LM1229YA National Semiconductor, LM1229YA Datasheet - Page 18

• Manufacturer Part Number: LM1229YA
• Description: I2C Compatible CMOS TV RGB and Deflection Processor
• Manufacturer: National Semiconductor

www.national.com
Tables
These are the tables which are referenced in the text.
TRANS
RGB IN
0.70V
0
0
1
1
ENABLE
ENABLE
logic 1
logic 0
OSD
0
1
0
1
Changing from
Normal video display.
Foreground and background determined by OSD
inputs.
Normal video display.
Foreground and background determined by OSD
inputs. OSD TRANS register is ignored.
(R
3.5V to 1.5V
EHT
digital
digital
Input
0.7V analog
0.7V analog
(DA = 1)
(DA = 0)
= 20k)
INPUT
OSD
any
@
@
or
FREQ1
(JP1)
ANALOG OSD (DA = 1)
logic 1
logic 0
float
0
0
0
1
1
1
TABLE 3. OSD Peak to Peak Amplitudes
TABLE 4. HEHT Compensation
TABLE 1. Scan Frequencies
FREQ2
OSD[1:0]
(JP2)
float
float
TABLE 2. OSD Modes
x
0
1
0
1
X X
X X
X X
0 0
0 1
1 0
1 1
∆Φ = 4.45% right
∆Φ = 4.43% left
∆Φ = 0
FREE RUN
∆Φ
18
(kHz)
3.81% right
3.17% right
2.56% right
15.7
28.1
31.4
33.8
37.9
45.1
48.0
3.81% left
3.17% left
2.56% left
AUX
X
X
X
X
X
X
1
48.077 (SVGA)
33.750, 33.716
DA
1,0
1,0
1,0
1,0
0
1
X
TV MODE
Normal video display.
Foreground and background determined by OSD
inputs.
Normal video display.
OSD window background is video, with contrast
from OSD TRANS register, 0x0A[6:0].
15.734
31.468
45.000
(kHz)
28.1
37.9
HEHT register = 0011b
HEHT register = 1xxxb
HEHT register = 0111b
PERCENT
OSD/AUX
Conditions
100
55
65
75
85
0
0
DIGITAL OSD (DA = 0)
0010b
0001b
0000b
0101b
0100b
0110b
OUTPUT
1.60V
1.89V
2.18V
2.47V
2.90V
OSD
0V
0V
OUTPUT
VIDEO
2.90V
2.90V
2.90V
2.90V
2.90V
2.90V
2.90V