LM1247 datasheet(41/48 Pages) NSC

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Attribute Table and Enhanced Features (Continued)

TABLE 24. Enhanced Feature Descriptions

Bits 21–18

Feature Description

0000b

Normal Display

0001b

Blinking

0010b

Shadowing

0011b

Bordering

0100b

RESERVED

0101b

RESERVED

0110b

RESERVED

0111b

RESERVED

1000b

Raised Box

1001b

Blinking and Raised Box

1010b

Depressed Box

1011b

Blinking and Depressed Box

1100b

Heavy Raised Box

1101b

Blinking and Heavy Raised Box

1110b

Heavy Depressed Box

1111b

Blinking and Heavy Depressed Box

FOUR COLOR ATTRIBUTE FORMAT

The address range for an attribute number, 0

≤ n ≤ 15, is provided in Table 25.

ATT4C7n (0x8507+n*4)

ATT4C6n (0x8506+n*4)

Reserved

Color 3-

XXXXXXXXXXXXX

C3B[2:1]

ATT4C5n (0x8505+n*4)

ATT4C4n (0x8504+n*4)

Blue

Color 3 - Green

Color 3 - Red

Color 2 - Blue

Color 2 - Green

Color2-Red

C3B0

C3G[2:0]

C3R[2:0]

C2B[2:0]

C2G[2:0]

C2R[2:0]

ATT4C3n (0x8503+n*4)

ATT4C2n (0x8502+n*4)

Reserved

Enhanced Features

Color 1 -

XXXXXXXXX

EFB[3:0]

C1B[2:1]

ATT4C1n (0x8501+n*4)

ATT4C0n (0x8500+n*4)

Blue

Color 1 - Green

Color 1 - Red

Color 0 - Blue

Color 0 - Green

Color0-Red

C1B0

C1G[2:0]

C1R[2:0]

C0B[2:0]

C0G[2:0]

C0R[2:0]

Bits 8–0

These nine bits determine the color0 which is displayed when the corresponding OSD pixel code is 00b.

Bits 17–9

These nine bits determine the color1 which is displayed when the corresponding OSD pixel code is a 01b.

Bits 21–18

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.

Bits 31–22

Reserved and should be set to zero.

Bits 40–32

These nine bits determine the color2 which is displayed when the corresponding OSD pixel code is a 10b.

Bits 49–41

These nine bits determine the color3 which is displayed when the corresponding OSD pixel code is an 11b.

Bits 63–50

Reserved and should be set to zero.

TABLE 25. Attribute Tables and Corresponding Addresses

Attribute Number, (n)

Two-Color Attribute Table Address

Four-Color Attribute Table Address

0000b

0x8440–0x8443

0x8500–0x8507

0001b

0x8444–0x8447

0x8508–0x850F

0010b

0x8448–0x844B

0x8510–0x8517

0011b

0x844C–0x844F

0x8518–0x851F

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