FUNCTIONAL DESCRIPTION (continued)

The last fourth registers described below are only

available with the STV9422 :

PULSE WIDTH MODULATOR 0 (STV9422)

3FF8

V07

V06

V05

V04

V03

V02

V01

V00

*

0

0

00000

0

V0[7:0] : Digital value of the 1

converter (Pin1).

PULSE WIDTH MODULATOR 1 (STV9422)

3FF9

V17

V16

V15

V14

V13

V12

V11

V10

*

0

0

00000

0

V1[7:0] : Digital value of the 2

PULSE WIDTH MODULATOR 2 (STV9422)

3FFA

V27

V26

V25

V24

V23

V22

V21

V20

*

0

0

00000

0

V2[7:0] : Digital value of the 3

(Pin11).

PULSE WIDTH MODULATOR 3 (STV9422)

3FFB

V37

V36

V35

V34

V33

V32

V31

V30

*

0

0

00000

0

V3[7:0] : Digital value of the 4

(Pin12).

PULSE WIDTH MODULATOR 4 (STV9422)

3FFC

V47

V46

V45

V44

V43

V42

V41

V40

*

0

0

00000

0

V4[7:0] : Digital value of the 5

(Pin13).

PULSE WIDTH MODULATOR 5 (STV9422)

3FFD

V57

V56

V55

V54

V53

V52

V51

V50

*

0

0

00000

0

V5[7:0] : Digital value of the 6

(Pin14).

PULSE WIDTH MODULATOR 6 (STV9422)

3FFE

V67

V66

V65

V64

V63

V62

V61

V60

*

0

0

00000

0

V6[7:0] : Digital value of the 7

(Pin23).

PULSE WIDTH MODULATOR 7 (STV9422)

3FFF

V77

V76

V75

V74

V73

V72

V71

V70

*

0

0

00000

0

V7[7:0] : Digital value of the 8

(Pin24).

Note : * is power on reset value.

II - Descriptors

SPACING

MSB

0

-

-

-

-

-

-

-

LSB

SL7

SL6

SL5

SL4

SL3

SL2

SL1

SL0

SL[7:0] : The number of the scan lines of the

spacing strip (1 to 255).

CHARACTER

MSB

1

DE

-

ZY

-

-

C9

C8

LSB

C7

C6

C5

C4

C3

C2

C1

0

C[9:0] : The address of the first character code of

the strip (even).

DE

: Display enable :

- DE = 0, R = G = B = 0 and FBLK = FBK

(display control register) on whole strip,

- DE = 1, display of the characters.

ZY

: Zoom, ZY = 1 all the scan lines are

repeated once.

III - Code Format

MSB

SET

CHARACTER NUMBER

LSB

BK3 BK2 BK1 BK0

FL

RF

GF

BF

SET

: The set CHARACTER NUMBER

- If SET = 0 : ROM character,

- If SET = 1 :

• If CHARACTER NUMBER is 0 to

25, a user redefinable character

(UDC) located in RAM at the

address equal to :

38 x CHARACTER NUMBER,

• If CHARACTER NUMBER is 26 to

63, space character,

• If CHARACTERNUMBER >63, end

of line.

FL

: Flashing attribute (the flashing mode

is defined in the DISPLAY CONTROL

register).

RF, GF, BF : Foreground color.

BK[3:0]

: Background :

- If BK3 = 0, BK[2:0] = background

color R, G and B,

- If BK3 = 1, shadowing :

• BK2 : vertival shadowing,

• BK1 : horizontal shadowing.

(if BK2 = BK1 = 0, the background is

transparent).

STV9422 - STV9424

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