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STAC9711T Datasheet

  • STAC9711T

  • Multi-Channel AC97 Codec With Multi-Codec Option

  • 246.28KB

  • 56頁

  • ETC

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PRELIMINARY
SigmaTel, Inc.
Integrating Mixed-Signal Solutions
STAC9708/11
Multi-Channel AC'97 Codec
With Multi-Codec Option
GENERAL DESCRIPTION:
SigmaTel鈥檚
STAC9708/11
is a general purpose 18-bit, full duplex, audio codec that conforms to the analog
component specification of AC'97 (Audio Codec 97 Component Specification Rev. 2.1). The
STAC9708/11
incorporates
SigmaTel鈥檚
proprietary Sigma-Delta technology to achieve a DAC SNR in excess of 95dB. 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. Also included are two
additional high quality DACs, with independent volume control, for multi-channel applications. With
SigmaTel鈥檚
3D stereo enhancement (SS3D), independently selectable on both LINE OUT and DAC OUT, the
multi-channel mode immerses the user in a richer and livelier listening experience. The
STAC9708/11
may be
used as a secondary codec, with the
STAC9704/07
as the primary, in a multiple codec configuration conforming
to the AC'97 Rev. 2.1 specification. This configuration can provide true six-channel, AC-3 playback required for
DVD applications. The
STAC9708/11
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
STAC9708/11
can be placed on the motherboard, daughter boards, add-on cards or PCMCIA cards.
FEATURES:
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High performance
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technology
Two additional high quality DAC鈥檚
for multi-channel applications
18-bit full duplex stereo ADC, DACs
AC-Link protocol compliance
Multiple power supply options
Pin compatible with the STAC9704/07
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SigmaTel Surround
Enhancement
(SS3D)
Stereo
Energy saving power down modes
Multi-Codec option (Intel AC'97 rev 2.1)
Six analog line-level inputs
48-pin TQFP
SNR > 95 dB through Mixer and DAC
1
10/02/98

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