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Part: STV6412ADT
Category:
Description: Audio/video Switch Matrix
Company: ST Microelectronics, Inc.
Datasheet: Download STV6412ADT datasheet File size : 212 kB
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STV6412A
AUDIO/VIDEO SWITCH MATRIX
FEATURES
s s s
s
I²C Bus Control Standby Mode with Interrupt Signal Output Video Section 4 CVBS Inputs, 3 CVBS Outputs (one with Selectable Chroma Trap Filter) 3 Y/C Inputs, 2 Y/C Outputs 6 dB Gain on all CVBS/Y and C Outputs Integrated 150 Buffers 1 Y/C Adder 2 RGB/FB Inputs, 1 Tri-state RGB/FB Output with 6 dB Adjustable Gain (from +3dB to +9dB ) Video Muting on all Outputs 2 Slow Blanking Inputs/Outputs Sync Bottom Clamp on all CVBS/Yand RGB Inputs, Average Clamp on C Inputs Bandwidth: 15 MHz Crosstalk: 50 dB Minimum Audio Section 4 Stereo Inputs, 3 Stereo Outputs 1 Mono-Sound Output Stereo-to-Mono Sound Capability 0/6/9 dB Selectable Gain on one Stereo Input Full Range Volume Control with Soft Control Audio Muting on all Outputs
TQFP64 (14 x 14 x 1.40 mm) (Thin Full Plastic Quad Flat Pack) ORDER CODE: STV6412ADT
DESCRIPTION
The STV6412A is a highly integrated I²C bus-controlled 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 two SCART set-top box design.
September 2003
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Table of Contents
1 GENERAL OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.1 PIN CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 ELECTRICAL CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.1 ABSOLUTE MAXIMUM RATINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.1.1 Thermal Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.1.2 Latch Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.2 RECOMMENDED OPERATING CONDITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.3 AUDIO SECTION CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.4 VIDEO SECTION CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.5 CHROMA SECTION CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.6 BLANKING SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.7 I²C BUS CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3 I C BUS SELECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.1 I2C BUS ADDRESSES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.2 POW ER-ON RESET -- BUS REGISTER INITIAL CONDITIONS . . . . . . . . . . . . . . . . . . . 17 4 INPUT/OUTPUT GROUPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 5 APPLICATION DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 6 PACKAGE MECHANICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
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STV6412A
1 GENERAL OVERVIEW
1.1 PIN CONNECTIONS Figure 1. Pinout Diagram
Y /C V B S OU T _ V C R Y /C VB S O U T_ T V R/CO UT_ T V V ccB 3
COUT _ V CR
GO UT_ T V
V OU T_ RF
A OU T_ RF
B O U T_ T V
LO UT_ T V
F IL T E R
V ccB 1
V ccB 2
V ccB 4
V ccB 5
G NDB
F B OUT _ TV F B IN_V CR F B IN_E NC C_ GA TE VDD ADD SCL SDA GND IT _O UT S LB _ TV R/CIN_VCR S L B _V C R GIN_V CR V c c1 2 B IN _V C R
ROUT _ TV V c cao L OUT _V CR ROUT _ VCR L OUT _CINCH ROUT _ CINCH NC GNDA V c cA RIN_ TV L IN_T V C V B S IN _T V RIN_ VCR L IN_V CR Y /C V B SIN_ V CR GND
V cc
CVBS IN_ AUX
DECV
Y /C V B S IN _E N C
GND
Y IN _ E N C
RIN_AUX
CIN_ENC
LIN_ AUX
R/CIN_ ENC
RIN_ENC
GIN_E NC
LIN_ ENC
B IN _ E N C
NC
DECA
Figure 2. Pin Description
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Symbol VCC CVBSIN_AUX DECV Y/CVBSIN_ENC GND YIN_ENC RIN_AUX CIN_ENC LIN_AUX R/CIN_ENC RIN_ENC GIN_ENC LIN_ENC BIN_ENC NC DECA GND Y/CVBSIN_VCR LIN_VCR Description +5 V Supply CVBS Input from Auxiliary Video Decoupling Capacitor Y/CVBS Input from Encoder Ground Y Input from Encoder Audio Right Input from Auxiliary Chroma Input from Encoder Audio Left, Input from Auxiliary Red/Chroma Input from Encoder Audio Right, Input from Encoder Green Input from Encoder Audio Left, Input from Encoder Blue Input from Encoder Not Connected Audio Decoupling Capacitor Ground Y/CVBS Input from VCR SCART Audio Left, Input from VCR SCART
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