HD Audio SoundMAX Codec
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HD Audio SoundMAX® Codec AD1981HD
FEATURES
2 DAC channels: 16-, 20-, or 24-bit 2 ADC channels: 16- ...
Description
www.DataSheet4U.com
HD Audio SoundMAX® Codec AD1981HD
FEATURES
2 DAC channels: 16-, 20-, or 24-bit 2 ADC channels: 16- or 20-bit HD audio sample rates 8 kHz, 11.025 kHz, 16 kHz, 22.05 kHz, 32 kHz, 44.1 kHz, 48 kHz Greater than 90 dB dynamic range S/PDIF output: 32 kHz, 44.1 kHz or 48 kHz, 16- or 24-bit Digital beep and analog PC beep pass-through Integrated headphone amplifiers on two ports Port retasking Selectable microphone and line inputs Full analog mixer Legacy inputs: CD and auxiliary inputs External amplifier power-down (EAPD) 48-pin, Pb-free LQFP
ENHANCED FEATURES
No AFILT pins, results in BOM savings 5.0 V AVDD supply, 3.3 V DVDD supply Jack-sensing autoconfiguration options Mute line output and monaural output (MONO_OUT) when headphones are used Mute MONO_OUT when a device is in the line out jack Selectable trip level: high/low supports all jack types Peripheral identification/enumeration Jack event/presence detection using SENSE or GPIO pins Microphone to MONO_OUT for speakerphone applications Advanced power management modes 4 software-controlled microphone bias pins Up to 30 dB microphone boost 4 GPIOs—external control or traditional jack sense
FUNCTIONAL BLOCK DIAGRAM
AVDD AVSS GPIO GPIO PC BEEP RESET 5V
JACK SENSE
SELECTOR
SENSE
Σ
SELECTOR
GAM
MONO_OUT
SELECTOR
PCM/AC3 S/PDIF TX
S/PDIF_OUT
GAM
HP
PORT-A HEADPHONE
EQ
PCM Σ-Δ DAC GA GA
SELECTOR
MIC BIAS
Z
MIC_BIAS-D
HD AUDIO INTERFACE
PC BEEP
PC BEEP
M
GAM
BOOST
HP
Z
SELECTOR
M
PORT-...
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