Rainbow Electronics MAX9595 User Manual

General Description

The MAX9595 dual SCART switch matrix routes audio
and video signals between an MPEG encoder and two
external SCART connectors under I2C†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 com­ponent 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 chan­nel features clickless switching and programmable vol­ume 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 fast­switching signals. The I2C 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

2

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

♦ I

2

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

2

C components from Maxim Integrated Products,
Inc. or one of its sublicensed Associated Companies, conveys
a license under the Philips I

2

C Patent Rights to use these com-

ponents in an I

2

C system, provided that the system conforms to

the I

2

C Standard Specification as defined by Philips.

PART

TEMP RANGE

PIN­PACKAGE

PKG

CODE

MAX9595CTM+

(7mm x 7mm)

T4877-6

*EP = Exposed paddle.
+Denotes lead-free package.

0°C to +70°C

48 Thin QFN-EP*

MAX9595

Audio/Video Switch for Dual SCART Connector

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(V12= 12V, V

VID

= V

AUD

= 5V; 0.1µF X5R capacitor in parallel with a 10µF aluminum electrolytic capacitor from V

AUD

to GNDAUD,

V

12

to GNDAUD, and V

VID

to GNDVID; SET = 100kΩ nominal, R

LOAD

= 150Ω, TA= 0°C to +70°C, unless otherwise noted. Typical

values are at T

A

= +25°C.) (Note 1)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.

V

VID

to GNDVID........................................................-0.3V to +6V

V

12

to GNDAUD .....................................................-0.3V to +14V

V

AUD

to GNDAUD ....................................................-0.3V to +6V

GNDAUD to GNDVID ............................................-0.1V to +0.1V

All Video Inputs, ENCIN_FS, VCRIN_FS,

SET to GNDVID......................................-0.3V to (V

VID

+ 0.3V)

All Audio Inputs,

AUDBIAS to GNDAUD .........................-0.3V to (V

AUD

+ 0.3V)
SDA, SCL, DEV_ADDR,

INTERRUPT_OUT to GNDVID ..............................-0.3V to +6V

All Audio Outputs, TV_SS,

VCR_SS to GNDAUD...............................-0.3V to (V

12

+ 0.3V)

INTERRUPT_OUT Current ................................................+50mA

All Video Outputs, TVOUT_FS to V

VID

, V

AUD

,

GNDAUD, GNDVID ................................................Continuous

All Audio Outputs to V

VID

, V

AUD

, V12,

GNDVID, GNDAUD ................................................Continuous

Continuous Power Dissipation (T

A

= +70°C)

48-Pin Thin QFN (derate 27mW/°C above +70°C) .....2105.3mW

Operating Temperature Range...............................0°C to +70°C

Junction Temperature......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

PARAMETER

CONDITIONS

UNITS

V

VID

Supply Voltage Range V

VID

Inferred from video gain test

5.0

V

AUD

Supply Voltage Range V

AUD

Inferred from audio gain test

5.0

V12 Supply Voltage Range V

12

Inferred from slow switching levels

V

V

VID

Quiescent Supply Current I

VID_Q

All video output amplifiers are enabled,
no load

69 100 mA

V

VID

Standby Supply Current I

VID_Q

All video output amplifiers are in shutdown,
and TV_FS_OUT driver is in shutdown, no
load

40 60 mA

V

AUD

Quiescent Supply Current

No load 2.4 6 mA

V12 Quiescent Supply Current I

12_Q

No load 3.6 6 mA

VIDEO CHARACTERISTICS

CVBS and Y-C, 1V

P-P

input

Voltage Gain G_V

RGB, 1V

P-P

input, (programmable gain

control)

dB

LP Filter Attenuation ATTN TA = +25°C, f = 6MHz, VIN = 1V

P-P

1.2 3.3 dB

LP Filter Suppression SPPR TA = +25°C, f = 27MHz, VIN = 1V

P-P

35 50 dB

Slew Rate SR V

OUT

= 2V

P-P

8 V/µs

Settling Time t

S

V

OUT

= 2V

P-P

, settle to 0.1% (Note 2)

ns

Gain Matching AG 1V

P-P

input, between RGB or Y-C

dB

Differential Gain DG 5-step modulated staircase 0.4 %

Differential Phase DP 5-step modulated staircase 0.2

degrees

SYMBOL

MIN TYP MAX

4.75

4.75

5.25

5.25

11.4 12.0 12.6

I

AUD_Q

+5.5 +6.0 +6.5

+4.5 +5.0 +5.5

+5.5 +6.0 +6.5

+6.5 +7.0 +7.5

380

-0.5 +0.5

MAX9595

Audio/Video Switch for Dual SCART Connector

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(V12= 12V, V

VID

= V

AUD

= 5V; 0.1µF X5R capacitor in parallel with a 10µF aluminum electrolytic capacitor from V

AUD

to GNDAUD,

V

12

to GNDAUD, and V

VID

to GNDVID; SET = 100kΩ nominal, R

LOAD

= 150Ω, TA= 0°C to +70°C, unless otherwise noted. Typical

values are at T

A

= +25°C.) (Note 1)

PARAMETER

CONDITIONS

UNITS

Signal-to-RMS Noise

V

IN

= 1V

P-P

65 dB

Group Delay Variation ΔGD f = 0.1MHz to 4.43MHz 14 ns

Sync-Tip Clamp Level

RGB, composite, and luma input, no signal,
no load

V

Chroma Bias

Chroma input only, no signal, no load 1.9 V

Droop D Set by input current -2 +2 %

Power-Supply Rejection Ratio

DC, 0.5V

P-P

48 dB

CVBS or RGB video inputs, VIN > V_CLMP 4 MΩ

Input Impedance Z

IN

Chroma video input. VIN = V_BIAS 11 kΩ

Input Clamp Current I

CLMPVIN

= 1.75V 2.5 5 8.0 µA

Pulldown Resistance RP

Enable VCR_R/C_OUT and TV_R/C_OUT
pulldown through I

2

C, (see registers 7 and 9

for loading register details)

10 Ω

RGB, composite, and luma, no signal,
no load

Output Pin Bias Voltage V

OUT

Chroma, no signal, no load

V

Crosstalk XTLK

Between any two active inputs, f = 4.43MHz,
V

IN

= 1V

P-P

-50 dB

Mute Suppression

-50 dB

AUDIO CHARACTERISTICS (Note 3)

TV or VCR to stereo, gain = 0dB,
V

IN

= 1V

P-P

0

2.5 3.0 3.5

ENC to stereo, gain = 0dB, VIN = 1V

P-P

Voltage Gain (Measured From
Application Input)

G_A

ENC to mono, gain = 0dB, V

IN

= 1V

P-P

dB

Gain Matching Between
Channels

ΔG_A Gain = 0dB, V

IN

= 1V

P-P

0

dB

Flatness ΔA

f = 20Hz to 20kHz, 0.5V

RMS

input,

gain = 0dB

dB

Frequency Bandwidth BW

0.5V

RMS

input, frequency where output is

-3dB referenced to 1kHz

kHz

Input DC Level (Excluding
Encoder Inputs which are Hi-Z)

V

IN

Gain = 0dB

V

SYMBOL

MIN TYP MAX

SNR_V

V_CLMP

1.21

V_BIAS

PSRR_V

1.08

2.27

M_SPR_V f = 4.43MHz, VIN = 1V

, on one input only

P-P

TV or VCR to mono, gain = 0dB, VIN = 1V

-0.5

P-P

3.02 3.52 4.02

6.02 6.52 7.02

-0.5

0.01

230

0.2308
x V

12

+0.5

+0.5

MAX9595

Audio/Video Switch for Dual SCART Connector

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(V12= 12V, V

VID

= V

AUD

= 5V; 0.1µF X5R capacitor in parallel with a 10µF aluminum electrolytic capacitor from V

AUD

to GNDAUD,

V

12

to GNDAUD, and V

VID

to GNDVID; SET = 100kΩ nominal, R

LOAD

= 150Ω, TA= 0°C to +70°C, unless otherwise noted. Typical

values are at T

A

= +25°C.) (Note 1)

PARAMETER

CONDITIONS

UNIT

Single-ended inputs, f = 1kHz, THD < 1% 3

Input Signal Amplitude
(Measured from Application
Input)

ENC inputs single-ended, f = 1kHz,
THD < 1%

V

RMS

Single ended: VCR_INR, VCR_INL, TV_INR,
TV_INL

0.1

Input Resistance (Measured at
Parts Input)

R

IN

Encoder, ENC_INL, ENC_INR 0.1

MΩ

Output DC Level

VIN = 0V

0.5 x
V

12

V

Signal-to-Noise Ratio (Measured
from Application Input)

f = 1.0kHz, 1V

RMS

application input,

gain = 0dB, 20Hz to 20kHz

95 dB

R

LOAD

= 10kΩ, f = 1.0kHz, 0.5V

RMS

output

Total Harmonic Distortion Plus
Noise

R

LOAD

= 10kΩ, f = 1.0kHz, 2V

RMS

output

%

Output Impedance ZO f = 1kHz 1 Ω

1.414V

P-P

input, programmable gain to TV

SCART volume control range extends from

-56dB to +6dB

1.5 2 2.5

Volume Attenuation Step

1.414V

P-P

input, programmable gain to VCR

audio extends from -6dB to +6dB

5.5 6 6.5

dB

From V

12,

f = 1kHz, 0.5V

P-P

,

(C

AUD_BIAS

= 47µF), gain = 0dB

75

Power-Supply Rejection Ratio

From V

AUD

, f = 1kHz, 0.5V

P-P, VAUD

≥

+4.75V, V

AUD

≤ +5.25V, gain = 0dB

75

dB

Mute Suppression

f = 1kHz, 0.5V

RMS

input, set through I2C, see

register 1 for loading register details

90 dB

Audio Clipping Level VCLIP

f = 1kHz, 2.5V

RMS

input, gain = 6dB,

THD < 1%

3.6

V

RMS

Left-to-Right Crosstalk

f = 1kHz, 0.5V

RMS

input, gain = 0dB 80 dB

Crosstalk

TV SCART to VCR SCART or VCR SCART to
TV SCART, f = 1kHz, 0.5V

RMS

input, gain =

0dB

90 dB

SYMBOL

V

IN_AC

MIN TYP MAX

1.31

V

OUT_DC

SNR_A

0.004

0.004

THD+N

ASTEP

PSRR_A

M_SPR_A

XTLK_LR

XTLK_CC

MAX9595

Audio/Video Switch for Dual SCART Connector

_______________________________________________________________________________________ 5

ELECTRICAL CHARACTERISTICS (continued)

(V12= 12V, V

VID

= V

AUD

= 5V; 0.1µF X5R capacitor in parallel with a 10µF aluminum electrolytic capacitor from V

AUD

to GNDAUD,

V

12

to GNDAUD, and V

VID

to GNDVID; SET = 100kΩ nominal, R

LOAD

= 150Ω, TA= 0°C to +70°C, unless otherwise noted. Typical

values are at T

A

= +25°C.) (Note 1)

PARAMETER

CONDITIONS

UNIT

DIGITAL INTERFACE: SDA and SCL (Note 4)

Low-Level Input Voltage V

IL

0 0.8 V

High-Level Input Voltage V

IH

2.6 V

Hysteresis of Schmitt Trigger
Input

0.2 V

I

SINK

= 3mA 0.4

SDA Low-Level Output Voltage V

OL

I

SINK

= 6mA 0.6

V

Output Fall Time for SDA Line 400pF bus load

ns

Spike Suppression 50 ns

Input Current -10

µA

Input Capacitance 5pF

SCL Clock Frequency 0

kHz

Hold Time

0.6 µs

Low Period of SCL Clock t

Low

1.3 µs

High Period of SCL Clock t

HIGH

0.6 µs

Setup Time for a Repeated Start
Condition

0.6 µs

Data Hold Time

0 0.9 µs

Data Setup Time

ns

Setup Time for Stop Condition

0.6 µs

Bus Free Time Between a Stop
and Start

t

BUF

1.3 µs

OTHER DIGITAL PINS (Note 4)

DEV_ADDR Low Level 0.8 V

DEV_ADDR High Level 2.6 V

INTERRUPT_OUT Low Voltage INTERRUPT_OUT sinking 1mA

0.4 V

INTERRUPT_OUT High Leakage
Current

V

INTERRUPT_OUT

= 5V 1 10 µA

SLOW SWITCHING SECTION (Note 4)

Input Low Level 02V

Input Medium Level 4.5 7.0 V

Input High Level 9.5 V

12

V

Input Current 50

µA

SYMBOL

t

HD,STA

t

SU,STA

t

HD,DAT

t

SU,DAT

t

SU,STO

MIN TYP MAX

100

0.15

250

+10

400

100

R/G/B VIDEO LARGE-SIGNAL BANDWIDTH

vs. FREQUENCY

MAX9595 toc01

FREQUENCY (MHz)

GAIN (dB)

1

-5

-4

-3

-2

-1

0

1

2

3

4

-6

0.1 10

VIN = 1V

P-P

RL = 150Ω TO GNDVID

GROUP DELAY vs. FREQUENCY

MAX9595 toc02

FREQUENCY (MHz)

GROUP DELAY (ns)

1

20

40

60

80

100

120

0

0.1 10

Y VIDEO LARGE-SIGNAL BANDWIDTH

vs. FREQUENCY

MAX9595 toc03

FREQUENCY (MHz)

GAIN (dB)

1

-5

-4

-3

-2

-1

0

1

2

3

4

-6

0.1 10

VIN = 1V

P-P

RL = 150Ω TO GNDVID

Typical Operating Characteristics

(V12= 12V, V

VID

= V

AUD

= 5V, 0.1µF X5R capacitor in parallel with a 10µF aluminum electrolytic capacitor from V

AUD

to GNDAUD,

V12to GNDAUD, V

VID

to GNDVID no load, TA= 0°C to +70°C, unless otherwise noted. Typical values are at TA = +25°C.)

MAX9595

Audio/Video Switch for Dual SCART Connector

6 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(V12= 12V, V

VID

= V

AUD

= 5V; 0.1µF X5R capacitor in parallel with a 10µF aluminum electrolytic capacitor from V

AUD

to GNDAUD,

V

12

to GNDAUD, and V

VID

to GNDVID; SET = 100kΩ nominal, R

LOAD

= 150Ω, TA= 0°C to +70°C, unless otherwise noted. Typical

values are at T

A

= +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNIT

Output Low Level

10kΩ to ground, internal TV,

11.4 < V

12

< 12.6

0 1.5 V

Output Medium Level

10kΩ to ground, external 16/9,

11.4 < V

12

< 12.6

5 6.5 V

Output High Level

10kΩ to ground, external 4/3,

11.4 < V

12

< 12.6

10 V

12

V

FAST SWITCHING SECTION (Note 4)

Input Low Level 0 0.4 V

Input High Level 13V

Input Current 110µA

Output Low Level I

SINK

= 0.5mA 0

0.2 V

Output High Level I

SOURCE

= 20mA, V

VID

- V

OH

2V

Fast Switching Output to RGB
Skew

(Note 5) 30 ns

150Ω to ground 30 ns

Fast Switching Output Fall Time 150Ω to ground 30 ns

Note 1: All devices are 100% tested at TA= +25°C. All temperature limits are guaranteed by design.
Note 2: The settling time is measured from the 50% of the input swing to the 0.1% of the final value of the output.
Note 3: Maximum load capacitance is 200pF. All the listed parameters are measured at application’s inputs, unless otherwise

noted. See the Typical Application Circuits.

Note 4: Guaranteed by design.
Note 5: Difference in propagation delays of fast-blanking signal and RGB signals. Measured from 50% input transition to 50%

output transition. Signal levels to be determined.

0.01

0.75

Fast Switching Output Rise Time

MAX9595

Audio/Video Switch for Dual SCART Connector

_______________________________________________________________________________________ 7

AUDIO CROSSTALK

vs. FREQUENCY

MAX9595 toc08

FREQUENCY (kHz)

CROSSTALK (dB)

100.1

-100

-80

-60

-40

-20

0

-120

0.01 100

VIN = 0.5V

RMS

RL = 10kΩ TO GNDAUD

1

AUDIO LARGE-SIGNAL BANDWIDTH

vs. FREQUENCY

MAX9595 toc07

FREQUENCY (kHz)

GAIN (dB)

10010

4

11000

3

2

1

0

-1

-2

-3

-4

-5

-6

VIN = 0.5V

RMS

RL = 10kΩ TO GNDAUD

AUDIO TOTAL HARMONIC DISTORTION

PLUS NOISE vs. FREQUENCY

MAX9595 toc09

FREQUENCY (kHz)

THD+N (%)

101

0.001

0.01

0.1

0

0.0001

0.01 100

AMPLITUDE = 3.0V

RMS

AMPLITUDE = 0.5V

RMS

AMPLITUDE = 2.0V

RMS

0.1

R/G/B VIDEO SMALL-SIGNAL BANDWIDTH

vs. FREQUENCY

MAX9595 toc04

FREQUENCY (MHz)

GAIN (dB)

1

-5

-4

-3

-2

-1

0

1

2

3

4

-6

0.1 10

VIN = 100mV

P-P

RL = 150Ω TO GNDVID

Y VIDEO SMALL-SIGNAL BANDWIDTH

vs. FREQUENCY

MAX9595 toc05

FREQUENCY (MHz)

GAIN (dB)

1

-5

-4

-3

-2

-1

0

1

2

3

4

-6

0.1 10

VIN = 100mV

P-P

RL = 150Ω TO GNDVID

VIDEO CROSSTALK vs. FREQUENCY

MAX9595 toc06

FREQUENCY (MHz)

CROSSTALK (dB)

1

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

-100

0.1 10

VIN = 100mV

P-P

RL = 150Ω TO GNDVID

POWER-SUPPLY REJECTION RATIO

vs. FREQUENCY

MAX9595 toc10

FREQUENCY (kHz)

PSRR (dB)

1010.10.01 100

-90

-80

-70

-60

-50

-40

-30

-20

-10

-100

0

WITH RESPECT TO V

12

WITH RESPECT TO V

AUD

V

VID

QUIESCENT SUPPLY CURRENT

vs. TEMPERATURE

MAX9595 toc11

TEMPERATURE (°C)

V

VID

QUIESCENT SUPPLY CURRENT (mA)

5025

55

60

65

70

75

80

50

075

ALL VIDEO OUTPUT AMPLIFIERS ENABLED
NO LOAD

Typical Operating Characteristics (continued)

(V12= 12V, V

VID

= V

AUD

= 5V, 0.1µF X5R capacitor in parallel with a 10µF aluminum electrolytic capacitor from V

AUD

to GNDAUD,

V12to GNDAUD, V

VID

to GNDVID no load, TA= 0°C to +70°C, unless otherwise noted. Typical values are at TA = +25°C.)

MAX9595

Audio/Video Switch for Dual SCART Connector

8 _______________________________________________________________________________________

Typical Operating Characteristics (continued)

(V12= 12V, V

VID

= V

AUD

= 5V, 0.1µF X5R capacitor in parallel with a 10µF aluminum electrolytic capacitor from V

AUD

to GNDAUD,

V12to GNDAUD, V

VID

to GNDVID no load, TA= 0°C to +70°C, unless otherwise noted. Typical values are at TA = +25°C.)

V

VID

STANDBY QUIESCENT SUPPLY

CURRENT vs. TEMPERATURE

MAX9595 toc12

TEMPERATURE (°C)

V

VID

STANDBY QUIESCENT SUPPLY CURRENT (mA)

5025

35

40

45

50

30

075

ALL VIDEO OUTPUT AMPLIFIERS DISABLED

V12 QUIESCENT SUPPLY CURRENT

vs. TEMPERATURE

MAX9595 toc13

TEMPERATURE (°C)

V

12

QUIESCENT SUPPLY CURRENT (mA)

5025075

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

1.0

V

AUD

QUIESCENT SUPPLY CURRENT

vs. TEMPERATURE

MAX9595 toc14

TEMPERATURE (°C)

V

AUD

QUIESCENT SUPPLY CURRENT (mA)

5025075

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

0

INPUT CLAMP AND BIAS LEVEL

vs. TEMPERATURE

MAX9595 toc15

TEMPERATURE (°C)

INPUT CLAMP AND BIAS LEVEL (V)

5025075

0.7

0.9

1.1

1.3

1.7

1.5

1.9

2.1

2.3

2.5

0.5

BOTTOM LEVEL
CLAMP

BIAS

INPUT CLAMP CURRENT

vs. TEMPERATURE

MAX9595 toc16

TEMPERATURE (°C)

INPUT CLAMP CURRENT (μA)

5025075

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

2.0

V

IN

= 1.75V

INPUT CLAMP CURRENT

vs. INPUT VOLTAGE

MAX9595 toc17

INPUT VOLTAGE (V)

INPUT CLAMP CURRENT (mA)

4321

-0.4

-0.3

-0.2

-0.1

0

0.1

0.2

0.3

0.4

0.5

-0.5
05

OUTPUT BIAS VOLTAGE

vs. TEMPERATURE

MAX9595 toc18

TEMPERATURE (°C)

OUTPUT BIAS VOLTAGE (V)

5025

0.5

1.0

1.5

2.0

2.5

3.0

0

075

CHROMA

RGB, LUMA, CVBS

MAX9595

Audio/Video Switch for Dual SCART Connector

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Pin Description

PIN NAME FUNCTION

1 SDA Bidirectional Data I/O. I2C -compatible, 2-wire interface data input/output. Output is open drain.

2 SCL Serial Clock Input. I2C -compatible, 2-wire clock interface.

3 DEV_ADDR

Device Address Set Input. Connect to GNDVID to set write and read addresses of 94h or 95h,
respectively. Connect to V

VID

to set write and read address of 96h or 97h, respectively.

4 ENC_INL Digital Encoder Left-Channel Audio Input

5

Interrupt Output. INTERRUPT_OUT is an open-drain output that goes high impedance to
indicate a change in the slow switch lines, TV_SS or VCR_SS.

6 ENC_INR Digital Encoder Right-Channel Audio Input

7 N.C. No Connection. Not internally connected.

8 VCR_INR VCR SCART Right-Channel Audio Input

9 VCR_INL VCR SCART Left-Channel Audio Input

10 TV_INR TV SCART Right-Channel Audio Input

11 TV_INL TV SCART Right-Channel Audio Input

12 GNDAUD Audio Ground

13 AUD_BIAS

Audio Input Bias Voltage. Bypass AUD_BIAS with a 47µF capacitor and a 0.1µF capacitor to
AUDGND.

14 V

AUD

Audio Supply. Connect to a +5V supply. Bypass with a 10µF aluminum electrolytic capacitor in
parallel with a 0.47µF low-ESR ceramic capacitor to GNDAUD.

15 VCR_OUTR VCR SCART Right-Channel Audio Output

16 VCR_OUTL VCR SCART Left-Channel Audio Output

17

RF Modulator Mono Audio Output

18 TV_OUTL TV SCART Left-Channel Audio Output

19 TV_OUTR TV SCART Right-Channel Audio Output

20 V

12

+12V Supply. Bypass V12 with a 10µF capacitor in parallel with a 0.1µF capacitor to ground.

21 TV_SS TV SCART Bidirectional Slow-Switch Signal

22 VCR_SS VCR SCART Bidirectional Slow-Switch Signal

23 SET Filter Cutoff Frequency Set Input. Connect 100kΩ resistor from SET to ground.

24, 36 V

VID

Video and Digital Supply. Connect to a +5V supply. Bypass with a 0.01µF capacitor to GNDVID.
V

VID

also serves as a digital supply for the I2C interface.

25 VCRIN_FS VCR SCART Fast-Switching Input

26 ENCIN_FS Digital Encoder Fast-Switching Input

27 TVOUT_FS

TV SCART Fast-Switching Output. This signal is used to switch the TV to its RGB inputs for on­screen display purposes.

28 GNDVID Video Ground

29 RF_CVBS_OUT RF Modulator Composite Video Output. Internally biased at 1V.

30

TV SCART Luma/Composite Video Output. Internally biased at 1V.

31 TV_R/C_OUT

TV SCART Red/Chroma Video Output. Internally biased at 1V for red video signal and 2.2V for
chroma video signal.

INTERRUPT_OUT

RF_MONO_OUT

TV_Y/CVBS_OUT