FUNCTIONAL DESCRIPTION (continued)

PULSE WIDTH MODULATOR 0

3FF8

V07 V06 V05 V04 V03 V02 V01 V00

*

000

00

000

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

converter (Pin1).

PULSE WIDTH MODULATOR 1

3FF9

V17 V16 V15 V14 V13 V12 V11 V10

*

000

00

000

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

PULSE WIDTH MODULATOR 2

3FFA

V27 V26 V25 V24 V23 V22 V21 V20

*

000

00

000

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

(Pin11).

PULSE WIDTH MODULATOR 3

3FFB

V37 V36 V35 V34 V33 V32 V31 V30

*

000

00

000

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

(Pin12).

PULSE WIDTH MODULATOR 4

3FFC

V47 V46 V45 V44 V43 V42 V41 V40

*

000

00

000

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

(Pin13).

PULSE WIDTH MODULATOR 5

3FFD

V57 V56 V55 V54 V53 V52 V51 V50

*

000

00

000

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

(Pin14).

PULSE WIDTH MODULATOR 6

3FFE

V67 V66 V65 V64 V63 V62 V61 V60

*

000

00

000

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

(Pin23).

PULSE WIDTH MODULATOR 7

3FFF

V77 V76 V75 V74 V73 V72 V71 V70

*

000

00

000

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 CHARACTER NUMBER>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 :

BK1 : horizontal shadowing.

(if BK1 = 0, the background is

transparent).

BK2 and BK0 must be equal to 0.

STV9425 - STV9425B - STV9426

8/15