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General Description

The MAX9670/MAX9671 dual SCART matrices route

audio and video signals between a set-top box

decoder chip and two external SCART connectors

under I

C control. Operating from a 3.3V supply and a

12V supply, the MAX9670/MAX9671 consume 70mW

during quiescent operation and 471mW during average

operation when driving typical signals into typical

loads. Video input detection, video load detection, and

a 2.5mW standby mode facilitate the design of intelli-

gent, low-power set-top boxes.

The MAX9670/MAX9671 audio section contains a

buffered crosspoint to route audio inputs to audio out-

puts and programmable volume control from -62dB to

0dB in 2dB steps. The DirectDrive

output amplifiers

create a 2V

RMS

full-scale audio signal biased around

ground, eliminating the need for bulky output capaci-

tors and reducing click-and-pop noise. The zero-cross

detection circuitry also further reduces clicks and pops

by enabling audio sources to switch only during a zero-

crossing. The MAX9671 offers TV left and right audio

inputs.

The MAX9670/MAX9671 video section contains a

buffered crosspoint to route video inputs to video out-

puts. The standard-definition video signals from the set-

top box decoder chip are lowpass filtered to remove

out-of-band artifacts.

The MAX9670/MAX9671 also support slow-switching

and fast-switching signals. An interrupt signal from the

MAX9670/MAX9671 informs the microcontroller when

the system status has changed.

Applications

Set-Top Boxes

TVs

DVD Players

Features

o 70mW Quiescent Power Consumption

o 2.5mW Standby Mode Consumption

o Programmable Audio Gain Control of -62dB to

0dB (TV Audio Outputs)

o Clickless, Popless, DirectDrive Audio

o Video Input and Video Load Detection

o Video Reconstruction Filter with 10MHz Passband

and 52dB Attenuation at 27MHz

o 3.3V and 12V Supply Voltages

MAX9670/MAX9671

Low-Power Audio/Video Switch with Audio

Volume Control for Dual SCART Connectors

________________________________________________________________

Maxim Integrated Products

19-4653; Rev 0; 7/09

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

EVALUATION KIT

AVAILABLE

Ordering Information

PART TEMP RANGE

PIN-

PACKAGE

TV R+L

AUDIO

INPUTS

MAX9670CTL+ 0°C to +70°C 40 TQFN-EP* No

MAX9671CTH+ 0°C to +70°C 44 TQFN-EP* Yes

Denotes a lead(Pb)-free/RoHS-compliant package.

EP = Exposed pad.

DirectDrive is a registered trademark of Maxim Integrated

Products, Inc.

Typical Application Circuit appears at end of data sheet.

C INTERFACE

REGISTERS AND

ACTIVITY

MONITOR

VIDEO FILTERS AND

CROSSPOINT

AUDIO CROSSPOINT

WITH DIRECTDRIVE

OUTPUTS, VOLUME

CONTROL

SLOW SWITCHING

FAST SWITCHING

CHARGE PUMP

AUD

VID

12V 3.3V3.3V

EP GNDVID

µC

VIDEO

ENCODER

STEREO

AUDIO

DAC

INTERRUPT

OUTPUT

RGB, Y/C, CVBS

SINGLE-ENDED R/L

STEREO AUDIO

RGB, Y/C, CVBS

CVBS

L/R AUDIO

(MAX9671 ONLY)

SLOW SWITCHING

Y/C, CVBS

RGB, Y/C, CVBS

L/R AUDIO

SLOW SWITCHING

STB CHIP

SCART

VCR

SCART

FAST SWITCHING

L/R AUDIO

(MAX9670 ONLY)

MAX9670/MAX9671

System Block Diagram

Summary of content (42 pages)

PAGE 1
9-4653; Rev 0; 7/09 KIT ATION EVALU E L B AVAILA Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors The MAX9670/MAX9671 dual SCART matrices route audio and video signals between a set-top box decoder chip and two external SCART connectors under I2C control. Operating from a 3.3V supply and a 12V supply, the MAX9670/MAX9671 consume 70mW during quiescent operation and 471mW during average operation when driving typical signals into typical loads.
PAGE 2
MAX9670/MAX9671 Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors ABSOLUTE MAXIMUM RATINGS Continuous Power Dissipation (TA = +70°C) 40-Pin TQFN-EP (derate 26.3mW/°C above +70°C) ...2105.3mW 44-Pin TQFN-EP (derate 26.3mW/°C above +70°C)...2222.2mW Operating Temperature Range...............................0°C to +70°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................
PAGE 3
Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors (V12 = 12V, VVID = VAUD = 3.3V, VGNDVID = VEP = 0V, no load, TA = 0°C to +70°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS -13 -4 +6 mV 2 % 2 µA AC-COUPLED INPUT Sync-Tip Clamp Level VCLP Sync-tip clamp Sync Crush Sync-tip clamp; percentage reduction in sync pulse (0.
PAGE 4
MAX9670/MAX9671 Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors ELECTRICAL CHARACTERISTICS (continued) (V12 = 12V, VVID = VAUD = 3.3V, VGNDVID = VEP = 0V, no load, TA = 0°C to +70°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS AC CHARACTERISTICS VOUT = 2VP-P, f = 100kHz to 5.
PAGE 5
Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors (V12 = 12V, VVID = VAUD = 3.3V, VGNDVID = VEP = 0V, no load, TA = 0°C to +70°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS Input Resistance VIN = -0.707V to +0.707V Input Bias Current VIN = 0, TA = +25°C Input Signal Amplitude f = 1kHz, THD < 1% Output DC Level Power-Supply Rejection Ratio MIN TYP MAX 10 MΩ 500 0.
PAGE 6
MAX9670/MAX9671 Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors ELECTRICAL CHARACTERISTICS (continued) (V12 = 12V, VVID = VAUD = 3.3V, VGNDVID = VEP = 0V, no load, TA = 0°C to +70°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN Input Current TYP MAX UNITS 70 100 µA Output Low Voltage 10kΩ to EP, 11.4V ≤ V12 ≤ 12.6V Output Medium Voltage 10kΩ to EP, 11.4V ≤ V12 ≤ 12.
PAGE 7
Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors (V12 = 12V, VVID = VAUD = 3.3V, VGNDVID = VEP = 0V, no load, TA = 0°C to +70°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 0.3 x VVID V OTHER DIGITAL I/O DEV_ADDR Low Level 0.7 x VVID DEV_ADDR High Level V DEV_ADDR Input Current TA = +25°C +1 µA Interrupt Output Low Voltage IOL = 0.5mA 0.
PAGE 8
Typical Operating Characteristics (continued) (VVID = VAUD = 3.3V, V12 = 12V, VGNDVID = VEP = 0V, video load is 150Ω to GNDVID, audio load is 10kΩ to EP, TA = +25°C, unless otherwise noted.) NO FILTER -20 -1 140 VOUT = 2VP-P 120 100 -2 -3 -4 FILTER -60 DELAY (ns) -40 DELAY (ns) ALL HOSTILE -80 -5 -6 -100 10M 100M 1M 100k 10M 100M FREQUENCY (Hz) FREQUENCY (Hz) FREQUENCY (Hz) VIDEO POWER-SUPPLY REJECTION RATIO vs. FREQUENCY VIDEO VOLTAGE GAIN vs. TEMPERATURE VIDEO OUTPUT VOLTAGE vs.
PAGE 9
Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors 2T NO FILTER 12.5T WITH FILTER MAX9670 toc13 MAX9670 toc14 VIDEO INPUT 200mV/div VIDEO INPUT 200mV/div VIDEO OUTPUT 500mV/div VIDEO OUTPUT 500mV/div 80ns/div 1µs/div 12.
PAGE 10
Typical Operating Characteristics (continued) (VVID = VAUD = 3.3V, V12 = 12V, VGNDVID = VEP = 0V, video load is 150Ω to GNDVID, audio load is 10kΩ to EP, TA = +25°C, unless otherwise noted.) VIDEO INPUT SYNC-TIP CLAMP VOLTAGE vs. TEMPERATURE 0 -1 -2 -3 -4 615 -5 605 600 595 590 580 0 25 50 75 25 0 50 75 TEMPERATURE (°C) TEMPERATURE (°C) VIDEO INPUT SYNC-TIP CLAMP CURRENT vs. TEMPERATURE VIDEO INPUT SYNC-TIP CLAMP CURRENT vs. INPUT VOLTAGE 1.2 1.1 1.0 0.9 0.8 MAX9670 toc22 1.
PAGE 11
Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors AUDIO CROSSTALK vs. FREQUENCY -20 VIN = 0.25VRMS -40 0.01 THD+N (%) CROSSTALK (dB) 0.1 MAX9670 toc25 0 MAX9670 toc26 TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY -60 -80 TVIN TO TVOUT TVIN TO VCROUT 0.001 -100 -120 0.0001 10 100 1k 10k 100k 1k 10k VAUD POWER-SUPPLY REJECTION RATIO (INPUT REFERRED) vs. FREQUENCY VVID QUIESCENT SUPPLY CURRENT vs.
PAGE 12
MAX9670/MAX9671 Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors Pin Description PIN NAME FUNCTION MAX9670 MAX9671 1 1 SDA Bidirectional I2C Data I/O. Output is open drain and tolerates up to 3.6V. 2 2 SCL I2C Clock Input 3 3 DEV_ADDR Device Address Set Input. Connect to GNDVID, VVID, SDA or SCL. See Table 3. Interrupt Output.
PAGE 13
Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors PIN NAME FUNCTION MAX9670 MAX9671 28 31 GNDVID 29 32 VCR_R/C_IN 30 33 VVID 31 34 ENC_C_IN 32 35 ENC_R/C_IN Encoder Red/Chroma Video Input 33 36 TV_R/C_OUT TV SCART Red/Chroma Video Output 34 37 VCR_R/C_OUT 35 38 36 39 TV_Y/CVBS_OUT TV SCART Luma/Composite Video Output 37 40 VCR_Y/CVBS_IN VCR SCART Luma/Composite Video Input 38 41 TV_Y/CVBS_IN 39 42 ENC_Y_IN 40 43 ENC_Y/CVBS_IN — —
PAGE 14
MAX9670/MAX9671 Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors ZCD MUTE ENC_INL MUTE VCR_INL VOLUME CONTROL 0dB TO -62dB (0.5VRMS FULL-SCALE INPUT) MUTE VOLUME CONTROL 0dB TO -62dB *TV_INL x4 TV_OUTL (2VRMS FULL-SCALE OUTPUT) x4 TV_OUTR x4 VCR_OUTL MUTE MUTE ENC_INR (2VRMS FULL-SCALE OUTPUT) VCR_INR x4 VCR_OUTR MUTE *TV_INR SCL REGISTER CONTROL SDA DEV_ADDR VAUD C1P CHARGE PUMP EP C1N CPVSS MAX9670/MAX9671 *MAX9671 ONLY. Figure 1.
PAGE 15
Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors VDD VDD/2 GND CONVENTIONAL DRIVER-BIASING SCHEME +VDD GND VOUT 2VDD -VDD DirectDrive BIASING SCHEME Figure 2. Conventional Driver Output Waveform vs. MAX9670/ MAX9671 Output Waveform. Clickless Switching The TV audio channel incorporates a zero-crossing detect (ZCD) circuit that minimizes click noise due to abrupt signal level changes that occur when switching between audio signals at an arbitrary moment.
PAGE 16
MAX9670/MAX9671 Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors ACTIVITY DETECT ACTIVITY DETECT ACTIVITY DETECT MAX9670/MAX9671 ACTIVITY DETECT TV_Y/CVBS_IN CLAMP VCR_Y/CVBS_IN CLAMP ENC_Y/CVBS_IN CLAMP ENC_Y_IN CLAMP LOAD SENSE TV_Y/CVBS_OUT AV = 2V/V LPF LPF MUTE LOAD SENSE VCR_R/C_IN CLAMP/BIAS ENC_R/C_IN CLAMP/BIAS LPF ENC_C_IN CLAMP/BIAS LPF AV = 2V/V VCR_Y/CVBS_OUT AV = 2V/V TV_R/C_OUT AV = 2V/V VCR_R/C_OUT AV = 2V/V TV_G_OUT AV = 2V/V TV_
PAGE 17
Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors The transparent sync-tip clamp is transparent when the incoming video signal is DC-coupled and at or above ground. Under such conditions, the clamp never activates. Therefore, the outputs of video DACs that generate signals between 0 and 1V can be directly connected to the MAX9670/MAX9671 inputs. The bias circuit accepts AC-coupled chroma, which is a subcarrier with the color information modulated onto it.
PAGE 18
MAX9670/MAX9671 Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors Video Input Control register (06h) while the selection of video sources that are sent to the VCR SCART connector are controlled by bits 0 to 2 of the VCR Video Input Control register (08h). See Tables 10, 14, and 16. The video outputs can be enabled or disabled by bits 2 through 7 of the Output Enable register (0Dh). See Table 18.
PAGE 19
Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors MAX9670/MAX9671 SDA tBUF tSU, STA tSU, DAT tHD, STA tHD, DAT tLOW tSP tSU, STO SCL tHIGH tHD, STA tR tF START CONDITION REPEATED START CONDITION STOP CONDITION START CONDITION Figure 6. I2C Serial-Interface Timing Diagram REPEATED START (Sr) condition, an acknowledge or a not acknowledge, and a STOP (P) condition. SDA operates as both an input and an open-drain output.
PAGE 20
MAX9670/MAX9671 Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors Acknowledge The acknowledge bit (ACK) is a clocked 9th bit that the MAX9670/MAX9671 use to handshake receipt of each byte of data when in write mode (see Figure 8). The MAX9670/MAX9671 pull down SDA during the entire master-generated ninth clock pulse if the previous byte is successfully received. Monitoring ACK allows for detection of unsuccessful data transfers.
PAGE 21
Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors S SLAVE ADDRESS 0 A REGISTER ADDRESS R/W NOT ACKNOWLEDGE FROM MASTER ACKNOWLEDGE FROM MAX9670/MAX9671 ACKNOWLEDGE FROM MAX9670/MAX9671 A Sr SLAVE ADDRESS REPEATED START 1 R/W A DATA BYTE A P 1 BYTE AUTOINCREMENT INTERNAL REGISTER ADDRESS POINTER Figure 11.
PAGE 22
MAX9670/MAX9671 Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors STEREO AUDIO DACS 1µF MAX9670 6.65kΩ ENC_INL R1* 1µF 6.65kΩ ENC_INR R1* *R1 VALUES DAC = CS4334/5/8/9: R1 = 4.53kΩ, 1% DAC = PCM1742: R1 = 5.57kΩ, 1% Figure 13. Application circuit to connect audio source to audio inputs. The 1µF capacitor connected to the ground-referenced resistors biases the audio signal at ground. The resistors attenuate the audio signal.
PAGE 23
Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors MAX9670/MAX9671 TV_SS ACTIVE VCR_SS ACTIVE TV_SS NOT ACTIVE VCR_SS NOT ACTIVE STATE 0 SEARCH AUDIO: INACTIVE VIDEO: INACTIVE SLOW SWITCH: LISTENING FOR ACTIVITY FAST SWITCH: INACTIVE TV_SS ACTIVE VCR_SS NOT ACTIVE TV_SS NOT ACTIVE VCR_SS ACTIVE TV_SS NOT ACTIVE VCR_SS NOT ACTIVE TV_SS NOT ACTIVE VCR_SS NOT ACTIVE TV_SS ACTIVE VCR_SS NOT ACTIVE TV_SS NOT ACTIVE VCR_SS ACTIVE STATE 1 TV-TO-VCR STATE 2 VCR-TO-TV AUDIO:
PAGE 24
MAX9670/MAX9671 Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors 0.1µF VCR_R/C_IN ENC_R/C_IN ENC_C_IN BIAS AV = 2V/V BIAS LPF BIAS LPF AV = 2V/V TV_R/C_OUT 75Ω VCR_R/C_OUT 75Ω MAX9670/MAX9671 TV SCART VCR SCART ON Figure 15. Gain-of-2 amplifier on VCR_R/C_OUT outputs chroma signal to VCR SCART connector. Notice that the pulldown switch on VCR_R/C_OUT is open. 0.
PAGE 25
Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors MAX9670/MAX9671 TV_OUTR 10kΩ MAX9670/MAX9671 MONO AUDIO 10kΩ TV_OUTL 75Ω TV SCART TV_Y/CVBS_OUT 75Ω OR GREATER 75Ω OR GREATER RF MODULATOR Figure 17.
PAGE 26
MAX9670/MAX9671 Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors 12V 3.3V 0.1µF V12 3.3V 0.1µF VVID 0.1µF VAUD VAUD TV_INL (MAX9671 ONLY) +3.3 V TV_INR (MAX9671 ONLY) STB CHIP VAUD CPVSS 2.55kΩ 7.68kΩ 1µF CPVSS VAUD 2.55kΩ 75Ω SDA MICROCONTROLLER 1µF 7.
PAGE 27
Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors ENC_R/C_IN 3.3V 0.1µF 75Ω 0.1µF 75Ω SCART CONNECTOR 3.3V 75Ω 75Ω TV_G_OUT ENC_G_IN 0.1µF SET-TOP BOX CHIP TV_B_OUT ENC_B_IN MAX9670/MAX9671 ENC_R/C_IN TV_R/C_OUT TV_G_OUT ENC_G_IN 0.1µF SET-TOP BOX CHIP 75Ω TV_R/C_OUT TV_B_OUT ENC_B_IN INPUTS SET TO SYNC-TIP CLAMP SCART CONNECTOR 75Ω INPUTS SET TO HIGH IMPEDANCE DAC DAC 3.3V 3.3V DAC DAC 3.3V 3.
PAGE 28
MAX9670/MAX9671 Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors Table 1.
PAGE 29
Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors MAX9670/MAX9671 Table 3. Slave Address DEV_ADDR B7 B6 B5 B4 B3 B2 B1 B0 GNDVID VVID SCL SDA 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 0 0 1 1 1 1 0 0 0 1 0 1 R/W R/W R/W R/W Table 4. I2C Register Values in State 0* WRITE ADDRESS (hex) 94h 96h 98h 9Ah READ ADDRESS (hex) 95h 97h 99h 9Bh Table 5.
PAGE 30
MAX9670/MAX9671 Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors Table 7. Quiescent Power Consumption OPERATING MODE Table 8. Average Power Consumption POWER CONSUMPTION (mW) Shutdown 0.13 Standby mode with no video activity (i.e., TV slow-switch and VCR slow-switch inputs are at ground). Standby mode is the power-on default. 2.83 Full-power mode with input video detection and video load detection active.
PAGE 31
Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors MAX9670/MAX9671 Table 9.
PAGE 32
MAX9670/MAX9671 Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors Table 11.
PAGE 33
Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors DESCRIPTION BIT 7 6 5 4 3 Input Sources for TV Video Input Sources for TV_G_OUT and TV_B_OUT 2 1 COMMENTS 0 TV_Y/CVBS_OUT TV_R/C_OUT 0 0 0 ENC_Y/CVBS_IN ENC_R/C_IN 0 0 1 ENC_Y_IN ENC_C_IN 0 1 0 VCR_Y/CVBS_IN VCR_R/C_IN 0 1 1 TV_Y/CVBS_IN 1 0 0 Not used Not used 1 0 1 Mute Mute 1 1 0 Mute Mute 1 1 1 Mute (power-on default) Mute (power-on default) TV_G_OUT TV_B_OUT 0 0 ENC
PAGE 34
MAX9670/MAX9671 Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors Table 16.
PAGE 35
Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors DESCRIPTION BIT 7 6 5 4 3 2 Set VCR Function Switching COMMENTS 1 0 0 0 Low (< 2V) internal source 0 1 Medium (4.5V to 7V); external SCART source with 16:9 aspect ratio 1 0 High impedance (power-on default) 1 High (> 9.
PAGE 36
MAX9670/MAX9671 Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors Table 19. Register 10H: Operating Modes DESCRIPTION BIT 5 4 3 2 1 COMMENTS 7 6 0 0 0 Shutdown 0 1 Standby mode (power-on default). Input video detection circuits are active. Audio circuitry is off unless video is detected. Once slow switch is detected, the signal paths between the VCR and TV SCART are connected. 1 0 Full-power mode with input video detection and video-load detection active.
PAGE 37
Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors MAX9670/MAX9671 Table 21. Register 0Fh: Video Activity Status DESCRIPTION BIT 7 6 5 4 3 2 1 TV CVBS Input Video Detection 0 TV CVBS Output Load 1 VCR CVBS Input Video Detection 0 VCR CVBS Output Load 1 0 ENC_Y/CVBS Input Video Detection ENC_Y_IN Input Video Detection 1 0 COMMENTS 0 No video detected. 1 Video detected. No video detected. Video detected. 0 No video detected. 1 Video detected.
PAGE 38
Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors MAX9670/MAX9671 Typical Application Circuit 12V 3.3V 3.3V 0.1µF V12 0.1µF VVID 0.1µF VAUD 7.68kΩ TV_INL (MAX9671 ONLY) +3.3 V 2.55kΩ 7.68kΩ TV_INR (MAX9671 ONLY) STB CHIP 2.55kΩ SDA MICROCONTROLLER TV_OUTR 75Ω SCL TV_OUTL INT 75Ω DEV_ADDR TV_SS 75Ω TV_B_OUT VIDEO ENCODER TV SCART 75Ω TV_G_OUT ENC_Y/CVBS_IN 75Ω TV_R/C_OUT 75Ω 75Ω ENC_R/C_IN TVOUT_FS 75Ω 75Ω ENC_G_IN TV_Y/CVBS_OUT 0.
PAGE 39
Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors VVID VCR_R/C_IN GNDVID TV_G_OUT TV_B_OUT VCR_G_IN VCR_B_IN ENC_G_IN ENC_B_IN VCRIN_FS N.C.
PAGE 40
Package Information For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. PACKAGE TYPE PACKAGE CODE DOCUMENT NO. 40 TQFN T4066+3 21-0141 44 TQFN T4477+2 21-0144 QFN THIN.
PAGE 41
Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors ______________________________________________________________________________________ 41 MAX9670/MAX9671 Package Information (continued) For the latest package outline information and land patterns, go to www.maxim-ic.com/packages.
PAGE 42
MAX9670/MAX9671 Low-Power Audio/Video Switch with Audio Volume Control for Dual SCART Connectors Package Information (continued) For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.