LM1276AAA National Semiconductor, LM1276AAA Datasheet - Page 41

• Manufacturer Part Number: LM1276AAA
• Description: 150 MHz I2C Compatible RGB Preamplifier with Internal 512 Character OSD ROM, 512 Character RAM and 4 DACs
• Manufacturer: National Semiconductor

RSV
Pre-Amplifier Interface Registers
Highlight Contrast TEXT:
Peak Control PIC
Highlight Contrast PIC:
Peak Control MOVIE
Highlight Contrast MOVIE:
Auto Size Registers
Horizontal Front Porch Duration:
Bits 6–0
Bit 7
Bits 2–0
Bits 7–3
Bits 6–0
Bit 7
Bits 2–0
Bits 7–3
Bits 6–0
Bit 7
Bits 10–0
RSV
Reserved
RSV
H_FP1 (0x8581)
RSV
These bits determine the amount of Highlight Contrast for the TEXT mode.
Reserved and should be set to zero.
These bits determine the amount of overshoot for the PIC mode
Reserved and should be set to zero.
These bits determine the amount of Highlight Contrast for the PIC mode.
Reserved and should be set to zero.
These bits determine the amount of overshoot for the MOVIE mode
Reserved and should be set to zero.
These bits determine the amount of Highlight Contrast for the MOVIE mode.
Reserved and should be set to zero.
This is an 11-bit wide register that records the lowest measured value of the horizontal front porch
during video detect. When no video is detected, this register should return a value of zero. Once
measurement is completed and the auto size enable bit has cleared itself back to 0, the measured
data is ready to be read by the microcontroller. Reading this register before that may give
erroneous results. This register resets to default values, ready to record new measured values
when the auto size enable bit is set again.
Res’d
Res’d
Res’d
RSV
RSV
RSV
RSV
Reserved
Reserved
RSV
RSV
PEAKCNTLMOV (0x85CC)
PEAKCNTLPIC (0x85CA)
HLCONTRTXT (0x85CD)
HLCONTRTXT (0x85C9)
HLCONTRPIC (0x85CB)
HILIGHT_CONTRAST[6:0]
HILIGHT_CONTRAST[6:0]
HILIGHT_CONTRAST[6:0]
HILIGHT_CONTRAST
HILIGHT_CONTRAST
HILIGHT_CONTRAST
(Continued)
41
Horizontal Front Porch Duration
TEXT MODE OVERSHOOT
PIC MODE OVERSHOOT
HFP[10:0]
MM_OVRSHT[2:0]
PM_OVRSHT[2:0]
H_FP0 (0x8580)
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