92hd81 Integrated Device Technology, 92hd81 Datasheet
92hd81
Manufacturer Part Number
92hd81
Description
Single Chip Pc Audio System
Manufacturer
Integrated Device Technology
Datasheet
1.92HD81.pdf
(294 pages)
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SINGLE CHIP PC AUDIO SYSTEM
CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
Description
The 92HD81 single-chip audio system is a low power
optimized, high fidelity, 4-channel audio codec with
integrated speaker amplifier, capless headphone amplifier,
and low drop out voltage regulator. The high integration of
the 92HD81 enables the smallest PCB footprint with the
lowest system BOM count and cost. The 92HD81 provides
high quality HD Audio capability to notebook and business
desktop PC applications.
Features
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Block Diagram
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
4 Channels (2 stereo DACs and 2 stereo ADCs) with
24-bit resolution
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2W/channel stereo speaker amplifier @ 4 ohms and
4.75V
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Two headphone amplifiers
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Internal core voltage regulator
•
+3.3 V, +4.75 V & +5 V analog power supply options
Supports full-duplex stereo audio and simultaneous VoIP
Provides a mono output
1W/ch at 4 ohms and 3.3V
One capless and one non-capless retaskable
1.5V to 1.8V or 3.3V digital power supply options
DUAL SPDIF
1
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X
Full ECR15B low power support
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Microsoft WLP 3/4/5 premium logo compliant, as
defined in WLP 3.9
Dual SPDIF for WLP compliant support of
simultaneous HDMI and SPDIF output
Support for 1.5V and 3.3V HDA signaling
Two digital microphone inputs (mono, stereo, or
quad microphones)
High performance analog mixer
2 adjustable VREF Out pins for analog microphone
bias
6 analog ports with port presence detect (5 single
ended, 1 BTL)
Analog and digital PC Beep support
Aux Audio Mode
48-pad QFN RoHS packages
Audio inactivity transitions codec from D0 to D3 low
power mode
Resume from D3 to D0 with audio activity in < 10 msec
D3 to D0 transition with < -65dB pop/click
Port presence detect in D3 with or without bit clock
Optional analog PC beep in D3
Additional vendor specific modes for even lower power
92HD81
(see orderable part numbers for support)
Port A (HP)
Port C
Port E
SPDIF Out 1
Port F
SPDIF Out 0
Port B (cap-less HP/LO)
Port D (BTL)
DATASHEET
92HD81
V 0.97 01/09
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