STV6410A中文资料

STV6410A

AUDIO/VIDEO SWITCH MATRIX

December 1998

TQFP64 (10 x 10 x 1.4mm)(Full Plastic Quad Flat Pack)ORDER CODE : STV6410AD

.I 2C BUS CONTROL .STANDBY MODE

VIDEO SECTION

.5 CVBS INPUTS, 4 CVBS OUTPUTS (ONE WITH SELECTABLE CHROMA TRAP FILTER).5 Y/C INPUTS, 3 Y/C OUTPUTS

.6dB GAIN ON ALL CVBS/Y AND C OUTPUTS .1 Y/C ADDER

.2 RGB/FB INPUTS, 1 RGB/FB OUTPUT WITH 6dB ADJUSTABLE GAIN

.VIDEO MUTING ON ALL THE OUTPUTS .3 SLOW BLANKING INPUTS/OUTPUTS

.SYNC BOTTOM CLAMP ON ALL CVBS/Y AND RGB INPUTS, AVERAGE ON C INPUTS .BANDWIDTH : 15MHz .CROSSTALK : 60dB Typ.AUDIO SECTION

.5 STEREO INPUTS, 4 STEREO OUTPUTS (TWO WITH LEVEL ADJUSTMENT).MONO SOUND OUTPUT

.STEREO TO MONO CAPABILITY ON ALL SCARTS

AUDIO MUTING ON ALL THE OUTPUTS

DESCRIPTION

The STV6410A is a highly integrated I 2C bus-con-trolled audio and video switch matrix, optimized for use in digital set-top box applications. It provides all the audio and video routings required in a full three scart set-top box design. It is also fully pin

compatible with STV6411A, the two scart version.

1/22

64636261605958575655545352515049

17181920212223242526272829303132

133

ROUT_TV GNDA RIN_TV V CCA YCVBSIN_TV V REF

GOUT_TV LOUT_VCR BOUT_TV ROUT_VCR LOUT_CINCH ROUT_CINCH CIN_TV LIN_TV LIN_VCR

YCVBSIN_VCR FBOUT_TV FBIN_AUX FBIN_ENC

ADD SCL SDA V CC12

YCVBSIN_AUX

SLB_TV YIN_AUX GNDV1SLB_VCR RCIN_AUX

GIN_AUX SLB_AUX BIN_AUX

R C O U T _T V

V C C 1

C V B S I N _S T B

L I N _A U X

Y C V B S I N _E N C

L O U T _T V

Y C V B S O U T _T V R O U T _A U X

C O U T _V C R

L O U T _A U X

Y C V B S O U T _V C R

A O U T _R F

V O U T _R F

G N D V 3

F I L T E R

V C C 3

C O U T _A U X

G N D V 2

V C C 2

Y C V B S O U T _A U X

R I N _A U X

Y I N _E N C

R I N _S T B

C I N _E N C

R C I N _E N C

L I N _S T B

R I N _E N C

G I N _E N C

L I N _E N C

B I N _E N C

R I N _V C R

C I N _V C R

6410A -01.E P S

PIN CONNECTIONS

PIN LIST

Pin Number

Symbol Description

1RCOUT_TV Red/chroma Output, to TV Scart 2LOUT_TV Audio Left Output, to TV Scart 3YCVBSOUT_TV Y/CVBS Output, to TV scart

4ROUT_AUX Audio Right Output, to AUX Scart 5COUT_VCR Chroma Output, to VCR Scart 6LOUT_AUX Audio Left Output, to AUX Scart 7YCVBSOUT_VCR

Y/CVBS Output, to VCR Scart

8AOUT_RF Audio (L+R) Output to RF Modulator 9VOUT_RF Video (CVBS) Output to RF Modulator 10GNDV3Video Switches Ground 311FILTER Chroma Trap Filter

12V CCV3Video Switches Supply 3 (8V)13COUT_AUX Chroma Output, to AUX Scart 14GNDV2

Video Switches Ground 2

15YCVBSOUT_AUX

Y/CVBS Output, to AUX Scart

6410A -01.T B L STV6410A

2/22

Pin Number

Symbol Description

16V CCV2Video Switches Supply 2 (8V)17FBOUT_TV Fast Blanking Output, to TV Scart 18FBIN_AUX Fast Blanking Input, from AUX Scart 19FBIN_ENC Fast Blanking Input, from Encoder 20ADD I 2C Bus IC Address Programmation 21SCL I 2C Bus Clock 22SDA I 2C Bus Data

23V CC12

Slow Blanking Power Supply (12V)24YCVBSIN_AUX

Y/CVBS Input from AUX Scart

25SLB_TV Slow Blanking Input/Ouput from TV 26YIN_AUX Y Input, from AUX Scart

27SLB_VCR Slow Blanking Input/Ouput from VCR 28RCIN_AUX Red/Chroma Input, from AUX Scart 29GNDV1Video Switches Ground 130GIN_AUX Green Input, from AUX Scart

31SLB_AUX Slow Blanking Input/Ouput from AUX 32BIN_AUX Blue Input, from AUX Scart 33V CCV1

Video Switches Supply 1 (8V)34CVBSIN_STB CVBS Input from STB

35LIN_AUX Audio Left Input, from AUX Scart 36YCVBSIN_ENC Y/CVBS Input from Encoder

37RIN_AUX Audio Right Input, from AUX Scart 38YIN_ENC Y Input, from Encoder

39RIN_STB Audio Right Input, from STB 40CIN_ENC Chroma Input, from Encoder 41LIN_STB Audio Left Input, from STB

42RCIN_ENC Red/Chroma Input, from Encoder 43RIN_ENC Audio Right Input, from Encoder 44GIN_ENC Green Input, from Encoder 45LIN_ENC Audio Left Input, from Encoder 46BIN_ENC Blue Input, from Encoder

47RIN_VCR Audio Right Input, from VCR Scart 48CIN_VCR Chroma Input, from VCR Scart 49LIN_VCR Audio Left Input, from VCR 50YCVBSIN_VCR

Y/CVBS Input from VCR Scart 51V REF

Voltage Reference Decoupling 52YCVBSIN_TV Y/CVBS Input, from TV Scart 53LIN_TV Audio Left Input, from TV Scart 54CIN_TV Chroma Input, from TV Scart 55V CCA Audio Switches Supply (8V)56RIN_TV Audio right input, from TV Scart 57GNDA Audio Switches Ground

58ROUT_CINCH Audio Right Output, to CINCH 59LOUT_CINCH Audio Left Output, to CINCH

60ROUT_VCR Audio Right Output, to VCR sCart 61BOUT_TV Blue Output, to TV Scart

62LOUT_VCR Audio Left Output, to VCR Scart 63GOUT_TV Green Output, to TV Scart

ROUT_TV

Audio Right Output, to TV Scart

6410A -01.T B L

PIN LIST (continued)

STV6410A

3/22

FB SWITCH

4V 0V

RGB SWITCH

C SWITCH

Y/CVBS SWITCH

C SWITCH

Y/CVBS SWITCH

C SWITCH

Y/CVBS SWITCH

CINCH SWITCH

AUX SWITCH

VCR SWITCH

TV SWITCH

646dB

6dB

-14dB

6dB

0/6dB

-14dB 0/6dB

-14dB

0/6dB

STEREO/MONO

LOUT_TV

ROUT_TV

AOUT_RF 60624

6ROUT_VCR LOUT_VCR LOUT_AUX ROUT_AUX

5859LOUT_CINCH

ROUT_CINCH

5COUT_VCR

YCVBSOUT_VCR

252731SLOW BLANK,I/O MONITOR

SLB_TV

SLB_VCR SLB_AUX 1513YCVBSOUT_AUX

COUT_AUX

YCVBS/OUT_TV

6dB

616317GOUT_TV BOUT_TV FBOUT_TV

RCOUT_TV

VOUT_RF

11FILTER TRAP

B_ENC B_AUX G_ENC G_AUX R/C_ENC R/C_AUX MUTE

R/C_AUX R/C_ENC C_ENC C_VCR MUTE

MUTE

Y_ENC CVBS/Y_TV CVBS_STB CVBS/Y_VCR CVBS/Y_ENC Y_ENC CVBS_STB CVBS/Y_VCR CVBS/Y_ENC CVBS/Y_AUX Y_AUX L_ENC L_STB L_VCR L_AUX R_ENC R_STB R_VCR R_AUX L_ENC L_STB L_TV L_AUX R_ENC R_STB R_TV R_AUX L_ENC L_STB L_TV R_ENC R_STB R_TV L_VCR R_VCR L_ENC L_STB L_TV R_ENC R_STB R_TV L_VCR R_VCR L_AUX R_AUX R/C_ENC C_ENC C_VCR C_TV R/C_ENC C_ENC C_AUX C_TV Y_AUX CVBS/Y_TV CVBS_STB CVBS/Y_AUX CVBS/Y_ENC Y_ENC 4339564737

5349454135382634

503624

484042283044463218

19FBIN_ENC FBIN_AUX BIN_ENC BIN_AUX GIN_ENC GIN_AUX RCIN_ENC RCIN_AUX CIN_ENC CIN_VCR YCVBSIN_AUX CIN_TV YCVBSIN_ENC YCVBSIN_VCR CVBSIN_STB YCVBSIN_TV YIN_AUX YIN_ENC LIN_ENC LIN_STB LIN_TV LIN_VCR LIN_AUX RIN_ENC RIN_STB RIN_TV RIN_VCR RIN_AUX 2122

SCL SDA I 2C B U S D E C O D E R

STV6410A

STEREO/MONO

6410A -02.E P S

BLOCK DIAGRAM

STV6410A

4/22

ELECTRICAL CHARACTERISTICS

T amb = 25°C, AV CC = VV CC = 8V, V CC12 = 12V, R LOUTA = 10k ?, R GA = 600?, R GV = 50?, R LOUTV = 4.7k ?,unless otherwise specified.

Symbol Parameter

Test Conditions

Min.Typ.Max.Unit AV CC Audio Operating Supply Voltage 7.588.5V VV CC Video Operating Supply Voltage 7.588.5V V CC12Slow Blanking Control Supply Voltage 11.2

1212.8V ACTIVE (all channels ON)

I CCA Audio Supply Current AV CC = 8V, no input signal 1015mA I CCV Video Supply Current (Iccv1 + Iccv2 + Iccv3)VV CC = 8V, no input signal 65

I CC12

12V Supply Current

V CC12 = 12V

SlBlk input mode

SlBlk output mode, no load 02.023μA mA STANDBY (all channels OFF)I CCAstd Audio Supply Current in stand by mode AV CC = 8V 1.2mA I CCVstd

Video Supply Current in stand by mode (I CCV1 + I CCV2 + I CCV3)

VV CC = 8V

6410A -04.T B L ABSOLUTE MAXIMUM RATINGS

Symbol Parameter

Value Unit AV CC ,VV CC

Supply voltage for Audio and Video Sections

10V V I Voltage at pin i to GND. Except SDA, SCL at 5.5V max 0, V CC V V CC12Supply Voltage for Slow Blanking Sections 13.2V V SLBK Voltage at slow blanking pins to GND

0, V CC12

V VESD Maximum ESD Voltage allowed (100pF capacitor discharged through 1.5k ? serial resistor - Human Body Model)± 4kV

T oper Operating Ambient Temperature 0, +70o C T stg

Storage Temperature

-20, +150

6410A -02.T B L THERMAL DATA

Symbol Parameter

Value Unit

R th (j-a)

Junction-ambient Thermal Resistance

Max.

C/W

6410A -03.T B L

STV6410A

5/22

ELECTRICAL CHARACTERISTICS (continued)

T amb = 25°C, AV CC = VV CC = 8V, V CC12 = 12V, R LOUTA = 10k ?, R GA = 600?, R GV = 50?, R LOUTV = 4.7k ?,unless otherwise specified.

Symbol Parameter

Test Conditions

Min.

Typ.

Max.

Unit

AUDIO SECTION SVR100

Supply Voltage Rejection

V RIPPLE = 500mV RMS at f = 100Hz,Gain = 0dB,

V REF filter cap = 47μF V REF filter cap = 220μF 607282dB dB SVR1K Supply Voltage Rejection V RIPPLE = 500mV RMS at f = 1kHz,Gain = 0dB 70

80dB V INDC Input DC Level AV CC = 8V

V CC /2

V V INAC Input signal amplitude 2

V RMS R IN Input Resistance 45

55k ?R INmatch Input resistance matching ±1

±10

%F range Bandwith

-3dB, 0.5V RMS , R L = 10k ?, Gain = 0dB 50

kHz Flatness Spread of gain in audio band

0.5V RMS , 20Hz to 20kHz, Gain = 0dB

0.5

dB Cs Channel Separation (from audio inputs)Between L &R of TV outputs V IN = 0.5V RMS , f = 1kHz, on one input,

R L =10k ?, Gain = 0dB

80709074dB dB Ci Channel Isolation from video inputs V IN = 1 V PP , f = 15kHz, on one input,R L = 10k ?, Gain = 0dB 70

85dB V OUT Output DC Level AV CC = 8V

V CC /2V V OFF DC Offset change Switching between inputs

1±15

mV R OUT Output Resistance

?eNI Equivalent Input Voltage Noise BW = 20Hz, 20kHz, Gain = 0dB 5

μV G00dB Gain 0.5V RMS , R L = 10k ?, Gain = 0dB -0.5+0.5dB G STEP Step of Gain

-14dB to +6dB

1.752

2.25dB G MATCH1Gain matching between different inputs on one output

V IN = 0.5V RMS , 1kHz, Gain = 0dB -0.50.5dB G MATCH2Gain matching between Left/Right outputs of one input channel V IN = 0.5V RMS , 1kHz, Gain = 0dB -0.5

0.5dB THD

Total Harmonic Distorsion

1kHz, LPF @ 80kHz V IN = V OUT = 0.5V RMS V IN = V OUT = 2V RMS 0.0020.0030.05%%V CL Output clipping Level THD = 0.2%, 1kHz

2.1 2.25V RMS

R L Output Load Resistance V IN = 1V RMS , THD = 0.3%, Gain = 0dB 2 2.25k ?Mute

Mute Suppression

V IN = 0.5V RMS , on one input

90dB

6410A -05.T B L

STV6410A

6/22

ELECTRICAL CHARACTERISTICS (continued)

T amb = 25°C, AV CC = VV CC = 8V, V CC12 = 12V, R LOUTA = 10k ?, R GA = 600?, R GV = 50?, R LOUTV = 4.7k ?,unless otherwise specified.

Symbol Parameter Test Conditions Min.Typ.Max.Unit

VIDEO SECTION

V DCIN DC Input Level Bottom Synch Pulse 2V I CLAMP Clamping current at V DCIN - 400mV 1

2mA I LEAK Input Leakage Current V IN = V DCIN + 1V

110

μA C IN Input Capacitance 2pF V IN Max Input Signal VV CC = 8V 1.52V PP DYN Dynamic Output Signal

VV CC = 8V

34V PP BW

Bandwidth at -3dB Y/CVBS

RGB

Y/C mixer (on RF out)V IN = 1V PP V IN = 1VP P

V INY = 1V PP , V INC = muted 151510181815MHz MHz MHz CT Crosstalk Isolation between Channels V IN = 1V PP at f = 5MHz,on one input

60dB R OUT Output Resistance 50?R LOAD Load Impedance 1 4.7∞k ?G RGB Gain at RGB outputs

V IN = 1V PP , gain set to 6dB 5.56 6.5dB G RGBM Gain matching between R, G, B V IN = 1V PP , gain set to 6dB -0.300.3dB G RGBSTEP Step of Gain

3dB to 6dB 0.751 1.25dB G YCVBS Gain on Y/CVBS channels

V IN = 1V PP 5.56 6.5dB G YCVBSM Gain matching between Y, CVBS inputs V IN = 1V PP

-0.500.5dB DC OUT DC Output Voltage Bottom sync pulse 1.1 1.3V DC OUT RF RF Output Voltage Bottom sync pulse 1.5

1.8V DPHI Differential Phase V IN = 1V PP , 4.43MHz 0.7°DG Differential Gain V IN = 1V PP , 4.43MHz 0.4

%Mute Mute Suppression V IN = 1V PP at f = 5MHz,on one input -55dB I VOUT Output current V OUT DC @ +1V

1.5

2.5mA CHROMA SECTION

V DCIN DC Input Level 3V R IN Input Resistance 45

55k ?C IN Input Capacitance 2pF V IN Max Input Signal 1.52V PP Dyn Dynamic Output Signal 3 3.8V DC OUT DC Output Voltage 1.9 2.3V CBW Chroma Bandwidth

C IN = 1V PP at - 3dB 1019MHz CT Crosstalk Isolation between Channel V IN = 1V PP at f = 5MHz,on one input

52dB R OUT Output Resistance 50?G OUTC Gain at OUTC

V IN = 1V PP 5.56 6.5dB G CM Gain matching between C inputs V IN = 1V PP

-0.50

0.5

dB Mute Mute Suppression

V IN = 1V PP at f = 5MHz,on one input

CtoYdel Chroma to luma delay,source Y/C Pin other than RF_OUT 1,V PP @ 5MHz ±4±20ns CtoYdel

Chroma to luma delay,source Y/C

Pin RF_OUT

±4

±20

6410A -06.T B L

STV6410A

7/22

ELECTRICAL CHARACTERISTICS (continued)

T amb = 25°C, AV CC = VV CC = 8V, V CC12 = 12V, R LOUTA = 10k ?, R GA = 600?, R GV = 50?, R LOUTV = 4.7k ?,unless otherwise specified.

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

SLOW BLANKING SECTION INPUT (Input mode V CC8 = 8V ±5%)SLBlow Input Low Level Threshold 2.5 3.254V SLBhigh Input High Level Threshold 7.5

8.259V I IN Input current

50100μA OUTPUT (Output mode V CC12 = 12V ±5%, V CC8 = 8V ±5%, R LOAD > 10k ?)

SLBLOW Output Low Level (int. TV)00.02 1.5V SLBMED Output Med Level (ext. 16/9)5 5.75 6.5V SLBHIGH

Output High Level (ext. 4/3)

1011

FAST BLANKING SECTION INPUT (Input mode V CCV = 8V ±5%)FBlow/high Input Low/High Level Threshold

0.4

0.70.9V I IN Input current 2

μA

OUTPUT (Output mode V CCV = 8V ±5%, R LOAD > 1k ?)

FB LOW Output Low Level I IN = 1.0mA I IN = 0.2mA 00.70.3V V FB HIGH Output High Level

I OUT = 1.0mA

3.6

4 4.4

V FB DEL Fast blanking to RGB delay

at 50% on digital RGB transients,at 2.7V ON FB rise transient, at 1.5V on FB fall C LOAD = 10pF max 30

FB TRANS

Fast Blanking transitions at FB output Rise Time Fall Time

C LOA

D = 10pF max

between 10% and 90%between 90% and 10%

3030ns ns ADDRESS SELECTION INPUT ADDsel_L Address selection low level 0

0.2V

ADDsel_H Address selection high level 4

V CC (8V)V I LEAK

Leakage Current

μA

6410A -07.T B L

STV6410A

8/22

ELECTRICAL CHARACTERISTICS (continued)

T amb = 25°C, AV CC = VV CC = 8V, V CC12 = 12V, R LOUTA = 10k ?, R GA = 600?, R GV = 50?, R LOUTV = 4.7k ?,unless otherwise specified.

Symbol

Parameter Test Conditions Min.Typ.Max.Unit

I 2C BUS CHARACTERISTICS SCL V IL Low Level Input Voltage -0.3 1.5V V IH High Level Input Voltage 3 5.5V I LI Input Leakage Current V IN = 0 to 5.5V

-100

10μA f SCL Clock Frequency 0

100kHz t R Input Rise Time 1.5V to 3V 1μs t F Input Fall Time 1.5V to 3V 300ns C l Input Capacitance 10

pF SDA V IL Low Level Input Voltage -0.3 1.5V V IH High Level Input Voltage 3 5.5V I LI Input Leakage Current V IN = 0 to 5.5V -10

10μA C l Input Capacitance 10pF t R Input Rise Time 1.5V to 3V 1μs t F Input Fall Time

1.5V to 3V 300ns V OL Low level Output Voltage I OL = 3mA 0.4V t F Output Fall Time 3V to 1.5V 250ns C L Load Capacitance

400

TIMING t LOW Clock Low Period 4.7μs t HIGH Clock High Period 4μs t SU,DAT Data Set-up Time 250ns t HD,DAT Data Hold Time

0340

ns t SU,STO Set-up Time from Clock High to Stop 4μs t BUF Start Set-up Time following a Stop 4.7μs

t HD,STA Start Hold Time

4μs t SU,STA

Start Set-up Time following Clock Low to High Transition

4.7

μs

6410A -08.T B L

STV6410A

9/22

I2C BUS SELECTION

Data transfers follow the usual I2C format: after the start condition (S), a 7-bit slave address is sent, followed by an eighth bit which is a data direction bit (W). A 8-bit subadress is sent to select a register, followed by a 8-bit data word to put in it.

The IC’s I2C bus decoder permits the automatic incrementation mode in write mode.

String Format

Write only mode (S : start condition, P : stop condition, A : acknowledge)

S SLAVE ADDRESS0A SUBADDRESS A DATA A P

Read only mode

S SLAVE ADDRESS1A DATA A P Slave Address

Address A6A5A4A3A2A1A0 Value100101X

Auto Increment Mode

S SLAVE ADDRESS0A SUBADDRESS A DATA0A DATA1A........DATAN A P

I2C Bus Address

Write Address:1001 01X0

Read Address:1001 01X1

Address Selection Pin Grounded:X = 0, write address = 94HEX, read address = 95HEX

Address Selection Pin to Supply:X = 1, write address = 96HEX, read address = 97HEX

Input Signals Summary (Write Mode)

Reg.

Address

(HEX)

DATA D7DATA D6DATA D5DATA D4DATA D3DATA D2DATA D1DATA D0 00TV Audio Level Adjustment0/6dBGain TV Mono TV Audio Outputs control

01Cinch Audio Level Adjustment0/6dBGain Not used Cinch Audio Outputs control 02AUX Mono VCR Mono AUX Audio Outputs control VCR Audio Outputs control

03Not used TV chroma

mute Y/CVBS & Chroma TV outputs control TV RF ouput control TV R/C ouput control

04TV RGB outputs control TV FB Output control RGB Gain R/Csub

AUX Clamp R/Csub Encoder Clamp

AUX

Chroma

Mute

AUX Y/CVBS &

Chroma Outputs control

VCR

Chroma

Mute

VCR Y/CVBS &

Chroma Outputs control

06Not used Not used Slow Blanking

AUX SCART Slow Blanking

VCR SCART

Slow Blanking

TV SCART

07VCR

Output OFF

AUX

Output OFF

TV Output

OFF

ENCOD

Clamp

disable

TV Clamp

disable

ASTB

Clamp

disable

VCR

Clamp

disable

AUX

Clamp

disable

08Not used Not used Not used Not used Not used Not used RF Mod

Output OFF

CINCH Output OFF

Not used data must be put to "0" STV6410A

10/22

Input Signals (Write Mode)Data Byte

TV Audio Output

Comments

d7d6d5d4d3d2d1d000

Audio Output selection

X X X X X 000Muted

X X X X X 001AUX inputs selected X X X X X 010VCR inputs selected X X X X X 011ASTB inputs selected X X X X X 100NOT ALLOWED X X X X X 101Encoder inputs selected X X X X X 110NOT ALLOWED X

X X X X 111NOT ALLOWED Stereo or Mono Mode 1X X X X 0X X X 0 = Stereo X X X X 1X X X 1 = Mono 6dB Extra Gain 1X X X 0X X X X 0 = 0dB X X X 1X X X X 1 = +6dB Level Adjustment

000X X X X X 0dB Adjustment

-14dB Adjustment (-2dB/step)

Audio Cinch Output

Comments

d7d6d5d4d3d2d1d001

Audio Output Selection

X X X X X 000Muted

X X X X X 001AUX inputs selected X X X X X 010VCR inputs selected X X X X X 011ASTB inputs selected X X X X X 100TV inputs selected X X X X X 101Encoder input selected X X X X X 110NOT ALLOWED X

X X X X 111NOT ALLOWED 6dB Extra Gain 1X X X 0X X X X 0 = 0dB X X X 1X X X X 1 = +6dB Level Adjustment

000X X X X X 0dB Adjustment

-14dB Adjustment (-2dB/step)

I 2C BUS SELECTION (continued)STV6410A

11/22

VCR And AUX Audio Outputs Selection

Bits Data

Comments

d7d6d5d4d3d2d1d002

VCR Audio Output Selection

X X X X X 000Muted

X X X X X 001AUX inputs selected X X X X X 010NOT ALLOWED X X X X X 011ASTB inputs selected X X X X X 100TV inputs selected X X X X X 101Encoder inputs selected X X X X X 110

NOT ALLOWED

X X X X X 111NOT ALLOWED X 0X X X X X X 0 =

Stereo X

1X X X X X X 1 = Mono AUX Audio Output Selection

X X 000X X X Muted

X X 001X X X NOT ALLOWED X X 010X X X VCR inputs selected X X 011X X X

ASTB inputs selected

X X 100X X X TV inputs selected X X 101X X X Encoder inputs selected X X 110X X X NOT ALLOWED X X 111X X X NOT ALLOWED 0X X X X X X X 0 = Stereo 1

1 =

Mono

I 2C BUS SELECTION (continued)

STV6410A

12/22

TV Video Output

Bits Data

Comments

d7d6d5d4d3d2d1d003

R/C TV Output Selection 1X X X X X X X 0Red signal selected X X X X X X X 1Chroma signal selected RF output : adder control and chroma subcarrier filter selection

X X X X X X 0X CVBS to RF output X X X X X X 1X Y+C to RF output X X X X X 0X X Filter not active X

X X X X 1X X Filter active

Y/CVBS output and chroma signal selection

X X 000X X X Y/CVBS & chroma muted X X 001X X X Y/CVBS_AUX & R/C_AUX X X 010X X X Y_AUX & R/C_AUX X X 011X X X Y/CVBS _VCR & C_VCR X X 100X X X CVBS_ASTB & Chr. muted X X 101X X X Y/CVBS_ENC & R/C_ENC X X 110X X X Y_ENC & C_ENC X

X 111X X X NOT ALLOWED

Chroma switch muting

X 0X X X X X X Chroma Output controlled by d5-d4-d3 from register 03.X

1X X X X X X Chroma Output forced to mute.04

ENCODER R/Csub Clamp 1X X X X X X X 0Bottom Level Clamp X X X X X X X 1Average Level Clamp AUX R/Csub Clamp 1X X X X X X 0X Bottom Level Clamp X X X X X X 1X Average Level Clamp RGB output Gain 2X X X X 00X X +6dB gain

X X X X 11X X +3dB gain (1dB/Step)FB Output

X X 00X X X X FB forced to low level X X 01X X X X FB forced to high level X X 10X X X X FB from Encoder X

X 11X X X X FB from AUX RGB ouputs selection

00X X X X X X Muted

01X X X X X X RGB_Encoder selected 10X X X X X X RGB_AUX selected 1

NOT ALLOWED

I 2C BUS SELECTION (continued)

STV6410A

13/22

VCR And AUX Video Outputs

Comments

d7d6d5d4d3d2d1d005

VCR Y/CVBS & Chroma Outputs Selection

X X X X X 000Y/CVBS & chroma muted X X X X X 001Y/CVBS_AUX & R/C_AUX X X X X X 010Y_AUX & R/C_AUX X X X X X 011NOT ALLOWED

X X X X X 100CVBS_ASTB & Chr. muted X X X X X 101Y/CVBS_ENC & R/C_ENC X X X X X 110Y_ENC & C_ENC X

X X X X 111Y/CVBS_TV & C_TV

VCR Chroma Output Muting

X X X X 0X X X Chroma Output controlled by d2-d1-d0 from register 05.X X X X 1X X X Chroma Output forced to mute.AUX Video Output Selection

X 000X X X X Y/CVBS & chroma muted X 001X X X X NOT ALLOWED X 010X X X X NOT ALLOWED X 011X X X X Y/CVBS_VCR & C_VCR X 100X X X X CVBS_ASTB & Chr. muted X 101X X X X Y/CVBS_ENC & R/C_ENC X 110X X X X Y_ENC & C_ENC X

111X X X X Y/CVBS _TV & C_TV

AUX Chroma Output Muting

0X X X X X X X Chroma Output controlled by d6-d5-d4 from register 05.1

Chroma Output forced to mute.

Slow Blanking Switches

Bits Data

Comments

d7d6d5d4d3d2d1d006

Slow Blanking TV SCART

X X X X X X 00Input mode X X X X X X 01Output < 2V X X X X X X 10Output 16/9 format X

X X X X X 11Output 4/3 format Slow Blanking VCR SCART

X X X X 00X X Input mode X X X X 01X X Output < 2V X X X X 10X X Output 16/9 format X

X X X 11X X Output 4/3 format Slow Blanking AUX SCART

X X 00X X X X Input mode X X 01X X X X Output < 2V X X 10X X X X Output 16/9 format X

Output 4/3 format

I 2C BUS SELECTION (continued)

STV6410A

14/22

Standby Modes Selection

Data

Comments

d7d6d5d4d3d2d1d0

07AUX Clamps Disabling1X X X X X X X0Clamp Active

X X X X X X X1Clamp Disabled VCR Clamps Disabling1X X X X X X0X Clamp Active

X X X X X X1X Clamp Disabled ASTB Clamps Disabling1X X X X X0X X Clamp Active

X X X X X1X X Clamp Disabled TV Clamps Disabling1X X X X0X X X Clamp Active

X X X X1X X X Clamp Disabled Encoder Clamps Disabling1X X X0X X X X Clamp Active

X X X1X X X X Clamp Disabled TV/RGB Output Disabling1X X0X X X X X Audio & Video Outputs ON

X X1X X X X X Audio & Video Outputs OFF AUX Output Disabling1X0X X X X X X Audio & Video Outputs ON

X1X X X X X X Audio & Video Outputs OFF VCR Output Disabling10X X X X X X X Audio & Video Outputs ON

1X X X X X X X Audio & Video Outputs OFF 08CINCH Output Disabling1X X X X X X X0CINCH Output ON

X X X X X X X1CINCH Output OFF RF MOD Output Disabling1X X X X X X0X RF MOD Output ON

X X X X X X1X RF MOD Output OFF Output Signals (Read Mode)

Data Byte

Description Bits

Data

Comments

d7d6d5d4d3d2d1d0

Slow Blanking TV SCART2X X X X X X01Input < 2V

X X X X X X10Input 16/9 format

X X X X X X11Input 4/3 format Slow Blanking VCR SCART2X X X X01X X Input < 2V

X X X X10X X Input 16/9 format

X X X X11X X Input 4/3 format Slow Blanking AUX SCART2X X01X X X X Input < 2V

X X10X X X X Input 16/9 format

X X11X X X X Input 4/3 format

I2C BUS SELECTION (continued)

STV6410A

15/22

Power-on Reset - Bus Register Initial Conditions

Power on reset is active when the power supply voltage is below (Tbf) volts.Not significant bits (X) are preset to "0"

HEX DATA COMMENTS

d7d6d5d4d3d2d1d00000000000Audio TV Output Muted,Stereo Mode,0dB Gain, 0dB Gain Adjustment.010*******Audio Cinch Output Muted,0 dB Gain, 0dB Gain Adjustment.020*******Audio VCR Output Muted,Audio AUX Output Muted.

0300000000Red signal selected on R/C_TV output, CVBS to RF ouput,TV video and

chroma switches muted, Chroma ouput controlled by d5-d4-d3 from register 03.

0400000000Encoder R/Csub Bottom Level Clamp,AUX R/Csub Bottom Level Clamp,RGB Outputs 6dB Gain, FB Output forced to 0V, RGB outputs muted.0500000000VCR Video and chroma switches Muted, VCR Chroma Output controlled by d2-d1-d0 from register 05,AUX Video and chroma switches Muted,AUX Chroma Output controlled by d6-d5-d4 from register 05.

0600000000TV SCART Slow Blanking Input Mode,VCR SCART Slow Blanking Input Mode, AUX SCART Slow Blanking Input Mode.

0700000000AUX, VCR, ASTB, TV, ENCODER Clamps Active ; TV/RGB, AUX, VCR Outputs ON.

Cinch, RF Mod Outputs ON.

I 2C BUS SELECTION (continued)

STV6410A

16/22

V CC 8V

15k W

tri

2V + V D

Protected Pad

6410A -03.E P S

Figure 1 :Bottom Clamped Video Inputs (Pins 24,

26, 30, 32 ,34, 36, 38, 44, 46, 50, 52)

V CC 8V

tri

Protected Pad

I B

V CC 8V

25k 25k 6410A -04.E P S

Figure 2 :Average Clamped Video Inputs

(Pins 40, 48, 54)

INPUT/OUTPUT GROUPS

V CC 8V

V CC /2

Protected Pad

I B

50k 6410A -05.E P S

Figure 3 :Audio Inputs (5 Stereo)

(Pins 35-37, 39-41, 47-49, 53-56)

V CC 8V

Protected Pad

606410A -06.E P S Figure 4 :Audio Outputs (4 Stereo +1)

(Pins 58, 59, 60-62, 4-6, 8)

V CC 8V

Protected Pad

1001k V CC 8V

6410A -07.E P S

Figure 5 : Trap Filter (Pin 11)

V CC 8V

Protected Pad

50V CC 8V

5k 5k 6410A -08.E P S

Figure 6 :Video Outputs

(Pins 61, 63, 1, 3, 5, 7, 9, 13,15)

STV6410A

17/22

V CC 8V

Protected Pad

V CC 8V

40k 40k I B

I B

6410A -09.E P S

Figure 7 : V REF External Capacitor (Pin 51)

V CC 12V

Protected Pad

80k 1k 25k 80k V CC 12V

6410A -10.E P S

Figure 8 : Slow Blanking (Pins 25, 27, 31)

INPUT/OUTPUT GROUPS (continued)V CC 8V

Protected Pad

6410A -11.E P S

Figure 9 : Input Fast Blanking (Pins 18, 19)V CC 8V

Protected Pad

25k 1k 506410A -12.E P S Figure 10 : Output Fast Blanking (Pin 17))

V CC 8V

Protected Pad

10k 6410A -13.E P S

Figure 11 : I 2C Bus (Add) (Pin 20)

V CC 8V

Protected Pad

10k 6410A -14.E P S

Figure 12 : I 2C Bus (SCL) (Pin 21)

STV6410A

18/22

V CC 8V

Protected Pad

10k Acknowledge

6410A -15.E P S

Figure 13 : I 2C Bus (SDA) (Pin 22)

INPUT/OUTPUT GROUPS (continued)RF MOD

R/C G B

FAST BLANK CVBS/Y C

AUDIO L AUDIO R AUDIO L AUDIO R

Y AUDIO L AUDIO R CVBS R/C G B

FAST BLANK CVBS/Y AUDIO L AUDIO R Y

CVBS/Y AUDIO L AUDIO R

SLOW BLANK

CINCH OUTPUT

SCART2AUX

ANALOG STB

ENCODER

R/C G B

FAST BLANK CVBS/Y AUDIO L AUDIO R CVBS/Y AUDIO L AUDIO R

SLOW BLANK SCART1TV

CVBS

AUDIO L+R CVBS/Y AUDIO L AUDIO R AUDIO L AUDIO R

SLOW BLANK

SCART3VCR

CVBS/Y C

STV6410A

C R

AUDIO SWITCHES

SLOW BLANK,I/O CONTROL

R, G, B, FB SWITCHES

CVBS/Y SWITCHES

CHROMA SWITCHES

6410A -16.E P S APPLICATION DIAGRAM

STV6410A

19/22

APPLICATION NOTE

1 - Audio Part 1.a - Inputs

The audio inputs are designed to follow sources up to (at least) 2V RMS (that is around 6V PP ) with an expected DC level of V CC /2 (4V typ.). That’s why the device is providing this DC polarization. That means that in most of the cases the inputs are AC coupled via chemical capacitors. The recom-mended values are 1μF, 2.2μF or 4.7μF (internal polar. is made via a 50k ? resistor). I want to point out that the internal polarization is filtered by an external capacitor (on Pin called ‘V REF ’). This ca-pacitor contribute to good performance of the de-vice. Its value should be 47μF or more (coupled with an 47nF HF cap. for internal video references).220 4.7F

12k Audio In

STV6410A

L/R Audio

6410A -17.E P S

Figure 14 : Audio Inputs

NB: In some particular cases (loopback from out-puts to inputs) the AC coupling capacitor can be removed... but some small offsets in the audio chain can cause some noise while switching from one input to another.

1.b - Outputs

Audio output buffers are able to provide more than 2.1V RMS (around 6V PP ) on a typical load of 10k ?(in fact a 2k ? load is acceptable). The DC level is once more V CC /2 for best dynamic https://www.360docs.net/doc/228983068.html,ually some AC coupling capacitors are used at the outputs. To drive some typical 10k ? loads, it is normal to use capacitors with value 5 to 10 times the value of the input capacitors. That gives a value between 4.7μF and 47μF. Moreover it can be a good idea to insert resistors (220? or 470?) in the audio outputs. That will provide a protection for output stages. No external drivers or buffers are needed in typical use of the device. 2 - Video Part 2.a - Inputs

Video inputs need to be AC coupled. But only some small capacitor values are requested thanks to the internal clamps provided by these devices. Usually some 100nF HF capacitors (47nF to 220nF) are enough to provide good performances on Y,CVBS,RGB and C inputs.

Chrominance inputs : - average clamp - that means that the DC is measured as the average value of the input signal and set to an internal reference (close to 3V). The dynamic allowed is more than 1.5V.RGB, Y , CVBS inputs : - bottom sync top clamp -that means that the DC level is measured at the lowest value of the input signal and set to an internal reference (close to 2V). The dynamic al-lowed is more than 1.5V.4704.7F

STV6410A

L/R Audio

Audio Out

6410A -18.E P S

Figure 15 : Audio Outputs

220100nF

75Video In

STV6410A

Y/C/CVBS/RGB

6410A -19.E P S Figure 16 : Video Inputs

2.b - Outputs

On these devices the video outputs are NOT ABLE to drive 150?. That means that external buffers (one simple NPN-Transistor per output) are needed. T o reduce the external components, the output DC level have been chosen to allow a direct drive of the base of the output follower (NPN). The emitters of the NPNs will be polarized to ground via 1k ? resis-tors (more or less) and will drive the outputs through some 75? resistors. Do not forget to bufferize your favourite UHF modulator video input...

Chrominance outputs have a DC of 2.3V (it is an average value) and Luminance type output have a DC of 1.3V (it is a bottom value).

(4.7k )1k 75STV6410A

Video Out

Video

6410A -20.E P S

Figure 17 : Video (and Fast Blanking) Outputs

STV6410A

20/22