ADV7190KST - Analog Devices - Datasheet.Directory

Rev B

Ev al-AD V7190/91EB REVA

FEATURESFEATURES

FEATURES

On-Board ReferenceOn-Board Reference

On-Board Reference

On-Board ClockOn-Board Clock

On-Board Clock

8 or16 bit Pixel Data Input8 or16 bit Pixel Data Input

8 or16 bit Pixel Data Input

ADuC812 Microconverter + Switch ControlADuC812 Microconverter + Switch Control

ADuC812 Microconverter + Switch Control

Direct Hook-Up to Printer Port of PCDirect Hook-Up to Printer Port of PC

Direct Hook-Up to Printer Port of PC

PC Software for Control of ADV7190/91 modesPC Software for Control of ADV7190/91 modes

PC Software for Control of ADV7190/91 modes

INTRODUCTIONINTRODUCTION

INTRODUCTION

This Application Note describes the

ADV7190/91EB REVA evaluation board which

supports the ADV7190/91 Digital Video Encoder.

The device accepts CCIR601 data and converts

into analog Composite, Y/C, RGB or YUV video

signals in PAL or NTSC format. Full data on the

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its use,

nor for any infringements of patents or other rights of third parties which may

result from its use. No license is granted by implication or otherwise under any

patent or patent rights of Analog Devices.

One Technology Way, P.O. Box 9105, Norwood. MA 02052-9105, U.S.A.One Technology Way, P.O. Box 9105, Norwood. MA 02052-9105, U.S.A.

One Technology Way, P.O. Box 9105, Norwood. MA 02052-9105, U.S.A.

Tel: 517/329-4700Tel: 517/329-4700

Tel: 517/329-4700

ADV7190/91 is available in the ADV7190/91 data

sheet, available from Analog Devices and should

be consulted in conjunction with this note when

using the Evaluation Board.

GENERAL DESCRIPTION

The ADV7190/91EB REVA provides a 25-pin

input port over which pixel data in CCIR601

format can be input. Test pattern generators

providing these standards are the Tektronix

TSG601 handheld signal generator or the

Tektronix TPG20. The input pixel data is

converted from ECL level

to TTL level via the MC10125TTLs.

If a different clock source as that provided by the

pixel data is required, the ADV7190/91EB REVA

features a 27Mhz Oscillator (Y1) which can be

connected over jumper J2.

The ADV7190/91 contains an internal PLL which

synchronizes 27MHz operation with 54 MHz

operation.

Two on-board push-buttons provide control over

the SCRESET/RTC/TR pin and the RESET pin.

According to the setttings in Mode Register 4,

whenever PB2 is pressed, a timing reset or a

SCreset is applied.

When RESET (PB1) is pressed the internal

registers of the ADV7190/91 reset to default

The ADV7190/91EB REVA also features an

external Voltage Reference (U16) which provides

1.235V Output Voltage.

The DAC outputs are fed to a low-pass filter

followed by an AD847 buffer op-amp (U1-U6)

before being output over the BNC connection.

The DAC outputs can be accessed at different

points in the output filter circuit using the 0R

resitors.

The ADV7190/91EB REVA is fitted with the

ADuC812 Microconverter. With the supplied

software, there is an additional 8051 .asm Code.

This code contains different demo settings for the

ADV7190/91. According to the switch setting of

SW1 the individual demos can be displayed.

The ADuC812 is optional and is not required to

make full use of the ADV7190/91EB REVA.

REQUIREMENTS

The ADV7190/91 requires a DC power supply

which is able to deliver a minimum of 3.3V.

Ideal operating voltage for the ADV7190/91EB

REVA is 5V. Current requirements are approx.

0.5 A.

To run the software which is supplied with the

ADV7190/91 it is necessary to connect the printer

port LPT1 of the PC to the boards 36pin

Centronics connector.

In order to run the software on a PC the operating

system needs to be Windows 95 or Windows 98.

The system requirements ask for any Pentium I,

PMMx or Pentium II PC.

Evaluation Board for the ADV7190/91

Digital Video Encoder

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Ev al-AD V7190/91EB REVA

ON RESET

After pressing the reset button PB1 on the evalua-

tion board, the register settings of the ADV7190/

91 will set up as follows:

NTSC Video Standard.

2xOversampling Mode

DAC A, B, C off

DAC D, E, F on

Disabled:

MR2: Sleep Mode Control, Pixel Data Valid,

Standard I2C, Square Pixel, SCART

MR3: Closed Captioning, TTX Bit Request,

Teletext, VBI

MR4: Color Bars, VSYNC_3H

MR5: CLAMP, RGB Sync, Y-Level Control

MR7: Sharpness Filter, Brightness Control, Hue

Adjust, Luma Saturation, Color Control

MR8: Gamma Control, DNR, Double Buffering,

MR9: Undershoot Limiter

OCR:CLKOUT Pin

Enabled:

MR2: Pedestal,

MR4: Burst, Chrominance

MR6: PLL, Power-Up Sleep Mode

Output Configuration:

DAC A: G

DAC B: B

DAC C: R

DAC D: CVBS

DAC E: LUMA

DAC F: CHROMA

Timing Mode 0, Slave, Blank Disabled

Interlaced Mode, 720 active pixel line duration,

normal operating mode (no genlock), UV default

levels, VSO output, HSO Out, 8-bit Pixel Port,

no Chroma Delay

Subcarrier Frequency Register 0: CB

Subcarrier Frequency Register 1: 8A

Subcarrier Frequency Register 2: 09

Subcarrier Frequency Register 3: 2A

The following register settings will correspond to

the above settings:

MR0 00hex

MR1 07hex

MR2 08hex

MR3 00hex

MR4 00hex

MR5 00hex

MR6 00hex

MR7 00hex

MR8 00hex

MR9 00hex

OCR 72hex

TR0 08hex

TR1 00hex

SFR0 CBhex

SFR1 8Ahex

SFR2 09hex

SFR3 2Ahex

SPR 00hex

all other registers : 00hex

After powering up the ADV7190/91EB REVA a

hardware reset should be applied (PB1).

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Ev al-AD V7190/91EB REVA

Setting Up:Setting Up:

Setting Up:

Insert DISK 1 into the floppy drive and double

click on SETUP.EXE and you will be

prompted for all other necessary information.

Running the Software:Running the Software:

Running the Software:

Double clicking the ADV7190/91 icon will run

the software for the evaluation board.

Initialisation:Initialisation:

Initialisation:

After starting the software you will be

asked to load a preset.

If you are not familiar with the software

it is recommended to o.k. this message.

You will have the ADV7190/91 immediately

configured in such a way that it will output

a color bar signal when the DAC A BNC

output is connected to a NTSC monitor.

For this configuration it is not necessary

to provide an input signal because the internal

color bars are enabled. The register settings

for this preset can be checked in clicking

on the READ ALL REGISTERS in the

main window.

Otherwise it is recommended to consult the

datasheet for information about each control.

EVALUATION SOFTWARE

In order to give the user complete control over

the ADV7190/91, a computer program is sup-

plied with the board.

IMPORTANT THINGS TO KNOW:IMPORTANT THINGS TO KNOW:

IMPORTANT THINGS TO KNOW:

Validity of Settings:

The evaluation software can automatically check

for an acknowledge or, when any register is

changed can automatically read-back the new

value stored in that register. The ACKcheck

function is in the Options menu. The Continu-

ous Read function may be enabled in the

Register Access menu.

I2C Compatible Programming:

This version of software does not take into

account the ability of the ADV7190/91 to accept

continuous streams of data. Instead, for every

start sequence (see the ADV7190/91 Data sheet

for information on different ways registers can be

written to). This means that more information has

to be written to the MPU port extending the time

required to program the ADV7190/91.This, while

being a valid way of writing to the ADV7190/91

is not the optimum method of writing to the

ADV7190/91.

Dynamically Linked Menu System:Dynamically Linked Menu System:

Dynamically Linked Menu System:

All menues in this software are interactive, so

when (for example) you change the value of a

change will automatically change to the correct

state, the inverse is also correct.

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LINK HEADERS

ADV7190/91 LINKS

These links are used for operating the ADV7190/

91 encoder:

J1: Link AGND and DGND.

J2: Clock Mode

J2A: ADV7190/91 is clocked from the

on-board 27Mhz clock.

J2B : ADV7190/91 is clocked from the

clock contained in the pixel

input.

J3: Link clock line to header P8.

For example, to use different clock

source from those mentioned above.

J4: Link DGND and GND.

J5: Link ALSB pin to Ground. This

jumper should be inserted when ALSB

is chosen to be set low.

J6: Timing Reset or SCReset / PB2

J6A: The SCRESET/RTC pin and

PB2 are configured as a

Timing Reset.

J6B: The SCRESET/RTC pin is

configured as a Subcarrier

Phase Reset input pin or as a

RTC input pin, according to

the settings in Mode Register

4. When Mode Register 4 is

configured in Subcarrier

Reset mode, PB2 will initiate

a Subcarrier Phase reset

and the Subcarrier Phase will

reset to Field 0 at the start of

the next Field.

J7: Link PAL_NTSC pin to Ground.

Inserting this jumper will configure

the ADV7190/91 to run in NTSC

mode regardless of the settings in Mode

Mode Register 2 can however

override this pin (Standard I2C

Control).

J8: Link BLANK pin to Ground. This

allows control over the BLANK pin

functionality over the software. If

unconnected the BLANK pin is

disabled permanently and

the software can not control the

BLANK pin functionality.

J20: If the external Vref (U2) is required

this jumper should be inserted.

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Ev al-AD V7190/91EB REVA

MICROCONVERTER ADuC812 LINKS

These links are required in conjunction with the

ADuC812 Microconverter:

J9: Link Vertical Sync signals to Interrrupt.

J9A: the vertical sync signal VSO initiates

an interrrupt.

J9B: the vertical sync signal VSYNC

initiates an interrupt.

J10: Link Horizontal Sync signal to Interrrupt.

J10A: the horizontal sync signal HSO

initiates an interrrupt.

J10B: the horizontal sync signal HSYNC

initiates an interrupt.

J11: Link TTX signal to Interrrupt.

J12: Link TTXRQ signal to Interrupt.

J13: If the Microconverter is to be used with the

ADV7190/91 this link sets the SDA of the I2C

interface. This link must be set whenever the

Microconverter is to be used with the

ADV7190/91.

J14: If the Microconverter is to be used with the

ADV7190/91 this link sets the SCL of the I2C

interface. This link must be set whenever the

Microconverter is to be used with the

ADV7190/91.

J15: When this link is set, serial download on

power-up or external Reset is enabled.

After downloading the program this jumper

must never be inserted, otherwise the ADuC

program will be lost forever.

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* Macrovision is only available on the ADV7190

In order to make use of this facility the following

instructions should be followed:

1. The ADV7190/91EB REVA has to be connected

over the 25pin pixel port to a signal generator

supplying valid CCIR601 data.

Jumper J2 has to be set to J2B.

2. The disks supplied with the ADV7190/91EB

REVA contain a file called 90dem.asm.

Double click on ASM51.exe and name the path

and filename of the .asm file. A message should

come up which reads:

ASSEMBLY COMPLETE, 0 ERRORS

FOUND

3. Connect the 5pin connector to P9

(N.C. on pin 5). Insert jumper J15.

Power-up the board.

This special cable can be provided or requested

from Analog Devices.

4. Double click on DEBUG812.exe. Under

SESSION, click on DEMO.SES. In the

CONFIGURATION window, click on FILES

and load the compiled .lst and .hex files for

90dem.asm, that is 90dem.lst and 90dem.hex.

5. Press the RESET button on the board. Click on

RESET in the CONFIGURATION window. The

data will be uploaded and the

status bar should read: DATA UPLOADED

SUCCESSFULLY.

6. Click on the PROG icon in the ADuC812

Debugger. The status bar should read: DATA

UPLOADED SUCCESSFULLY.

7. Click on the RUN icon (next to PROG).

8. Load the ADV7190/91 Evaluation Software.

Cancel the message which shows up in the main

window.

Remove jumper J15 and press RESET on the

evaluation board.

The switch settings will operate as indicated

above. Note, when setting individual switches

all other switches have to be set to ON.

In this application the ADuC812 is used to load some presets, which are controlled over the Mode Control

switch SW1:

ADuC812 MICROCONVERTER

To make moste efficent use of the ADuC812s

capacities, it is recommended to consult the

datasheet for the ADuC812 and the Get Started

ADV7190/91 :SWIT C H E S

FUNCTIONALITIES

SW 8 SW 7 SW 6 SW 1 SW 2 SW 3 SW 4 SW 5

ON => NTSC

FF =

PAL

ON => YCbCr

FF =

MACROVISION

ON/O

FF*

Macrov ision TYPE

( SW 4 represents

the L S B )*

ON => PIX DATA

OFF => COLOR BARS

Sw itches

used

ON=> 2x Oversampling

OFF=>4x Oversampling

Guide for the QuickStartTM Development

System V1.1 which is the software to interface

the PC and the Microconverter. All can be

obtained from Analog Devices.

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Ev al-AD V7190/91EB REVA

-5V Ground +5V

BNC

S-VIDEO

BNC

RGB

Connectors

P0-P15

16-BIT

INPUT

INTERFACE

DB15 female

PIX EL INP UT

CONNECTOR

CENTRONICS36

female

PRINTER

PORT

POW ER S UPPLY

VIDEO DATA

GENERATOR

PC P RINTE R

PORT

ADV7190/91EB REVA CONNECTIONS