cxa2050s Sony Electronics, cxa2050s Datasheet - Page 30

• Manufacturer Part Number: cxa2050s
• Description: Y/c/rgb/d For Pal/ntsc Color Tvs
• Manufacturer: Sony Electronics

PIN-PHASE
UP-CPIN
LO-CPIN
V-ASPECT
ZOOM SW
HBLKSW
V-SCROLL
JUMPSW
(4)
(4)
(4)
(6)
(1)
(1)
(6)
(1)
: Horizontal trapezoidal distortion compensation amount adjustment (V parabola wave
: Horizontal pin distortion compensation amount adjustment for top of picture
: Horizontal pin distortion compensation amount adjustment for bottom of picture
: Aspect ratio control (Gain control for sawtooth wave)
: Zoom mode ON/OFF switch for 16:9 CRT (25% of video cut)
: HBLK width control ON/OFF switch during 4:3 software full display mode on a 16:9
: Vertical picture scroll control during zoom mode on a 16:9 CRT
: Reference pulse jump mode ON/OFF switch (In addition to V-ASPECT control, sawtooth
center timing control)
0h = 0.8ms advance
7h = 0ms
Fh = 0.8ms delay
(V parabola wave gain control: Func.)
0h = +0.6V
7h =
Fh = –0.6V
(V parabola wave gain control: Func.)
0h = +0.5V
7h =
Fh = –0.5V
2Fh = 100%
3Fh = 112%
0 = Zoom OFF
1 = Zoom ON
CRT
0 = Control OFF
1 = Control ON
(DC component added to sawtooth wave AGC output to control ZOOMSW cut
timing.)
1Fh =
3Fh = +0.2V
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 from the VBLKW register.
0h = 75%
0h = –0.2V
0V
0V
0V
(compensation amount minimum)
(compensation amount maximum)
Horizontal size for bottom of picture increases.
(compensation amount minimum)
(0.7Vp-p 4:3 mode)
Horizontal size for bottom of picture decreases.
(compensation amount maximum)
16:9 CRT full
4:3 CRT full, amplitude: 1.32Vp-p
Scrolled toward top of screen by 32H and top of picture zoomed.
Scrolled toward bottom of screen by 32H and bottom of picture zoomed.
Horizontal size for top of picture increases.
(0.7Vp-p 4:3 mode)
Horizontal size for top of picture decreases.
Sawtooth wave amplitude: 1.32Vp-p
Sawtooth wave amplitude: 70%
HBLK pulse generated from HPIN.
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.
Horizontal size for top of picture increases; horizontal size for
bottom of picture decreases.
8.9ms from 4VDC VTIM
Horizontal size for top of picture decreases; horizontal size
for bottom of picture increases.
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CXA2050S