4.2. STRIP DESCRIPTOR

Each strip is defined by 2 bytes.

During the vertical retrace, an internal descriptor

address counter is initialised with the value P(12:0)

of ADDR register; on the trailing edge of vertical

synchro, the first strip descriptor is loaded into the

display controller; if it is an uniform strip, selected

color is displayed during the corresponding number

of scan lines; if it is a character strip, left margin

followed by text, followed by right margin are dis-

played during 10 scan lines ; the next descriptor is

then read, and the same process is repeated until

the last scan line. This information being given by

the vertical timing generator.

4.2.1 Uniform Strip

0

RTP

FFB

-

I

C2

C1

C0

SL7

SL6

SL5

SL4

SL3

SL2

SL1

SL0

RTP

:

Real Time Port

of VERT register is ”0”, along the complete

duration of the strip scan line. Not used in LCD

mode.

FFB

:

Field Flyback

0

R, G, B, I and Y outputs are defined by

corresponding bit of DISP for margin and

C(2:0) and I for active area

1 R, G, B, I and Y outputs are cleared during

Field Flyback, whatever other parameters are.

I

:

0 Fast Blanking Disable

1 Fast Blanking Enable

C(2:0)

:

G, R, B, value during the active area of the strip

(320 pixels)

SL(7:0) :

Number of scan lines of the strip, minimal

value is 1.

4.2.2. Character Strip

1

RTP

DE

ZY

C12

C11

C10

C9

C8

C7

C6

C5

C4

C3

C2

C1

RTP

:

Real Time Port

of VERT register ”0”, along the complete

duration of the strip line, during the whole strip.

DE

:

Display Enable

0 display off, the strip is displayed with margin

attributes IMG, GMG, RMG, BMG bit of DISP

register,

1 display on, the strip works as selected.

ZY

:

Vertical Zoom

0 normal display mode

1 all scan line are doubled, providing a vertical

zoom effect

C(12:1) :

Address of the first code to display

DESCRIPTOR

1

RTP

DE

ZY

C12 C11 C10

C9

C8

C7

C6

C5

C4

C3

C2

C1

LSB

MSB

C0

92

7

0

-

-

-

-

010

0

1

0

1

1100

10

1110

010

0

1

0

1

1100

1

EB

4

9

EFFECTIVE ADDRESS

5

0

F

1

BINARY ADDRESS

-

-

-

-

1010

111

1100

0

0

10101010

111

1100

0

BINARY DESCRIP.

PROG VALUE

AF

A8

EFFECTIVE ADDRESS

BINARY ADDRESS

BINARY DESCRIP.

PROG VALUE

Figure 15 : Character Strip Descriptor - First Character Address Selection

STV9410

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