STV5438(2004) 데이터 시트보기 (PDF) - STMicroelectronics

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STV5438
(Rev.:2004)

MONOCHIP TELETEXT AND VPS DECODER WITH 8 INTEGRATED PAGES

STMicroelectronics 

STV5348

Register

Function

Bit(s)

Description

PON (D0, D1)

Picture on (IN: D0, OUT: D1)

R5

Address

05H

Display control for

normal operation

TEXT (D2, D3)

COR (D4, D5)

BKGND (D6, D7)

Text on (IN: D2, OUT: D3)

Contrast reduction on (IN: D4, OUT: D5)

Background color on (IN: D6, OUT: D7)

IN / OUT

Enable inside/outside the box

R6

Address

06H

Display control for

news-flash subtitle

generation

See R5

See R5

BOX ON 0, 1-23,24 The "boxing" function is enabled on row 0,1-23 and

(D0, D1, D2)

24 by D0, D1 and D2 set to one.

TOP / BOTTOM X0 = Normal

Single / Double Height 01 = double height Rows 0 to 11

R7

(D4/D3)

11 = double height Rows 12 to 23

Address

07H

Display mode

Conceal / Reveal (D5) Conceal Reveal Function

t(s) Cursor ON/OFF (D6) Cursor position given by row/column value of R9/R10

c STATUS ROW

u BTM / TOP (D7)

The row 24 is displayed before the "Main text Area"

(lines 0-23) or after (D7 = 0).

d VPS Enable (D4) D4 = 1 Enable VPS acquisition and DV signal output.

ro Clear Memory (D3) D4 = 1 Clear memory.

P R8

Memory access

Chapter selected with A2A1A0 (D2, D1, D0) R4.

te Chapter Address

le (D2, D1, D0)

Chapter selection

so R9 to R11A

b Address

08H to 0BH (1)

Active row address (R9), active column address (R10).

Data contained in R11A read (written) from (to) memory by microprocessor via I2C.

t(s) - O R11B

Address

roduc 0BH (1)

Status

VCS QUAL (D0)

DATA QUAL (D1)

50/60Hz (D7)

Good VCS quality signal detected (D0 = 1).

Bad VCS quality signal detected (D0 = 0).

Good TELETEXT signal (D1 = 1).

Bad TELETEXT signal (D1 = 0).

If D1 = 0 frame frequency is 50Hz

(only valid with good VCS)

Obsolete P Note: 1. Reading of R11A or R11B is determined by register 0, bit D0. However, write operation is always performed on R11A register.

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