IDTSTAC9753AXNAED1XR
IDTSTAC9753AXNAED1XR Datasheet
IDT's STAC9752A/9753A are general purpose 20-bit, full duplex, audio CODECs conforming to the analog component specification of AC'97 Audio CODEC 97 Component Specification Rev. The STAC9752A/9753A incorporates IDT's proprietary technology.
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IDTSTAC9753AXNAED1XR |
IDTSTAC9753AXNAED1XR (pdf) |
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| DATASHEET AC’97 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK Circuit • Headphone Drive Capability 50 mW per channel • Switchable Headphone Out pins 39/41 or 35/36 • 0dB, 10dB, 20dB and 30dB Microphone Boost Capability • V STAC9753A and +5 V STAC9752A Analog Power Supply Options • Pin Compatible with STAC9750/52/66 KEY SPECIFICATIONS • Analog LINE_OUT SNR 94dB • Digital DAC SNR 92dB • Digital ADC SNR 85dB • Full-scale Total Harmonic Distortion • Crosstalk Between Input Channels -70dB • Spurious Tone Rejection 100dB • Stereo Microphone Input RELATED MATERIALS • Data Sheet STAC9752A/9753A • Reference Designs The AC’97 CODEC is designed to achieve a DAC SNR in excess of 94dB. 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 STAC9752A/9753A includes digital input/output capability for support of modern PC systems, with an output that supports the SPDIF format. The STAC9752A/9753A is a standard 2-channel stereo CODEC. With IDT’s headphone drive capability, headphones can be driven with without an external amplifier. The STAC9752A/9753A 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 STAC9752A/9753A can be placed on a motherboard, daughter boards, PCI, AMR, CNR, MDC or ACR cards. The STAC9752A/9753A provides variable sample rate Digital-to-Analog DA and Analog-to-Digital AD conversion, mixing, and analog processing. Supported audio sample rates include 48KHz, 44.1KHz, 32KHz, 22.05KHz, 16KHz, 11.025KHz, and 8 KHz additional rates are supported in the STAC9752A/9753A soft audio drivers. All ADCs and DACs operate at 20-bit resolu- AC’97 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK STAC9752A/9753A V 1206 STAC9752A/9753A AC’97 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK PC AUDIO TABLE OF CONTENTS PRODUCT BRIEF 6 Features 6 Description 6 STAC9752A/9753A Block Diagram 8 Key Specifications 9 Related Materials 9 Additional Support 9 CHARACTERISTICS AND SPECIFICATIONS Electrical Specifications 10 AC Timing Characteristics 16 TYPICAL CONNECTION AND POWER DIAGRAMS STAC9752A/9753A Typical Connection Diagram for 48-pin LQFP 21 STAC9752A/9753A Typical Connection Diagram for 32-pad QFN 22 Split Independent Power Supply Operation 23 Split Independent Power Supply Operation for the 32-pad QFP Package CONTROLLER, CODEC, AND AC-LINK AC-Link Physical interface 25 Controller to Single CODEC 25 Controller to Multiple CODECs 26 Clocking for Multiple CODEC Implementations 27 STAC9752A/9753A as a Primary CODEC 28 AC-Link Power Management 28 AC-LINK DIGITAL INTERFACE Overview 31 AC-Link Serial Interface Protocol 32 AC-Link Output Frame SDATA_OUT 35 AC-Link Input Frame SDATA_IN 38 AC-Link Interoperability Requirements and Recommendations 42 Slot Assignments for Audio 43 STAC9752A/9753A FUNCTIONAL BLOCKS STAC9752A/9753A Mixer Description 46 SPDIF Digital Mux PC Beep Implementation 48 PROGRAMMING REGISTERS Register Descriptions 51 General Purpose Input & Outputs 68 Extended CODEC Registers Page Structure Definition 72 STAC9752A/9753A Paging Registers 72 Vendor ID1 and ID2 Index 7Ch and 7Eh 84 LOW POWER MODES MULTIPLE CODEC SUPPORT Primary/Secondary CODEC Selection 87 Secondary CODEC Register Access Definitions 88 TESTABILITY ATE Test Mode 89 STAC9752A/9753A PIN DESCRIPTION Pin Description for the 48-pin LQFP Package 90 Pinout List 48-pin LQFP Package 91 Pin Description for the 32-pad QFN Package 92 Pinout List 32-pad QFN Package 93 STAC9752A/9753A Digital I/O 93 STAC9752A/9753A Analog I/O 94 AC’97 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK STAC9752A/9753A V 1206 STAC9752A/9753A AC’97 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK PC AUDIO AC’97 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK STAC9752A/9753A V 1206 STAC9752A/9753A AC’97 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK PC AUDIO LIST OF FIGURES Figure STAC9752A/9753A Block Diagram 8 Figure Cold Reset Timing 16 Figure Warm Reset Timing Figure Clocks Timing 17 Figure Data Setup and Hold Timing 18 Figure Signal Rise and Fall Times Timing 19 Figure AC-Link Low Power Mode Timing 19 Figure ATE Test Mode Timing 20 Figure STAC9752A/9753A Typical Connection Diagram 48-pin LQFP 21 Figure STAC9752A/9753A Typical Connection Diagram 32-pad QFN 22 Figure Split Connection Diagram 32-pad QFN 24 Figure AC-Link to its Companion Controller 25 Figure STAC9752A/9753A Powerdown Timing 29 Figure Bi-directional AC-Link Frame with Slot assignments 31 Figure AC-Link Audio Output Frame 35 Figure Start of an Audio Output Frame 35 Figure STAC9752A/9753A Audio Input Frame 38 Figure Start of an Audio Input Frame 39 Figure Bi-directional AC-Link Frame with Slot assignments Figure AC-Link Input Slots Dedicated To CODEC 44 Figure STAC9752A/9753A 2-Channel Mixer Functional Diagram 47 Figure Example of STAC9752A/9753A Powerdown/Powerup Flow 85 Figure Powerdown/Powerup Flow With Analog Still Alive 86 Figure Pin Description Drawing 90 Figure STAC9752A/9753A 32 pad QFN Pin Description Drawing 92 Figure Package Drawing - 48-pin LQFP 98 Figure Package Drawing - 32-pad QFN 99 Figure Recommended PCB Layout for 32-pad QFN Package 100 Figure Reflow Profile 101 AC’97 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK STAC9752A/9753A V 1206 STAC9752A/9753A AC’97 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK PC AUDIO LIST OF TABLES Table Clock mode configuration 17 Table Common Clocks and Sources 18 Table Recommended CODEC ID strapping 27 Table AC-Link Output Slots transmitted from the Controller 31 Table The AC-Link Input Slots transmitted from the CODEC Table VRA Behavior 33 Table Output Slot 0 Bit Definitions 36 Table Command Address Port Bit Assignments 37 Table Status Address Port Bit Assignments 40 Table Status Data Port Bit Assignments 41 Table Primary CODEC Addressing Slot 0 Tag Bits 42 Table Secondary CODEC Addressing Slot 0 tag bits 43 Table AC-Link Output Slots Dedicated To CODEC 43 Table AC-Link Output Slots Dedicated To Audio 44 Table AC-Link Input Slots Dedicated To Audio 44 Table Audio Interrupt Slot Definitions 45 Table Digital PC Beep Examples 49 Table Programming Registers 50 Table Extended Audio ID Register Functions 64 Table AMAP compliant 66 Table Hardware Supported Sample Rates 67 Table Supported Jack and Mic Sense Functions 75 Table Reg 68h Default Values 77 Table Gain or Attenuation Examples 77 Table Register 68h/Page 01h Bit Overview 77 Table Sensed Bits Outputs 79 Table Sensed Bits Inputs 79 Table Low Power Modes 85 Table CODEC ID Selection Table Secondary CODEC Register Access Slot 0 Bit Definitions Table Test Mode Activation Table ATE Test Mode Operation 89 Table STAC9752A/9753A 48 Pin LQFP Pin List 91 Table STAC9752A/9753A 32 Pad QFN Pin List 93 Table STAC9752A/9753A Digital Connection Signals 93 Table STAC9752A/9753A Analog Connection Signals 94 Table STAC9752A/9753A Filtering and Voltage References 95 Table STAC9752A/9753A Power and Ground Signals 96 Table STAC9752A/9753A No Connects 96 AC’97 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK STAC9752A/9753A V 1206 STAC9752A/9753A AC’97 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK PC AUDIO • • • • • • • • • • • • • • • • • • • • • • • • The STAC9752A/9753A include digital output capability for support of modern PC systems with an output that supports the SPDIF format. AC’97 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK STAC9752A/9753A V 1206 STAC9752A/9753A AC’97 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK PC AUDIO The STAC9752A/9753A are standard 2-channel stereo CODEC. With IDT’s headphone drive capability, headphones can be driven without an external amplifier. The STAC9752A/9753A 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 LQFP or in the 32-pad/pin QFN, the STAC9752A/9753A can be placed on motherboards, daughter boards, PCI, AMR, CNR, MDC or ACR cards. The STAC9752A/9753A block diagram is illustrated in Figure The STAC9752A/9753A provides variable sample rate Digital-to-Analog DA and Analog-to-Digital AD conversion, mixing, and analog processing. Supported audio sample rates include 48KHz, 44.1KHz, 32KHz, 22.05KHz, 16KHz, 11.025KHz, and 8KHz additional rates are supported in the STAC9752A/9753A soft audio drivers All ADC's and DAC's 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 mic only, or a mono mix of sources from the MIXER. The stereo, variable-sample-rate, 20-bit ADCs 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 in mono mode and the 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 STAC9752A/9753A includes full Stereo Microphone Pre-Amp support and can be used with the 10, 20 and 30dB Microphone Boost options. This integration allows for additional cost savings and options. The STAC9752A/9753A also includes IDT’s Universal Jacks functionality for jack interchangeability. The STAC9752A/9753A includes internal jack sensing using proprietary current- and impedance-sensing techniques. The impedance load on any of the inputs or outputs, including the Headphone and Line Outputs, can be detected. This enables jack sensing on the Headphone and Line_Out. The STAC9752A/9753A jack sense can detect the presence of devices on the Headphone and Line Outputs and on both Mic inputs. The STAC9752A/9753A implementation of jack sense uses the Extended Paging Registers defined by the AC'97 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 vol- AC’97 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK STAC9752A/9753A V 1206 STAC9752A/9753A AC’97 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK PC AUDIO ume sliders that are implemented in the system, thus improving the end-user's experience with the PC. ORDERING INFORMATION Ordering Information Part Number STAC9752AXTAEyyX STAC9753AXTAEyyX STAC9752AXNAEyyX STAC9753AXNAEyyX Package 48-pin RoHS QFP 7mm x 7mm x 1.4mm 48-pin RoHS QFP 7mm x 7mm x 1.4mm 32-pin RoHS QFN 5mm x 5mm x 0.9mm 32-pin RoHS QFN 5mm x 5mm x 0.9mm Temp Range 0° C to +70° C 0° C to +70° C 0° C to +70° C 0° C to +70° C Supply Range DVdd = 3.3V, AVdd = 5.0V DVdd = 3.3V, AVdd = 3.3V DVdd = 3.3V, AVdd = 5.0V DVdd = 3.3V, AVdd = 3.3V Add an “R” to thye end fo rtape and reel delivery. MOQ is 2Ku for 48pin QFP and 2.5ku for 32pin QFN. AC’97 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK STAC9752A/9753A V 1206 STAC9752A/9753A AC’97 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK PC AUDIO PACKAGE DRAWINGS AND PC BOARD LAYOUT INFORMATION 48-Pin LQFP 48 pin LQFP Pin 1 Figure Package Drawing - 48-pin LQFP Key A A1 LQFP Dimensions in mm Min. Nom. Max. AC’97 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK STAC9752A/9753A V 1206 STAC9752A/9753A AC’97 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK PC AUDIO 32-Pad QFN Figure Package Drawing - 32-pad QFN Key A A1 A3 b D D1 E E1 e L D2 E2 ZD ZE R QFN Dimensions in mm REF. AC’97 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK STAC9752A/9753A V 1206 STAC9752A/9753A AC’97 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK PC AUDIO PC Board Recommendations for 32-pad QFN Package Figure Recommended PCB Layout for 32-pad QFN Package SUGGESTED FOOTPRINT PAD DETAIL mm typical |
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