FUNCTIONAL DESCRIPTION (continued)

1.4.2 - Color Register (page attributes)

11

10

9876

210

R

G

B

R

G

B

//

//

//

R

G

B

SBC

FBC

BCC

SBC

: screen background color

FBC

: character border color

BCC

: character background color

The output of this register is synchronized by the horizontal synchronism.

1.4.3 - Control Register

11

10

9876

543210

C11

C10

C9

C8

C7

C6

C5

C4

C3

C2

C1

C0

C0

: C0 = 0 : mixed mode

C0 = 1 : full page mode

C1

: C1 = 0 : the character background is controlled by BE (see character word description)

C1 = 1 : all displayed character backgrounds are disabled

C2

: C2 = 0 : display off

C2 = 1 : display on

C3

: C3 = 0 : the characters are colored according to the character attribute and the color register

values (i.e. CBACKG and CBORD)

C3 = 1 : the character foreground, border and background colors are all set to the character

attribute value (see paragraph 1.2). This option is mainly intended for full page mode,

CVBS or Y/C output

C4

: C4 = 0 : 1.0 second blinking period

C4 = 1 : 0.5 second blinking period

C[6:5] : C[6:5] = 00

01

10

11

:

:

:

:

blinking off

0.75 blinking duty cycle

0.5 blinking duty cycle

0.25 blinking duty cycle

C7

: C7 = 0

C7 = 1

an external input composite sync is taken from the CSYNC pin

the sync is extracted by the STV5730A.The currently active sync is output on the

CSYNC pin

C8

: C8 = 0 : the standard is NTSC, 60Hz

C8 = 1 : the standard is PAL or SECAM with M6 = 0, 50Hz

C9

: C9 = 0 : character color encoding is disabled

C9 = 1 : character color encoding is enabled

C10

: C10 = 0 : the luminance levels are generated internally

C10 = 1 : the luminance levels are provided by the LESCREEN and LECHAR input pins.

C11

: C11 = 0 : Video Full Page Mode. A stable full page mode text is displayed while the screen

background is the unlocked video input signal.

C11 = 1 : Normal full page mode is active.

The output of this register is synchronized by the horizontal sync (except C7). The RESET message clears

this register.

STV5730A

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