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STAC9752/53 20-BIT STAC9700/21/56/08/84/50/66 STAC9753 STAC9752 STAC9700/21/56 - Datasheet Archive
STAC9752/53 TWO-CHANNEL, 20-BIT, AC '97 2.3 CODECS WITH MICROPHONE AND JACK SENSING FEATURES DESCRIPTION High performance
PRODUCT BRIEF STAC9752/53 STAC9752/53 TWO-CHANNEL, 20-BIT 20-BIT, AC '97 2.3 CODECS WITH MICROPHONE AND JACK SENSING FEATURES DESCRIPTION High performance technology IDT's STAC9752/53 STAC9752/53 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 STAC9752/53 STAC9752/53 incorporates IDT's proprietary technology The AC'97 CODEC is designed to achieve a DAC SNR in excess of 90dB. The DACs, ADCs, and mixer are integrated with analog I/Os, which include four analog line-level stereo inputs, two analog linelevel mono inputs, two stereo outputs, and one mono output channel. The STAC9752/53 STAC9752/53 includes digital input/output capability for support of modern PC systems with an output that supports the SPDIF format. The STAC9752/53 STAC9752/53 is a standard 2-channel stereo CODEC. With IDT's headphone drive capability, headphones can be driven with without an external amplifier. 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 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 The STAC9752/53 STAC9752/53 may be used as a secondary CODEC, with the STAC9700/21/56/08/84/50/66 STAC9700/21/56/08/84/50/66 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 STAC9752/53 STAC9752/53 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 48pin TQFP, the STAC9752/53 STAC9752/53 can be placed on the motherboard, daughter boards, PCI, AMR, CNR, MDC or ACR cards. Crystal Elimination Circuit Headphone drive capability (50mW) 0, 10db, 20db, and 30 dB microphone boost capability +3.3 V (STAC9753 STAC9753) and +5 V (STAC9752 STAC9752) analog power supply options Pin compatible with STAC9700/21/56 STAC9700/21/56 100% compatible with STAC9750/66 STAC9750/66 IDT Surround (SS3D) Stereo Enhancement The STAC9752/53 STAC9752/53 provides variable sample rate Digital-toAnalog (DA) and Analog-to-Digital (AD) conversion, mixing, and analog processing. Energy saving dynamic power modes Multi-CODEC option (Intel AC '97 rev 2.3) Six analog line-level inputs 90dB SNR LINE-LINE SNR > 89 dB through Mixer and DAC ORDERING INFORMATION Part Number Temp Range Supply Range STAC9752T STAC9752T 48-pin TQFP 7mm x 7mm x 1.4mm 0° C to +70° C DVdd = 3.3V, AVdd = 5.0V STAC9753T STAC9753T IDTTM Package 48-pin TQFP 7mm x 7mm x 1.4mm 0° C to +70° C DVdd = 3.3V, AVdd = 3.3V 1 TWO-CHANNEL, 20-BIT 20-BIT, AC '97 2.3 CODECS WITH MICROPHONE AND JACK SENSING STAC9752/53 STAC9752/53 REV B 100106 STAC9752/53 STAC9752/53 TWO-CHANNEL, 20-BIT 20-BIT, AC '97 2.3 CODECS WITH MICROPHONE AND JACK SENSING PC AUDIO DESCRIPTION (CONTINUED) Supported audio sample rates include 48 kHz, 44.1 kHz, 32 kHz, 22.05 kHz, 16 kHz, 11.025 kHz, and 8 kHz; additional rates are supported in the STAC9752/53 STAC9752/53 soft audio drivers. All ADCs and DACs operate at 20-bit resolution. Two 20-bit DACs convert the digital stereo PCM-out content to audio. The MIXER block combines the PCM_OUT with any analog sources to drive the LINE_OUT and HP_OUT outputs. The MONO_OUT delivers either microphone only or a mono mix of sources from the MIXER. The stereo, variable-sample-rate, 20-bit ADC's provide record capability for any mix of mono or stereo sources, and deliver a digital stereo PCM-in signal back to the AC-Link. The microphone input and mono mix input can be recorded simultaneously, thus allowing for an all digital output in support of the digital ready initiative. For a digital ready record path, the microphone is connected to the left channel ADC while the mono output of the stereo mixer is connected to right channel ADC. The STAC9752/53 STAC9752/53 includes jack sensing on the Headphone and Line_Out. The STAC9752/53 STAC9752/53 jack sense can detect the presence of devices on the Headphone and Line Outputs and on both Microphone inputs. With proprietary IDT current and impedance-sensing techniques, the impedance load on the Headphone and Line Outputs can also be detected. The GPIOs on the STAC9752/53 STAC9752/53 remain available for advanced configurations unlike previous jack sense implementations. The STAC9752/53 STAC9752/53 implementation of jack sense uses the Extended Paging Registers defined by the AC '97 2.3 Specification. This allows for additional registry space to hold the identification information about the CODEC, the jack sensing details and results, and the external surroundings of the CODEC. The information within the Extended Paging Registers will allow for the automatic configuration of the audio subsystem without end-user intervention. For example, the BIOS can populate the Extended Paging Registers with valuable information for both the audio driver and the operating system such as gain and attenuation stages, input population and input phase. With this input information, the IDT driver will automatically provide to the Volume Control Panel only the volume sliders that are implemented in the system, thus improving the end-user's experience with the PC. The information in the Extended Paging Registers will also allow for automatic configuration of microphone inputs, the ability to switch between SPDIF and analog outputs, the routing of the master volume slider to the proper physical output, and SoftEQ configurations. The fully parametric IDT SoftEQ can be initiated upon jack insertion and sensed impedance levels. The STAC9752/53 STAC9752/53 also offers two styles of PC BEEP; Analog and Digital. The digital PC Beep is a new feature added to the AC '97 Specification Rev 2.3. The STAC9752/53 STAC9752/53 is designed primarily to support stereo (2-speaker) audio. True AC-3 playback can be achieved for 6-speaker applications by taking advantage of the multi-CODEC option available in the STAC9752/53 STAC9752/53 to support two or three CODECs in an AC '97 architecture. Additionally, the STAC9752/53 STAC9752/53 provides for a stereo enhancement feature, IDT Surround 3D (SS3D). SS3D provides the listener with several options for improved speaker separation beyond the normal 2 or 4-speaker arrangements. The STAC9752/53 STAC9752/53 can be SoundBlaster® and Windows Sound System® compatible with IDT's WDM driver for Windows 98/2K/ME/XP 98/2K/ME/XP. SoundBlaster is a registered trademark of Creative Labs. Windows is a registered trademark of Microsoft Corporation. IDTTM 2 TWO-CHANNEL, 20-BIT 20-BIT, AC '97 2.3 CODECS WITH MICROPHONE AND JACK SENSING STAC9752/53 STAC9752/53 REV B 100106 STAC9752/53 STAC9752/53 TWO-CHANNEL, 20-BIT 20-BIT, AC '97 2.3 CODECS WITH MICROPHONE AND JACK SENSING 4 stereo sources Power Management PC AUDIO 2 mono sources Stereo Mono PCM out DACs AC-link SYNC BIT_CLK SDATA_OUT SDATA_IN RESET# Multi-Codec DAC Digital Interface DAC Registers 64x16 bits HP_OUT ADC CID0 CID1 MIXER Analog mixing and Gain Control LINE_OUT MONO_OUT ADC Mic Boost 0,10,20 or 30 dB PCM in ADCs M MIC1 U X MIC2 Variable Sample Rate 20-Bit DACs and 20-Bit ADCs SPDIF Figure 1. STAC9752/53 STAC9752/53 BLOCK DIAGRAM KEY SPECIFICATIONS Analog LINE_OUT SNR: 90 dB Digital DAC SNR: 89 dB Digital ADC SNR: 85 dB Full-scale Total Harmonic Distortion: 0.02% Crosstalk between Input Channels: -70 dB Spurious Tone Rejection: 100 dB RELATED MATERIALS (AVAILABLE SOON) Data Sheet Reference Designs IDTTM 3 TWO-CHANNEL, 20-BIT 20-BIT, AC '97 2.3 CODECS WITH MICROPHONE AND JACK SENSING STAC9752/53 STAC9752/53 REV B 100106 STAC9752/53 STAC9752/53 TWO-CHANNEL, 20-BIT 20-BIT, AC '97 2.3 CODECS WITH MICROPHONE AND JACK SENSING PC AUDIO STAC9752/53 STAC9752/53 MIXER KEY MonoAnalog 2Ah:D5-D4 Slot Select 28h: D5-D4 PCM to SPDIF MUX PCMOut StereoAnalog 6Ah:D1 Slot Select Digital SPDIF 18h DAC vol 0Ah PC_BEEP 0Ch Phone 04h 0Eh vol mute 10, 20 or 30 dB MIC1 MIC2 vol mute 10h LINEIN 12h CD vol 16h mute vol AUX 14h mute vol mute vol mute 3D HP_OUT 02h 20h:D15 Master Volume -6dB 3D LINE_OUT 06h MUX 6Eh:D12 AllAnalog vs AllRecord Mono Volume MONO_OUT 1Ah 20h:D9 -6dB 1Ch MUX VIDEO Digital PCBeep MUX mute Headphone Volume MUX vol 0Eh:D6 & 6E:D2 20h:D8 Analog Audio Sources mute Record Volume 3D 38h:D5-D4 Slot Select ADC PCMIn ADCRecord Ganged3DControl 20h:D13 22h:D2-D3 Figure 2. STAC9752 STAC9752 2-Channel Mixer Functional Diagram KEY MonoAnalog 2Ah:D5-D4 StereoAnalog Slot Select 6Ah:D1 PCM to SPDIF 28h: D5-D4 MUX PCMOut Slot Select Digital SPDIF 18h vol DAC 0Ah PC_BEEP 0Ch Phone 0Eh:D6 & 6E:D2 0Eh 10, 20 or -6dB 30 dB 10h LINEIN CD 12h -6dB 16h AUX 14h -6dB -6dB -6dB -6dB mute vol mute vol mute vol mute vol mute HP_OUT 20h:D15 Master Volume -6dB 3D LINE_OUT 06h mute vol 3D 02h mute vol Digital PCBeep MUX 6Eh:D12 AllAnalog vs AllRecord Mono Volume MONO_OUT 1Ah -6dB MUX VIDEO vol MUX Analog Audio Sources 04h Headphone Volume MUX 20h:D8 MIC1 MIC2 mute -6dB 20h:D9 1Ch 3D Record Volume 38h:D5-D4 +6dB ADC Slot Select PCMIn ADCRecord Ganged3DControl 20h:D13 22h:D2-D3 Figure 3. STAC9753 STAC9753 2-Channel Mixer Functional Diagram IDTTM 4 TWO-CHANNEL, 20-BIT 20-BIT, AC '97 2.3 CODECS WITH MICROPHONE AND JACK SENSING STAC9752/53 STAC9752/53 REV B 100106 STAC9752/53 STAC9752/53 TWO-CHANNEL, 20-BIT 20-BIT, AC '97 2.3 CODECS WITH MICROPHONE AND JACK SENSING PC AUDIO 36 35 34 33 32 31 30 29 28 27 26 25 LINE_OUT_R LINE_OUT_L NC NC CAP2 NC AFILT2 AFILT1 VREFout VREF AVss1 AVdd1 PIN DESCRIPTION 37 38 39 40 41 42 43 44 45 46 47 48 48-Pin TQFP 24 23 22 21 20 19 18 17 16 15 14 13 LINE_IN_R LINE_IN_L MIC2 MIC1 CD_R CD_GND CD_L VIDEO_R VIDEO_L AUX_R AUX_L PHONE DVdd1 1 XTL_IN 2 XTL_OUT 3 DVss1 4 SDATA_OUT 5 BIT_CLK 6 DVss2 7 SDATA_IN 8 DVdd2 9 SYNC 10 RESET# 11 PC_BEEP 12 MONO_OUT AVdd2 HP_OUT_L HP_COMM HP_OUT_R AVss2 GPIO0 GPIO1 CID0 CID1 EAPD SPDIF Figure 4. STAC9752/53 STAC9752/53 Pin Description Drawing ADDITIONAL SUPPORT Additional product and company information can be obtained by going to the IDT website. IDTTM 5 TWO-CHANNEL, 20-BIT 20-BIT, AC '97 2.3 CODECS WITH MICROPHONE AND JACK SENSING STAC9752/53 STAC9752/53 REV B 100106 STAC9752/53 STAC9752/53 TWO-CHANNEL, 20-BIT 20-BIT, AC '97 2.3 CODECS WITH MICROPHONE AND JACK SENSING PC AUDIO Innovate with IDT audio for high fidelity. Contact: www.IDT.com For Sales For Tech Support 800-345-7015 408-284-8200 Fax: 408-284-2775 HA.CM@idt.com Corporate Headquarters Asia Pacific and Japan Europe Integrated Device Technology, Inc. 6024 Silver Creek Valley Road San Jose, CA 95138 United States 800 345 7015 +408 284 8200 (outside U.S.) Integrated Device Technology Singapore (1997) Pte. Ltd. Reg. No. 199707558G 199707558G 435 Orchard Road #20-03 Wisma Atria Singapore 238877 +65 6 887 5505 IDT Europe, Limited 321 Kingston Road Leatherhead, Surrey KT22 7TU England +44 1372 363 339 © 2006 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. 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