Rainbow-electronics MAX9595 Bedienungsanleitung PDF herunterladen

General Description

The MAX9595 dual SCART switch matrix routes audio

and video signals between an MPEG encoder and two

external SCART connectors under I

†

control, and

meets the requirements of EN50049-1, IEC 933-1,

Canal+, and BSkyB standards.

The video and audio channels feature input source

selection multiplexers, input buffers, and output buffers

for routing all inputs to selected outputs.

The MAX9595 provides programmable gain control from

+5dB to +7dB in 1dB steps for red, green, and blue com-

ponent video signals. All other video outputs have a fixed

+6dB gain. Additional features include an internal luma

and chroma (Y/C) mixer that generates a composite

video signal (CVBS) to supply an RF modulator output,

and internal video reconstruction lowpass filters with a

cutoff frequency of 6MHz. The MAX9595 TV audio chan-

nel features clickless switching and programmable vol-

ume control from -56dB to +6dB in 2dB steps. The VCR

audio output also has programmable gain for -6dB, 0dB,

or +6dB. The device also generates monaural audio from

left and right stereo inputs. All audio drivers deliver a

3.0V

RMS

minimum output.

The MAX9595 operates with standard 5V and 12V

power supplies and supports slow-switching and fast-

switching signals. The I

C interface programs the

gain and volume control, and selects the input source

for routing.

The MAX9595 is available in a compact 48-pin thin

QFN package and is specified over the 0°C to +70°C

commercial temperature range.

Applications

Satellite Set-Top Boxes

Cable Set-Top Boxes

TVs

VCRs

DVDs

Features

♦ Video Outputs Drive 2V

P-P

into 150Ω

♦ Audio Outputs Drive 3V

RMS

into 10kΩ

♦ Clickless, Popless Audio Gain Control and

Switching

♦ Interrupt Output Detects Changes on Slow

Switching Input

♦ AC-Coupled Video Inputs with Internal Clamp and

Bias

♦ DC-Coupled Video Outputs

♦ Composite Video Signal Created Internally from

Y/C Inputs

♦ Internal Video Reconstruction Filters Provide

-50dB at 27MHz

♦ Single-Ended Audio Input

♦ Red/Chroma Switch for Bidirectional I/O

♦ I

C-Programmable RGB Gain from +5dB to +7dB

♦ I

C-Programmable Audio Gain Control from +6dB

to -56dB

♦ Meets EN50049-1, IEC 933-1, Canal+, and BSkyB

Requirements

MAX9595

Audio/Video Switch for Dual SCART Connector

________________________________________________________________ Maxim Integrated Products 1

Ordering Information

19-3946; Rev 0; 1/06

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Pin Configuration and Typical Application Circuit appear at

end of data sheet.

System Block Diagram appears at end of data sheet.

EVALUATION KIT

AVAILABLE

†

Purchase of I

C components from Maxim Integrated Products,

Inc. or one of its sublicensed Associated Companies, conveys

a license under the Philips I

C Patent Rights to use these com-

ponents in an I

C system, provided that the system conforms to

the I

C Standard Specification as defined by Philips.

PART

TEMP RANGE

PIN-

PACKAGE

PKG

CODE

MAX9595CTM+

0°C to +70°C

48 Thin QFN-EP*

(7mm x 7mm)

T4877-6

*EP = Exposed paddle.

+Denotes lead-free package.

1 2 3 4 5 6 ... 27 28

Inhaltsverzeichnis

Seite 1 - Ordering Information

General DescriptionThe MAX9595 dual SCART switch matrix routes audioand video signals between an MPEG encoder and twoexternal SCART connectors under I

Seite 2 - ELECTRICAL CHARACTERISTICS

MAX9595Audio/Video Switch for Dual SCART Connector10 ______________________________________________________________________________________Pin Descrip

Seite 3

MAX9595Audio/Video Switch for Dual SCART Connector______________________________________________________________________________________ 11Fast switch

Seite 4

MAX9595Video InputsAll video inputs are AC-coupled with an external 0.1µFcapacitor. Either a clamp or bias circuit sets the DCinput level of the video

Seite 5

Video OutputsThe DC level at the video outputs is controlled so thatcoupling capacitors are not required, and all of thevideo outputs are capable of d

Seite 6 - GROUP DELAY vs. FREQUENCY

MAX9595Audio OutputsBoth right and left channels have a stereo output for theTV and VCR SCART. The monaural output, which is amix of the TV right and

Seite 7

To implement the zero-crossing function when switch-ing audio signals, set the ZCD bit by loading register00h through the I2C-compatible interface (if

Seite 8

MAX95952-Wire Interface Data FormatI2C CompatibilityThe MAX9595 is compatible with existing I2C systems.SCL and SDA are high-impedance inputs. SDA has

Seite 9 - Pin Description

Power Supplies and BypassingThe MAX9595 features single 5V and 12V supply opera-tion and requires no negative supply. The +12V supplyV12is for the SCA

Seite 10 - Detailed Description

MAX9595Audio/Video Switch for Dual SCART Connector18 ______________________________________________________________________________________BITDESCRIPT

Seite 11 - SCART Video Switching

MAX9595Audio/Video Switch for Dual SCART Connector______________________________________________________________________________________ 19BITDESCRIPT

Seite 12 - Video Inputs

MAX9595Audio/Video Switch for Dual SCART Connector2 _______________________________________________________________________________________ABSOLUTE MA

Seite 13 - Table 1. Slow-Switching Modes

MAX9595Audio/Video Switch for Dual SCART Connector20 ______________________________________________________________________________________BITDESCRIPT

Seite 14

MAX9595Audio/Video Switch for Dual SCART Connector______________________________________________________________________________________ 21BITDESCRIPT

Seite 15 - Digital Section

MAX9595Audio/Video Switch for Dual SCART Connector22 ______________________________________________________________________________________BITDESCRIPT

Seite 16 - Applications Information

MAX9595Audio/Video Switch for Dual SCART Connector______________________________________________________________________________________ 23BITDESCRIPT

Seite 17 - Layout and Grounding

MAX9595Audio/Video Switch for Dual SCART Connector24 ______________________________________________________________________________________Typical App

Seite 18

MAX9595Audio/Video Switch for Dual SCART Connector______________________________________________________________________________________ 25System Bloc

Seite 19

MAX9595Audio/Video Switch for Dual SCART Connector26 ______________________________________________________________________________________Pin Configu

Seite 20

MAX9595Audio/Video Switch for Dual SCART Connector______________________________________________________________________________________ 2732, 44, 48L

Seite 21

MAX9595Audio/Video Switch for Dual SCART ConnectorMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied i

Seite 22

MAX9595Audio/Video Switch for Dual SCART Connector_______________________________________________________________________________________ 3ELECTRICAL

Seite 23 - Table 12. Register 0Eh Status

MAX9595Audio/Video Switch for Dual SCART Connector4 _______________________________________________________________________________________ELECTRICAL

Seite 24 - Typical Application Circuit

MAX9595Audio/Video Switch for Dual SCART Connector_______________________________________________________________________________________ 5ELECTRICAL

Seite 25 - System Block Diagram

R/G/B VIDEO LARGE-SIGNAL BANDWIDTHvs. FREQUENCYMAX9595 toc01FREQUENCY (MHz)GAIN (dB)1-5-4-3-2-101234-60.1 10VIN = 1VP-PRL = 150Ω TO GNDVIDGROUP DELAY

Seite 26 - Chip Information

MAX9595Audio/Video Switch for Dual SCART Connector_______________________________________________________________________________________ 7AUDIO CROSS

Seite 27 - Package Information

MAX9595Audio/Video Switch for Dual SCART Connector8 _______________________________________________________________________________________Typical Ope

Seite 28 - PACKAGE OUTLINE

MAX9595Audio/Video Switch for Dual SCART Connector_______________________________________________________________________________________ 9Pin Descrip

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Inhaltsverzeichnis

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