse generated from HVCO)
0H = +1.3µs
7H = 0µs
FH = –1.3µs
On a 4:3 CRT, jump mode expands the sawtooth wave amplitude to 112%
with V-ASPECT; on a 16:9 CRT, jump mode compresses the sawtooth
wave amplitude to 75% with V-ASPECT. The V blanking width is expanded
at both the top and bottom of the picture. Blanking for the bottom of the
picture starts 251H after VTIM, and blanking for the top of the picture can
be varied as the blanking width after the reference pulse by the VBLKW
register.
Sawtooth wave amplitude: 70%
Scrolled toward top of screen by 32H and top of picture
zoomed.
Scrolled toward bottom of screen by 32H and bottom of picture
zoomed.
HBLK width maximum
Center HBLK: 13µs
HBLK width minimum
pulse generated from HVCO and width adjusted.
Width adjustment is performed by the LEFT-BLK and RIGHT-
BLK registers.
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CXA2095S