STV0118

PAL/NTSC HIGH PERFORMANCE DIGITAL ENCODER

May 1997

PRELIMINARY DATA

SO28

(Plastic Micropackage)

ORDER CODE : STV0118

This is advance information on a new product now in development or undergoing evaluatio n. Details are subject to change without notice.

NTSC-M, PAL-B, D, G, H, I, N, M, PLUS
NTSC-4.43 ENCODING (OPTIONAL PEDES-
TAL IN ALL STANDARDS)

SMALL AND ECONOMICAL SO28 PACKAGE

LINE SKIP/INSERT CAPABILITY SUPPRES-
SING THE NEED FOR AN EXTERNAL VCXO,
THUS REDUCING APPLICATION COST

4 SIMULTANEOUS ANALOG OUTPUTS : RGB +
CVBS, or S-VHS (Y/C) + CVBS1 + CVBS2

54MHz INPUT MULTIPLEX INTERFACE FOR
DOUBLE

ENCODING

APPLICATIONS

(TO BE ABLE TO ENCODE OR NOT THE OSD
CONTENT OF THE VIDEO INPUT STREAM)

CROSS-COLOR REDUCTION BY SPECIFIC
TRAP FILTERING ON LUMA WITHIN CVBS
FLOW

CLOSED CAPTIONING, CGMS ENCODING
AND TELETEXT ENCODING

ITU-R/CCIR601 ENCODING WITH EASILY
PROGRAMMABLE COLOR SUB-CARRIER
FREQUENCIES

DIGITAL

FRAME

SYNC

INPUT/OUTPUT

(ODDEV/VSYNC),

PROGRAMMABLE

PO-

LARITY AND RELATIVE POSITION

DIGITAL HORIZONTAL SYNC INPUT/OUPUT
(HSYNC), PROGRAMMABLE POLARITY AND
RELATIVE POSITION

DIGITAL LINE OR FRAME SYNC EXTRAC-
TION FROM ITU-R/CCIR656 / D1 DATA

MASTER

OPERATION

MODE,

PLUS

6 SLAVE MODES

INTERLACED/NON-INTERLACED

OPERA-

TION MODES

FULL OR PARTIAL VERTICAL BLANKING

LUMA FILTERING WITH 2X OVERSAMPLING &
SINY/Y CORRECTION

CHROMINANCE FILTERING WITH 4X OVER-
SAMPLING TO EITHER 1.1MHz, 1.3MHz,
1.6MHz or 1.9MHz

WIDE CHROMINANCE BANDWIDTH FOR
RGB ENCODING (2.45MHz)

24-BIT DIRECT DIGITAL FREQUENCY SYN-
THESIZER FOR COLOR SUBCARRIER

PROGRAMMABLE RESET OF COLOR SUB-
CARRIER PHASE (4 MODES)

EASY CONTROL VIA FAST I

C BUS

TWO I

C ADDRESSES

AUTOTEST OPERATION MODE

(ON-CHIP

COLOR BAR PATTERN 100/0/75/0)

CMOS TECHNOLOGY WITH 3.3V POWER
SUPPLY

APPLICATIONS : SATELLITE, CABLE & TER-
RESTRIAL DIGITAL TV DECODERS, MULTIME-
DIATERMINALS, DVD PLAYERS

1/42

CONTENTS

Page

GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PIN INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

II.1

PIN CONNECTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

II.2

PIN DESCRIPTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

III

BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

FUNCTIONAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IV.1

DATA INPUT FORMAT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IV.2

VIDEO TIMING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IV.3

RESET PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IV.4

MASTER MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IV.5

SLAVE MODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IV.5.1

Synchronization onto a Line Sync Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IV.5.2

Synchronization onto a Frame Sync Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IV.5.3

Synchronization onto Data-embedded Sync Words . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IV.6

INPUT DEMULTIPLEXER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IV.7

SUB-CARRIER GENERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IV.8

BURST INSERTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IV.9

LUMINANCE ENCODING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IV.10

CHROMINANCE ENCODING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IV.11

COMPOSITE VIDEO SIGNAL GENERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IV.12

RGB ENCODING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IV.13

CLOSED CAPTIONING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IV.14

CGMS ENCODING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IV.15

TELETEXT ENCODING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IV.15.1

Signals Exchanged . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IV.15.2

Transmission Protocol. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IV.15.3

Programming. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IV.15.4

Teletext Pulse Shape . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IV.16

C BUS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IV.17

DUAL ENCODING APPLICATION WITH 54MBIT/S YCRCB INTERFACE . . . . . . . . . .

IV.18

LINE SKIP / LINE INSERT CAPABILITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IV.19

CVBS, S-VHS AND RGB ANALOG OUTPUTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

V.1

ABSOLUTE MAXIMUM RATINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

V.2

THERMAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

V.3

DC ELECTRICAL CHARACTERISTICS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

V.4

AC ELECTRICAL CHARARCTERISTICS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

REGISTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

VI.1

VI.2

VII

APPLICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

VIII

PACKAGE MECHANICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

STV0118

2/42

VSYNC/ODDEVEN

SDA

SCL

RESET

CKREF

TTXD

TTXS/CSI2C

G/Y

R/C

B/CVBS

VR_RGB

REF(RGB)

DDA

HSYNC

YCRCB7

YCRCB6

YCRCB5

YCRCB4

YCRCB3

YCRCB2

YCRCB1

YCRCB0

CVBS

VR_CVBS

REF(CVBS)

SSA

011

.
E

I - GENERAL DESCRIPTION

The STV0118 is a high performance PAL/NTSC
digital encoder in a low cost pakage. It converts a
4:2:2 digital video stream into a standard analog
baseband PAL/NTSC signal and into RGB analog
components. The STV0118 can handle interlaced
mode (with 525/625 line standards) and non-inter-
laced mode. It can perform Closed-Captions,
CGMS or Teletext encoding.

Four analog output pins are available, on which it
is possible to output either S-VHS(Y/C) + CVBS1
+ CVBS2 or RGB + CVBS. Moreover, it is possible
to use two STV0118 in parallel to interface with
SGS-THOMSON's MPEG decoder ICs that are
able to deliver a 54Mbit/s "double" YCrCb stream
(e.g. the STi3520M). This allows for example to
encode OSD in one of the streams only.

II - PIN INFORMATION

II.1 - Pin Connections

STV0118

3/42

II.2 - Pin Description

Pin

Name

Type

Function

HSYNC

I/O

Line Synchronization Signal :
- Input in ODDEV+HSYNC or VSYNC + HSYNC or VSYNC slave modes
- Output in all other modes (master/slave)
- Synchronous to rising edge of CKREF
- Default polarity : negative pulse

2
3
4
5
6
7
8
9

YCrCb7
YCrCb6
YCrCb5
YCrCb4
YCrCb3
YCrCb2
YCrCb1
YCrCb0

I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O

Input : time multiplexed 4:2:2 luminance and chrominance data as defined in ITU-R
Rec601-2 and Rec656 (except for TTL input levels). This bus interfaces with MPEG video
decoder output port and typically carries a stream of Cb,Y,Cr,Y digital video at CKREF
frequency, clocked on the rising edge (by default) of CKREF. A 54-Mbit/s `double' Cb, Y,
Cr, Y input multiplex is supported for double encoding application (rising and falling edge
of CKREF are operating). Output: for test purpose only.

Supply

Digital Ground

CVBS

Output

Analog Composite Video Output (current-driven).
CVBS must be connected to analog ground over a load resistor (R

LOAD

Following the load resistor, a simple analog low pass filter is recommended CVBS
amplitude is proportional to I

REF(CVBS)

OUT(N)

= N x R

LOAD

x I

REF(CVBS)

/96) with N = [0-

511] V

OUT(Max.)

= 1V

and I

OUT(Max.)

= 5mA

VR_CVBS

I/O

Internal Reference Voltage for the 9-bit DAC CVBS.
VR_CVBS must be connected to analog ground over a capacitor (6.8nF typ.),
VR_CVBS = 1.9V

REF(CVBS)

I/O

Reference current source for the 9-bit DAC CVBS.
- I

REF(CVBS)

must be biased to analog ground over a reference resistor R

REF(CVBS)

- R

REF(CVBS)(Min.)

= 5.95 x R

LOAD

OUT(Max.)

with V

OUT(Max.)

= 1V

and I

OUT(Max.)

= 5mA

REF(CVBS)

= V

REF(CVBS)

), V

REF(CVBS) (Typ.)

= 1.12V.

SSA

Supply

Analog ground for DACs

DDA

Supply

Analog positive power supply for DACs (+3.3V nom.)

REF(RGB)

I/O

Reference current source for Tri-DAC R/Y,G/C,B/CVBS.
-I

REF(RGB)

must be connected to analog ground over a reference resistor R

REF(RGB)

-R

REF(RGB)(Min.)

= 5.95 x R

LOAD

OUT(Max.)

, with V

OUT(Max.)

= 1V

and I

OUT(Max.)

= 5mA

REF(RGB)

= V

REF(RGB)

), V

REF(RGB) (Typ.)

= 1.12V.

VR_RGB

I/O

Internal reference voltage for the 9bit Tri-DAC R/Y,G/C,B/CVBS.
VR_RGB must be biased to analog ground over a typical 6.8nF capacitor, VR_RGB = 1.9V.

B/CVBS

Analog `Blue' or CVBS output (current-driven).
This output must be connected to analog ground over a load resistor (R

LOAD

Following the load resistor, a simple analog low pass filter is recommended.
V

OUT(Max.)

= 1V

and I

OUT(Max.)

= 5mA (V

OUT(N)

= N x R

LOAD

x I

REF(RGB)

/96)

with N = [0-511].

R/C

Analog `Red' or S-VHS Chrominance output (current-driven).
This output must be connected to analog ground over a load resistor (R

LOAD

Following the load resistor, a simple analog low pass filter is recommended.
V

OUT(Max.)

= 1V

and I

OUT(Max.)

= 5mA (V

OUT(N)

= N x R

LOAD

x I

REF(RGB)

/96)

with N = [0-511].

G/Y

Analog `Green' or S-VHS Luminance output (current-driven).
This output must be connected to analog ground over a load resistor (R

LOAD

Following the load resistor, a simple analog low pass filter is recommended.
V

OUT(Max.)

= 1V

and I

OUT(Max.)

= 5mA (V

OUT(N)

= N x R

LOAD

x I

REF(RGB)

/96)

with N = [0-511].

Supply

Digital positive supply voltage (+3.3V nom.)

TTXS/CSI2C

I/O

Output : positive sync pulse for control of Teletext buffer in external demultiplexer or
Transport IC.

TTXD

I/O

Teletext data stream from external demultiplexer or Transport IC synchronous to rising
edge of CKREF signal average rate of 6.9375Mbit/s.
Output in test mode only.

II - PIN INFORMATION (continued)

STV0118

4/42

II - PIN INFORMATION (continued)

Pin

Name

Type

Function

CKREF

Master clock reference signal.
Its rising edge is the default reference for set-up and hold times of all inputs, and for
propagation delay of all outputs (except for SDA output).
CKREF nominal frequency is 27MHz (CCIR601) : input pad with pull down (50k

Typ.)

RESET

Hardware reset, active LOW.
It has priority over software reset. NRESET imposes default states (see Register Contents).
Minimum Low level required duration is 5 CKREF periods : input pad with pull down
(50k

Typ.)

SCL

C bus clock line (internal 5-bit majority logic with CKREF for reference) : input pad with

pull down (50k

Typ.)

SDA

I/O

C bus serial data line.

Input : internal 5-bit majority logic with CKREF for reference
Output : open drain

VSYNC/

ODDEVEN

I/O

Frame sync signal :
- input in slave modes, except when sync is extracted from YCrCb data
- output in master mode and when sync is extracted from YCrCb data
- synchronous to rising edge of CKREF
- ODDEVEN default polarity :

odd (not-top) field : LOW level
even (bottom) field : HIGH level

II.2 - Pin Description (continued)

III - BLOCK DIAGRAM

SSA

DDA

CTRL + CFG

LUMA

PROCESSING

CLOSED

CAPTIONS

CGMS

CHROMA

PROCESSOR

TRAP

9-BIT

TRIDAC

SWITCH

DEMULTIPLEXER

RGB ENCODING

CB-CR

SYNC CONTROL

& VIDEO TIMING

GENERATOR

YCRCB7

RE F(CVBS)

VR_CVBS

CVBS

REF(RGB)

VR_RGB

B/CVBS

SSA

DDA

G/Y

R/C

TTXD

9-BIT

DAC

TELETEXT

YCRCB6

YCRCB5

YCRCB4

YCRCB3

YCRCB2

YCRCB1

YCRCB0

CSI2C

TTXS

STV0118

SDA

SCL

C BUS

CSI2C

VSYNC/ODDEVEN

HSYNC

RESET

CKREF

TTXS/

CSI2C

SSA

DDA

AUTOTEST

COLOR BAR

PATTERN

-
0

.
E

STV0118

5/42

Электронный компонент: STV0118