ST63156 datasheet(54/86 Pages) STMICROELECTRONICS

54 / 86 page

GS2,GS1. Global Size. These bits along with the

size bit (S) located in the Character format word

specify the character size for each line as defined

in Table 16.

Table 16. Horizontal Space Register Size

Setting.

GS2 GS1

Vertical Height

Horizontal

Length

18h

6 TDOT

36h

12 TDOT

18h

6 TDOT

54h

18 TDOT

36h

12 TDOT

54h

18 TDOT

36h

12 TDOT

72h

24 TDOT

Note: TDOT= 2/fOSC

HS5, HS0 . Horizontal Space . These bits deter-

mine the spacing between words if the Horizontal

Space Enable bit (HSE) located in the space charac-

ter is a one. The space between words is then equal

to the width of the space character plus the number

of tdots specified by the Horizontal Space bits. The 6

bits can specify one of 64 spacing values ranging

from 2/fosc to 128/fosc. The formula is shown below

for the smallest size character(18h). If larger size

characters are being displayed the spacing between

words will increase proportionately. Multiply the

value below by 2, 3 or 4 for character sizes of 36h,

54h and 72h respectively.

Space between words (not including the space

character)=2/fosc(1+2

5(HS5)+24(HS4)+23(HS3)

2(HS2)+ 21(HS1)+20(HS0))

Background Control Register

This register sets up two possible backgrounds.

The background select bit (BGS) in the format or

space character will determine which background

is selected for the current word.

HSR

Horizontal Space Register

(13h - Page 6, Write Only)

D7 D6 D5 D4 D3 D2 D1 D0

HS5-HS0 = Horizontal Space

GS1 = Global Size Bit 1

GS2 = Global Size Bit 2

Figure 65. Horizontal Space Register

ON-SCREEN DISPLAY (Continued)

BCR

Backround Control Register

(14h - Page 6, Write Only)

D7 D6 D5 D4 D3 D2 D1 D0

BK0 = Backround Enable Bit 0

BK1 = Backround Enable Bit 1

B0 = B Colour Backround Bit 0

B1 = B Colour Backround Bit 1

G0 = G Colour Backround Bit 0

G1 = G Colour Backround Bit 1

R0 = R Colour Backround Bit 0

R1 = R Colour Backround Bit 1

Figure 66. Background Control Register

R1,R0,G1,G0,B1,B0. Background Colour.

These bits define the colour of the specified back-

ground, either background 1 or background 0 as

defined in Table 17.

Table 17. Background Register Colour

Setting.

Colour

Black

Blue

Green

Cyan

100

Red

Magenta

Yellow

White

ST63140,142,126,156

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