Notebook: STAC9766/67
Two-Channel, 20-Bit, AC'97 2.3 Codecs with Stereo Microphone and
Mic/Jack Sensing
For codec revision CC1 and beyond. This product is an upgrade from 9766CB2
SigmaTel's STAC9766/67 (Codec Revision CC1 and beyond) are general purpose 20-bit, full duplex, audio codecs conforming to the analog component specification of AC'97 (Audio Codec 97 Component Specification Rev. 2.3). The STAC9766/67 incorporates SigmaTel's proprietary sigma-delta technology The AC'97 codec is designed to achieve a DAC SNR in excess of 103dB. The DACs, ADCs, and mixer are integrated with analog I/Os, which include four analog line-level stereo inputs, two analog line-level mono inputs, two stereo outputs, and one mono output channel. The STAC9766/67 includes digital input/output capability for support of modern PC systems with an output that supports the SPDIF format. The STAC9766/67 is a standard 2-channel stereo codec. With SigmaTel's headphone drive capability, headphones can be driven with without an external amplifier.
The STAC9766/67 may be used as a secondary codec, with the STAC9700/21/56/08/84/50/52 as the primary, in a multiple codec configuration conforming to the AC'97 Rev. 2.3 specification. This configuration can provide true six-channel, AC-3 playback required for DVD applications. The STAC9766/67 communicates via the five-wire AC-Link to any digital component of AC'97 providing flexibility in the audio system design. Packaged in an AC'97 compliant 48-pin TQFP, the STAC9766/67 can be placed on the motherboard, daughter boards, PCI, AMR, CNR, MDC or ACR cards.
Features
- High performance sigma-delta technology
- AC'97 Rev 2.3 Complaint
- 20-bit full duplex stereo ADC & DACs
- Independent sample rates for ADC & DACs
- 5-Wire AC-Link protocol compliance
- 20-Bit SPDIF Output
- Full Stereo Microphone Pre-Amp
- Internal Jack Sensing on Headphone & Line_Out
- Internal Microphone Input Sensing
- Digital PC Beep Option
- Extended AC'97 2.3 Paging Registers
- Digital-ready status
- General purpose I/O
- Crystal Elimination Circuit
- Headphone drive capability (50mW)
- 0, 10db, 20db, and 30 dB microphone boost capability
- +3.3V (STAC9767) and +5V (STAC9766) analog power supply options
- Pin compatible with STAC9700/21/56
- 100% compatible with STAC9750/52
- SigmaTel Surround (SS3D) Stereo Enhancement
- Energy saving dynamic power modes
- Multi-Codec option (Intel AC'97 rev 2.3)
- Six analog line-level inputs
- 103dB SNR LINE-LINE
Block Diagram
Product Briefs
