STV5347D 데이터 시트보기 (PDF) - STMicroelectronics

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STV5347D

MONOCHIP TELETEXT AND VPS DECODER WITH 4 INTEGRATED PAGES

STMicroelectronics 

STV5347 - STV5347/H - STV5347/T

FUNCTIONAL DESCRIPTION (continued)

IV - I2C Bus Register Map (continued)

IV.1 - Registers Functions (continued)

Register

Function

Bit(s)

Description

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

(D0, D1, D2)

D0, D1 and D2 set to one.

R7

Address

07H

Display mode

TOP / BOTTOM X0 = Normal

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

(D4/D3)

11 = double height Rows 12 to 23

Conceal / Reveal (D5) Conceal Reveal Function

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

STATUS ROW

BTM / TOP (D7)

The row 24 is displayed before the “Main text Area” (lines

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

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

Clear Memory (D3) D4 = 1 Clear memory.

R8

Memory access

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

Chapter Address

(D2, D1, D0)

Chapter selection

R9 to R11A

Address

08H to 0BH*

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

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

R11B

Address

0BH*

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)

* Reading of R11A or R11B is de termined by register 0, bit D0. However, write operation is a lways performed on R11A register.

Table 4 : Register R3

START

COLUMN

0

1

2

3

4

5

6

PRD4

Do care magazine

Do care page tens

Do care page units

Do care hours tens

Do care hours units

Do care minutes tens

Do care minutes units

PRD3

HOLD

PT3

PU3

X

HU3

X

MU3

PRD2

MAG2

PT2

PU2

X

HU2

MT2

MU2

PRD1

MAG1

PT1

PU1

HT1

HU1

MT1

MU1

PRD0

MAG0

PT0

PU0

HT0

HU0

MT0

MU0

The abbreviations have the same significance as in Table 1 with the exception of the “DO CARE” entries. It is only when this bit is “1”

that the corresponding digit is taken into consideration on page request. For example, a page defined as ”normal” or one defined as

“timed” may be selected.

If “HOLD” is low the page is held. The addressing of successive bytes via the I2C is automatic.

V - Character Sets

The complete character set with 8-bit decoding is

given in Table 5.

Characters in columns 0 and 1 are normally dis-

played as blanks. Black dots represent the charac-

ter shape whereas white dots represent the

background.

Each character can be identified by a pair of corre-

sponding row and column integers : for example

the character “3” may be indicated by 3/3.

A rectangle may be represented as follows :

The characters 8/6, 8/7, 9/5, 9/7 are used as spe-

cial characters, always in conjunction with 8/5.

The 13 national characters are placed in columns

with bit 8 = 0.

11/22

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