Hitachi 55293DLB, Service Manual

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7
Features
• Audio Input/Output
o
TAS5717 Supports 2×10 W and TAS5719 Supports 2×15 W Output
o
Wide PVDD Range, From 4.5 V to 26 V
o
Efficient Class-D Operation Eliminates Need for Heatsinks
o
Requires Only 3.3 V and PVDD
o
One Serial Audio Input (Two Audio Channels)
o
I2C Address Selection via PIN (Chip Select)
o
Supports 8-kHz to 48-kHz Sample Rate (LJ/RJ/I2S)
o
External Headphone-Amplifier Shutdown Signal
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Integrated CAP-Free Headphone Amplifier
o
Stereo Headphone (Stereo 2-V RMS Line Driver) Outputs
• Audio/PWM Processing
o
Independent Channel Volume Controls With 24-dB to Mute
o
Programmable Two-Band Dynamic Range Control
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14 Programmable Biquads for Speaker EQ
o
Programmable Coefficients for DRC Filters
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DC Blocking Filters
o
0.125-dB Fine Volume Support
• General Features
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Serial Control Interface Operational Without MCLK
o
Factory-Trimmed Internal Oscillator for Automatic Rate Detection
o
Surface Mount, 48-Pin, 7-mm × 7-mm HTQFP Package
o
AD, BD, and Ternary PWM-Mode Support
o
Thermal and Short-Circuit Protection
• Benefits
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EQ: Speaker Equalization Improves Audio Performance
o
DRC: Dynamic Range Compression. Can Be Used As Power Limiter. Enables Speaker Protection,
Easy Listening, Night-Mode Listening
o
DirectPath Technology: Eliminates Bulky DC Blocking Capacitors
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Stereo Headphone/Stereo Line Drivers: Adjust Gain via External Resistors, Dedicated Active
Headpone Mute Pin, High Signal-to-Noise Ratio
o
Two-Band DRC: Set Two Different Thresholds for Low- and High-Frequency Content