CXA2095S
ZOOMSW
HBLKSW
(1)
(1)
: Zoom mode ON/OFF switch for 16:9 CRT
(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 Sawtooth wave amplitude: 70%
: HBLK width control ON/OFF switch during 4:3 software full display mode on a
16:9 CRT
0 = Control OFF HBLK pulse generated from HPIN.
1 = Control ON HBLK pulse generated as pulse generated from HPIN or as
pulse generated from HVCO and width adjusted.
Width adjustment is performed by the LEFT-BLK and RIGHT-
BLK registers.
V-SCROLL
(6)
: Vertical picture scroll control during zoom mode on a 16:9 CRT
(DC component added to sawtooth wave AGC output to control ZOOMSW cut
timing)
0H = –0.25V
Scrolled toward top of screen by 32H and top of picture
zoomed.
1FH = 0V
3FH = +0.25V Scrolled toward bottom of screen by 32H and bottom of picture
zoomed.
JUMPSW
(1)
: Reference pulse jump mode ON/OFF switch
(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
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.
UP-VLIN
LO-VLIN
LEFT-BLK
(4)
(4)
(4)
: Vertical linearity adjustment for top of picture
(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.
: Vertical linearity adjustment for bottom of picture
(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.
: HBLK width control for left side of picture when HBLKSW = 1
(Phase control for timing pulse generated from HVCO)
0H = +1.3µs
7H = 0µs
FH = –1.3µs
HBLK width maximum
Center HBLK: 13µs
HBLK width minimum
– 24 –
SONY [ SONY CORPORATION ]
