LM2467 datasheet(40/43 Pages) NSC

40 / 43 page

Attribute Table and Enhanced Features (Continued)

TABLE 25. Enhanced Feature Descriptions (Continued)

Bits 21–18

Feature Description

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 26.

ATT4C7n (0x8507+n*4)

ATT4C6n (0x8506+n*4)

Reserved

Color 3-

XXXXXX

XXXXXXXX

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 -

XXXXXX

XXXX

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 color 0 which is displayed when the corresponding OSD pixel code is 00b.

Bits 17–9

These nine bits determine color 1 which is displayed when the corresponding OSD pixel code is 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 25.

Bits 31–22

Reserved and should be set to zero.

Bits 40–32

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

Bits 49–41

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

Bits 63–50

Reserved and should be set to zero.

TABLE 26. 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

0100b

0x8450–0x8453

0x8520–0x8527

0101b

0x8454–0x8457

0x8528–0x852F

0110b

0x8458–0x845B

0x8530–0x8537

0111b

0x845C–0x845F

0x8538–0x853F

1000b

0x8460–0x8463

0x8540–0x8547

1001b

0x8464–0x8467

0x8548–0x854F

1010b

0x8468–0x846B

0x8550–0x8557

1011b

0x846C–0x846F

0x8558–0x855F

1100b

0x8470–0x8473

0x8560–0x8567

1101b

0x8474–0x8477

0x8568–0x856F

1110b

0x8478–0x847B

0x8570–0x8577

1111b

0x847C–0x847F

0x8578–0x857F

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