STV9432 datasheet(11/18 Pages) STMICROELECTRONICS

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STV9432

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Control Codes

Control codes must be followed by a displayable

code, except for RTN & EOL. They must not be

used twice consecutively without a displayable

code between them.

The control code CALL is preceded by an address

byte. The control codes are not displayed except if

mentioned.

Codes 0 to 7 (0h to 7h):

COL0 to COL7 codes select 1 byte among 8

within the CLUT in RAM. The block selection is

fixed by CLU3 bit of the active character descriptor

(see Table 1 and Table 2).

Code 8 (08h):

Multicolor character precode, must be followed by

a multicolor character number from F0h to FFh.

Code 9 (09h):

NOP: no operation is performed, can be used to

spare a location in RAM for an active control code.

Codes 10 to 12 (0Ah to 0Ch):

FLIPS:

HFLIP(0Bh) Horizontal Flip code flips horizontaly

the following displayable code.

VFLIP(0Ah) Vertical Flip code flips verticaly the

following displayable code.

DFLIP(0Ch) Horizontal & Vertical Flip code flips

horizontaly and verticaly the following displayable

code.

Code 13 (0Dh):

CALL, this control code switches the display of the

next character to the code address given by the

next byte as follows:

Code 14 (0Eh):

RTN: return to the CALL + 1 code location (see

Note).

Code 15 (0Fh):

EOL, end of line terminates the display of the cur-

rent row.

ROM Character Codes

Codes 16 to 255 (10h to FFh):

ROM monochrome character codes. The charac-

ter shapes are 12x18 pixel matrix described in Fig-

ure 5 .

Codes 256 to 272 (F0h to FFh):

ROM multicolor character codes. They must be

preceded by the multicolor pre-code 08h. The

character

shapes

are

12x18

pixel

matrix

described in Figure 5.

8.2 - OSD LOOK-UP TABLE

Color look-up table [CLUT] is read/write RAM

table. Mapping address is described in 6.3.2 I2C

Registers Mapping.

The CLUT is splitted into 2 blocks of 8 bytes. Each

byte contains foreground and background infor-

mations as described below:

Each block may store a different set of colors. One

block of colors may be used for the normal items

of the menu while the second block, with brighter

colors, may be used for selected items of the

menu.

The block selection is done by programming bit

CLU3 of CLU[3:0] of the character descriptor (see

Table 2). It remains selected for the whole row.

Bit CLU2, CLU1 and CLU0 of CLU[3:0] of the

character descriptor select the active color at the

beginning of the row.

The active color can be modified along the row,

using 8 control codes COL0 to COL7.

Each control code (COL0 to COL7) activates a

dedicated color byte in the CLUT as described in

Table 2.

CALL CODE

(odd

@) MSB

0

011

01

ADDRESS BYTE

(even

@) LSB

A8 A7 A6 A5 A4 A3 A2 A1

A[9:1]

:

Address of the next code to

be used (A0 = 0 only even

addresses), in low half part of

RAM.

Notes:

CALL and RTN code must be used simultane-

ously.

CALL and RTN codes are displayed as a

SPACE character.

CALL and RTN codes must be placed at odd

addresses. They may be preceded by a NOP

to place them at the right position.

TRA

BR

BG

BB

FL

FR

FG

FB

TRA

FL

BR, BG, BB

FR, FG, FB

:

Transparent background

Flashing foreground

Background color

Foreground color

Số phần tương tự - STV9432

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STMicroelectronics	STV9432TA	227Kb / 24P	100MHz OSD FOR MONITOR INCLUDING BEAM CURRENTS & VIDEO TIMING ANALYZER
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STMicroelectronics	STV9432TA	227Kb / 24P	100MHz OSD FOR MONITOR INCLUDING BEAM CURRENTS & VIDEO TIMING ANALYZER
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