LM1247 National Semiconductor, LM1247 Datasheet - Page 41

• Manufacturer Part Number: LM1247
• Description: 150 MHz I2C Compatible RGB Preamplifier with Internal 512 Character OSD ROM, 512 Character RAM and 4 DACs
• Manufacturer: National Semiconductor

Attribute Table and Enhanced Features
FOUR COLOR ATTRIBUTE FORMAT
The address range for an attribute number, 0 ≤ n ≤ 15, is provided in Table 25.
Bits 8–0
Bits 17–9
Bits 21–18
Bits 31–22
Bits 40–32
Bits 49–41
Bits 63–50
Attribute Number, (n)
C3B0
C1B0
Blue
Blue
X
X
Bits 21–18
0000b
0001b
0010b
0011b
0000b
0001b
0010b
0100b
0101b
1000b
1001b
1010b
0011b
0110b
1011b
1100b
1101b
0111b
1110b
1111b
X
X
Color 3 - Green
Color 1 - Green
These nine bits determine the color0 which is displayed when the corresponding OSD pixel code is 00b.
These nine bits determine the color1 which is displayed when the corresponding OSD pixel code is a 01b.
These are the enhanced feature (EF) bits which determine which feature is applied to the displayed character.
The features and their corresponding codes are shown in Table 24.
Reserved and should be set to zero.
These nine bits determine the color2 which is displayed when the corresponding OSD pixel code is a 10b.
These nine bits determine the color3 which is displayed when the corresponding OSD pixel code is an 11b.
Reserved and should be set to zero.
C3G[2:0]
C1G[2:0]
X
ATT4C5n (0x8505+n
ATT4C3n (0x8503+n
X
ATT4C1n (0x8501+n
ATT4C7n (0x8507+n
Normal Display
Blinking
Shadowing
Bordering
RESERVED
RESERVED
RESERVED
RESERVED
Raised Box
Blinking and Raised Box
Depressed Box
Blinking and Depressed Box
Heavy Raised Box
Blinking and Heavy Raised Box
Heavy Depressed Box
Blinking and Heavy Depressed Box
X
X
Two-Color Attribute Table Address
TABLE 25. Attribute Tables and Corresponding Addresses
Reserved
X
X
Color 3 - Red
Color 1 - Red
C3R[2:0]
C1R[2:0]
TABLE 24. Enhanced Feature Descriptions
0x844C–0x844F
0x8448–0x844B
*
*
*
*
0x8440–0x8443
0x8444–0x8447
4)
4)
4)
4)
X
X
Reserved
X
X
X
X
Color 2 - Blue
Color 0 - Blue
41
C2B[2:0]
C0B[2:0]
Feature Description
X
X
(Continued)
X
X
ATT4C6n (0x8506+n
X
ATT4C4n (0x8504+n
ATT4C2n (0x8502+n
ATT4C0n (0x8500+n
Color 2 - Green
Color 0 - Green
Four-Color Attribute Table Address
Enhanced Features
C2G[2:0]
C0G[2:0]
X
EFB[3:0]
0x8508–0x850F
0x8518–0x851F
0x8500–0x8507
0x8510–0x8517
X
*
*
*
*
4)
4)
4)
4)
X
Color 2 - Red
Color 0 - Red
C2R[2:0]
C0R[2:0]
Color 1 -
Color 3-
C3B[2:1]
C1B[2:1]
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