Tempo Semiconductor 92HD87 Single-Chip PC Audio System CODEC
Tempo Semiconductor 92HD87 Single-Chip PC Audio System CODEC is a high fidelity, 4-channel audio codec compatible with the Intel High Definition (HD) Audio Interface. The 92HD87 codec provides high-quality HD Audio capability to notebooks and business desktops. The 92HD87 provides stereo 24-bit full-duplex resolution supporting sample rates up to 192kHz by the DAC and ADC. The Tempo Semiconductor 92HD87 supports a wide range of notebook and business desktop 4-channel configurations. An integrated BTL stereo amplifier is ideal for driving an integrated speaker in mobile, ultra-mobile, business, or desktop computers.
Features
- Four Channels (two stereo DACs and two stereo ADCs) with 24-bit resolution
- Supports full-duplex stereo audio and simultaneous VoIP
- 2W/channel stereo speaker amplifier @ 4Ω and 4.75V
- Two headphone amplifiers
- One capless and one non-capless retaskable
- Internal LDO for digital core supply
- +5V analog power supply option
- Dedicated BTL high pass filter for speaker protection (RA revision only)
- Full HDA015-B low power support
- Audio inactivity transitions codec from D0 to D3 low power mode
- Resume from D3 to D0 with audio activity in < 10msec
- 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
- Microsoft WLP premium logo compliant, as defined in WLP 3.9
- Support for 1.5V and 3.3V HDA signaling
- Digital microphone inputs (mono or stereo)
- Aux Audio Mode (see orderable part numbers for support)
- High-performance analog mixer
- Two adjustable VREF Out pins for analog microphone bias
- Five analog ports with port presence (detect + stereo speaker differential output)
- Analog and digital PC Beep support
- 40-pad QFN RoHS package
Published: 2014-07-03
| Updated: 2022-03-11