Hitachi 55HK6T64U Service Manual page 14

Features

Audio Input/Output
o 25 W Into an 8-Ω Load From a 20-V Supply
o Wide PVDD Range, From 8V to 26V
o Supports BTL Configuration with 4- Ω Load
o Efficient Class-D Operation Elminates Need for Heatsinks
o One serial Audio Input (Two Audio Channels)
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o I C Address Selection Pin (Chip Select)
o Single Output Filter PBTL Support
o Supports 441-kHz to 48-kHz Sample Rate (LJ/RJ/I

Audio/PWM Processing
o Indepent Channel Volume Control With Gain of 24 dB to Mute With 0.125-dB
Resolution Steps
o Programmable Two-Band Dynamic-Range Control
o 18 Programmable Biquads for Speaker EQ and Other Audio-Processing Features
o Programmable Coefficients for DRC Filters
o DC Blocking Filters

General Features
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o I C Serial Control Interface Operational Without MCLK
o Requires Only 3.3 V and PVDD
o No External Oscillator: Internal Oscillator for Automatic Rate Detection
o Surface-Mount, 48-Pin HTQFP Package
o Thermal and Short-Circuit Protection
o 106-dB SNR, A-Weighted
o AD,BD, and Ternary Modulation
o Up to 90% Efficient
o PWM Level Meter to Measure the Digital Power Profile

Benefits
o EQ: Speaker Equalization Improves Audio Performance
o Two-Band DRC: Dynamic Range Compression. Can Be Used As Power Limiter. Enables Speaker
Protection, Easy Listening, Night-Mode Listening
o Autodetect: Automatically Detects Sample-Rate Changes. No need for External Microprocessor
Intervention

Applications:
o LCD TV, LED TV, Soundbar
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