,QWHJUDWLQJ 0L[HG6LJQDO 6ROXWLRQV Channel AC'97 Codecs with Headphone

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STAC9766/67
,QWHJUDWLQJ 0L[HG6LJQDO 6ROXWLRQV Channel AC'97 Codecs with Headphone Drive SPDIF Output
Stereo AC'97 codecs with headphone drive SPDIF outputs.
DESCRIPTION
SigmaTel's STAC9766/67 general purpose 18-bit ADCs 20-bit DACs, full duplex, audio codecs conforming analog component specification AC'97 (Audio Codec Component Specification Rev. 2.2). STAC9766/67 incorporate SigmaTel's proprietary technology achieve excess DACs, ADCs, mixer integrated with analog I/Os, which include four analog line-level stereo inputs, analog line-level mono inputs, stereo outputs, mono output channel. STAC9766/67 include digital input/output capability support modern systems with output that supports SPDIF format. STAC9766/67 standard 2-channel stereo codec. With SigmaTel's headphone drive capability, headphones driven with external amplifier. STAC9766/67 used secondary codec, with STAC9700/21/44/56/ 08/84 primary, multiple codec configuration conforming AC'97 Rev. specification. This configuration provide true sixchannel, AC-3 playback required applications. STAC9766/67 communicates five-wire AC-Link digital component AC'97 providing flexibility audio system design. Packaged AC'97 compliant 48-pin TQFP, STAC9766/67 placed motherboard, daughter boards, PCI, AMR, CNR, cards.
FEATURES Full duplex stereo 18-bit ADCs 20-bit
DACs
AC'97 2.2-compliant High performance technology SPDIF output Crystal elimination circuit Headphone amplifier Independent sample rates DACs (hardware SRCs) microphone boost capability LINE-LINE 5-Wire AC-Link protocol compliance Digital-Ready architecture General purpose +3.3V (STAC9767) (STAC9766) analog power supply options
compatible with STAC9700/21/44 SigmaTel Surround (SS3D) Stereo
Enhancement
Energy saving dynamic power modes
ORDERING INFORMATION
Part Number STAC9766T STAC9767T Package 48-pin TQFP 1.4mm 48-pin TQFP 1.4mm Temp Range +70° +70° Supply Range DVdd 3.3V, AVdd 5.0V DVdd 3.3V, AVdd 3.3V
2-9766-P1-3.0-0501
STAC9766/67
Channel AC'97 Codecs with Headphone Drive SPDIF Output
DESCRIPTION (CONTINUED)
STAC9766/67 block diagram illustrated page provides variable sample rate Digital-to-Analog (DA) Analog-to-Digital (AD) conversion, mixing, analog processing. Supported audio sample rates include kHz, 44.1 kHz, kHz, 22.05 kHz, kHz, 11.025 kHz, kHz; additional rates supported STAC9766/67 soft audio drivers. digital interface communicates with AC'97 controller five-wire AC-Link contains 64-word 16-bit registers. DACs convert digital stereo PCM-out content audio. MIXER block combines PCM_OUT with analog sources, drive LINE_OUT HP_OUT outputs. MONO_OUT delivers either only, mono sources from MIXER. stereo variable sample rate ADC's provide record capability mono stereo sources, deliver digital stereo PCM-in signal back AC-Link. microphone input mono input recorded simultaneously, thus allowing digital output support digital ready initiative. ADC's operate 18-bit resolution DAC's 20-bit resolution. digital ready record path, microphone connected left channel while mono output stereo mixer connected right channel ADC. Make sure microphone input connected stereo mixer when this mode. STAC9766/67 supports General Purpose Input/Output (GPIO), well SPDIF output. These digital options provide number advance architectural implementations, with volume controls digital mixing capabilities built directly into codec. STAC9766/67 designed primarily support stereo (2-speaker) audio. True AC-3 playback achieved 6-speaker applications taking advantage multi-codec option available STAC9766/67 support multiple codecs AC'97 architecture. Additionally, STAC9766/67 provides stereo enhancement feature, SigmaTel Surround (SS3D). SS3D provides listener with several options improved speaker separation beyond normal 2/4speaker arrangements. Together with logic component (controller advanced core logic chip-set) AC'97, STAC9766/67 SoundBlaster® Windows Sound System® compatible with SigmaTel's driver 98/2K/ME/XP. SoundBlaster registered trademark Creative Labs. Windows registered trademark Microsoft Corporation.
Copyright 2001 SigmaTel, Inc. rights reserved. contents this document protected copyright reproduced without express written consent SigmaTel, Inc. SigmaTel, SigmaTel logo, combinations thereof trademarks SigmaTel, Inc. Other product names used this publication identification purposes only trademarks registered trademarks their respective companies. contents this document provided connection with SigmaTel, Inc. products. SigmaTel, Inc. made best efforts ensure that information contained herein accurate reliable. However, SigmaTel, Inc. makes warranties, express implied, accuracy completeness contents this publication providing this publication IS". SigmaTel, Inc. reserves right make changes specifications product descriptions time without notice, discontinue make changes products time without notice. SigmaTel, Inc. does assume liability arising application product circuit, specifically disclaims liability, including without limitation special, consequential, incidential damages.
2-9766-P1-3.0-0501
STAC9766/67
Channel AC'97 Codecs with Headphone Drive SPDIF Output
STAC9766/67 BLOCK DIAGRAM
stereo sources mono sources Stereo Mono HP_OUT
Power Management
DACs
AC-link
SYNC BIT_CLK SDATA_OUT SDATA_IN RESET#
Digital Interface
Registers 64x16 bits
MIXER
ADCs Analog mixing Gain Control
LINE_OUT MONO_OUT
Multi-Codec
CID0 CID1
Boost 0,20
MIC1 MIC2
Variable Sample Rate 18-Bit DACs ADCs
SPDIF
SPECIFICATIONS Analog LINE_OUT SNR: Digital SNR: Digital SNR: Full-scale Total Harmonic Distortion: 0.002% Crosstalk between Input Channels: Spurious Tone Rejection: RELATED MATERIALS Data Sheet Reference Designs CNR, applications Audio Precision Performance Plots
2-9766-P1-3.0-0501
STAC9766/67
Channel AC'97 Codecs with Headphone Drive SPDIF Output
STAC9766/67 MIXER
MonoAnalog
2Ah:D5-D4
74h:D1-D0
Slot Select
6Ah:D0-D1
6Ah:D12
StereoAnalog SPDIF Digital
PCMOut
Slot Select
SPDIF
20h:D15 "POP BYPASS"
PC_BEEP Phone
20h:D8 0Eh:D6
mute
mute mute
8Eh:D13
Headphone Volume
HP_OUT
Analog Audio Sources
MIC1 MIC2 LINEIN VIDEO
6E:D2
mute mute mute mute mute
AllAnalog AllRecord -6dB
20h:D15
-6dB
Master Volume
LINE_OUT
6Eh:D12
20h:D9
Mono Volume
MONO_OUT
Record Volume
Slot Select
PCMIn
ADCRecord Ganged3DControl 20h:D13 22h:D2-D3
Figure STAC9766 2-Channel Mixer Functional Diagram
MonoAnalog
2Ah:D5-D4
74h:D1-D0
Slot Select
6Ah:D0-D1
6Ah:D12
StereoAnalog
SPDIF
PCMOut
Slot Select
SPDIF
Digital
20h:D15 "POP BYPASS"
PC_BEEP Phone
20h:D8 0Eh:D6
-6dB
mute
mute
8Eh:D13
Headphone Volume
HP_OUT
mute
Analog Audio Sources
MIC1 MIC2
-6dB
6E:D2
mute
AllAnalog AllRecord -6dB
20h:D15
-6dB
Master Volume
LINE_OUT
LINEIN VIDEO
-6dB
mute
6Eh:D12
mute
Mono Volume
MONO_OUT
mute
-6dB
-6dB
mute
20h:D9
-6dB -6dB
Record Volume
+6dB
Slot Select
PCMIn
ADCRecord
Ganged3DControl 20h:D13 22h:D2-D3
Figure STAC9767 2-Channel Mixer Functional Diagram
2-9766-P1-3.0-0501
STAC9766/67
Channel AC'97 Codecs with Headphone Drive SPDIF Output
DESCRIPTION
MONO_OUT AVdd2 HP_OUT_L HP_COMM HP_OUT_R AVss2 GPIO0 GPIO1 CID0 CID1 EAPD SPDIF
LINE_OUT_R LINE_OUT_L CAP2 AFILT2 AFILT1 VREFout VREF AVss1 AVdd1
48-Pin TQFP
LINE_IN_R LINE_IN_L MIC2 MIC1 CD_R CD_GND CD_L VIDEO_R VIDEO_L AUX_R AUX_L PHONE
Figure STAC9766/67 Description Drawing
ADDITIONAL SUPPORT
Additional product company information obtained going SigmaTel website www.sigmatel.com
2-9766-P1-3.0-0501
DVdd1 XTL_IN XTL_OUT DVss1 SDATA_OUT BIT_CLK DVss2 SDATA_IN DVdd2 SYNC RESET# PC_BEEP

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