SED1330F Datasheet, PDF (107/148 Pages) List of Unclassifed Manufacturers – LCD Controller ICs

7.1
7.0 TV Mode (SED1336 only)
The horizontal sync signal waveforms are shown in
Figure 61, and the timing parameters and VSD output
states, in Table 28. Note that SNC and VSD are both
high-impedance when in LCD mode.
SNC
High
impedance
High
impedance
VSD
Display
interval
High
impedance
Pre-
blanking
interval
Front
porch
Horizontal
sync
pulse
Back porch
Post-
blanking
interval
Low or high
impedance
Display
interval
Figure 69. Horizontal sync waveforms
Table 28. Horizontal sync characteristics
Parameter
Pre-blanking
Interval
NTSC
system timing
29CK
PAL
system timing
29CK
VSD
High
output level impedance
Front Porch
10CK
10CK
LOW
Horizontal
Sync Pulse
29CK
29CK
LOW
Back Porch
Post-blanking
Interval
28CK
36CK
Display
Interval
256CK
34CK
LOW
30CK
256CK
High
LOW or High
impedance impedance
268-0.4 _{S-MOS Systems, Inc. • 2460 North First Street • San Jose, CA 95131 • Tel: [phone] • Fax: [phone]}