STV6412B 查看數據表（PDF） - STMicroelectronics

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STV6412B

Filtered Video Buffers for STB and DVD Devices

STMicroelectronics 

STV6412B

Audio/video switch matrix

Features

■ 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

– Switchable LPFs (low pass filters) on 6

inputs

– 6 dB gain on all CVBS/Y and C outputs

– Integrated 150 Ω buffers

– 1 Y/C adder

– 2 RGB/FB inputs, 1 tri-state RGB/FB output

with 6 dB adjustable gain (from +3 dB to

+9 dB)

– Video muting on all outputs

– 2 slow blanking inputs/outputs

– Sync bottom clamp on all CVBS/Y and

RGB inputs, average clamp on C inputs

– SVHS switch on C VCR output

– 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

LQFP64

(14 × 14 × 1.40 mm)

(Low-profile Quad Flat Pack)

Marking:

STV6412BD

Description

The STV6412B 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.

In an LQFP64 (14 × 14 × 1.4 mm) package, the

STV6412B is compatible with the STV6412A.

Table 1: Device summary

Order code

Packaging

STV6412BD

STV6412BDT

Tray

Tape and reel

July 2008

Rev 1

1/32

www.st.com

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