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STAC9721 PDF даташит

Спецификация STAC9721 изготовлена ​​​​«ETC» и имеет функцию, называемую «(STAC9721 / STAC9723) Stereo AC 97 Codec».

Детали детали

Номер произв STAC9721
Описание (STAC9721 / STAC9723) Stereo AC 97 Codec
Производители ETC
логотип ETC логотип 

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STAC9721 Даташит, Описание, Даташиты
www.DataSheet4U.com
SigmaTel, Inc.
Integrating Mixed-Signal Solutions
DATA SHEET
STAC9721/23
Stereo AC'97 Codec
With Multi-Codec Option
GENERAL DESCRIPTION:
SigmaTel’s STAC9721/23 is a general-purpose 18-bit stereo, full duplex, audio codec that conforms to
the analog component specification of AC'97 (Audio Codec 97 Component Specification Rev. 2.1). The
STAC9721/23 incorporates SigmaTel’s 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 SigmaTel’s 3D stereo enhancement (SS3D), and an extra true line-level out
for headphones or speaker amplifiers. The STAC9721/23 may be used as a secondary codec, with the
STAC9700/04/07/44/45 or a 4-channel STAC9708 as the primary, in multiple codec configurations
conforming to the AC'97 Rev. 2.1 specification. This configuration can provide up to six-channel output,
providing AC-3 playback for DVD applications. The STAC9721/23 communicates via the five-wire AC-
Link interface with any AC-Link capable controller or advanced core logic chip-set. Packaged in an
AC'97 compliant 48-pin TQFP, the STAC9721/23 can be placed on motherboards, daughter boards, add-
on cards or AMR/MDC cards.
FEATURES:
High performance Σ∆ technology
Energy saving power down modes
18-bit full duplex stereo ADC, DACs
AC-Link protocol compliance
3.3V Multiple power supply options
Pin compatible with the STAC9700/44/45
SigmaTel Surround (SS3D) Stereo Enhancement
EAPD – External Amplifier Power Down Control
Multi-Codec option (Intel AC'97 rev 2.1)
Six analog line-level inputs
48-pin TQFP
LINE-to-LINE SNR 102dB
The STAC9723 is tested at +3.3V
ORDERING INFORMATION:
PART
NUMBER
STAC9721T
STAC9723T
PACKAGE
48-pin TQFP 7mm x7mm x 1.4mm
48-pin TQFP 7mmx7mm x 1.4mm
TEMPERATURE
RANGE
0o C to +70o C
0o C to +70o C
SUPPLY RANGE
DVdd = 3.3V or 5V, AVdd = 5V
DVdd = 3.3V, AVdd = 3.3V
SigmaTel reserves the right to change specifications without notice
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STAC9721 Даташит, Описание, Даташиты
SigmaTel, Inc.
Data Sheet
STAC9721
Table of Contents
GENERAL DESCRIPTION:.........................1
TABLE OF CONTENTS................................2
TABLE OF CONTENTS – FIGURES ..........3
1. PIN/SIGNAL DESCRIPTIONS .............7
1.1 DIGITAL I/O
7
1.2 ANALOG I/O
8
1.3 FILTER/REFERENCES/GPIO
9
1.4 POWER AND GROUND SIGNALS 9
2. AC-LINK ................................................10
2.1 CLOCKING
10
2.2 RESET
10
3. DIGITAL INTERFACE........................11
3.1 AC-LINK SERIAL INTERFACE 11
3.2 AC-LINK LOW POWER MODE 18
4. STAC9721/23 MIXER ...........................19
4.1 MIXER INPUT
20
4.2 MIXER OUTPUT
20
4.3 PC BEEP IMPLEMENTATION 20
4.4 PROGRAMMING REGISTERS: 21
5. LOW POWER MODES ........................29
6. MULTIPLE CODEC SUPPORT .........31
6.1 PRIMARY/SECONDARY CODEC 31
6.2 SECONDARY CODEC ACCESS 32
7. TESTABILITY ......................................32
8. EXTENDED FUNCTIONALITY ........33
8.1 ANTI-POP CIRCUITRY
33
9. AC TIMING CHARACTERISTICS .33
9.1 COLD RESET
33
9.2 WARM RESET
34
9.3 CLOCKS
34
9.4 DATA SETUP AND HOLD
35
9.5 SIGNAL RISE AND FALL
35
04/07/00
9.6 AC-LINK LOW POWER MODE 36
9.7 ATE TEST MODE
37
10. ELECTRICAL SPECIFICATIONS: ...38
10.1 MAXIMUM RATINGS:
38
10.2 RECOMMENDED CONDITIONS 38
10.3 POWER CONSUMPTION
39
10.4 AC-LINK STATIC DIGITAL 41
10.5 STAC9721 ANALOG
41
10.6 STAC9723 ANALOG
43
APPENDIX A ................................................45
APPENDIX B ................................................46
TABLE of Tables
Table 1. Package Dimensions
4
Table 2. Pin Designation
4
Table 3. Digital Signal List
7
Table 4. Analog Signal List
8
Table 5. Filtering and Voltage References
9
Table 6. Mixer Functional Connections
20
Table 7. Programming Registers
21
Table 8. Play Master Volume Register
22
Table 9. PC_BEEP Register
22
Table 10. Analog Mixer Input Gain Register 23
Table 11. Record Select Control Registers
23
Table 12. Left Record Select Control Registers 23
Table 13. Record Gain Registers
24
Table 14. General Purpose Register
24
Table 15. 3D Control Registers Error! Bookmark
not defined.
Table 16. Powerdown Status Registers
25
Table 17. Extended Audio ID Functions
26
Table 19: Analog Current Adjust
27
Table 16. Multi-Channel Programming
28
Table 18. Low Power Modes
29
Table 19. Codec ID Selection
31
Table 20. Secondary Codec Register Access 32
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STAC9721 Даташит, Описание, Даташиты
SigmaTel, Inc.
Data Sheet
STAC9721
Table 21. Cold Reset
33
Table 22. Warm Reset
34
Table 23. Clocks
34
Table 24. Data Setup and Hold
35
Table 25. Signal Rise and Fall Times
35
Table 26. AC-Link Low Power Mode Timing 36
Table 27. ATE Test Mode
37
Table 28. Operating Conditions
38
Table 33: Power Consumption 39
Table 34: Power Consumption at 3.3V Analog 39
Table 35: Reduced Analog Power Settings
40
Table 30. AC-Link Static Specifications
41
Table 31. Analog Performance Characteristics 41
Table 32. Analog Performance Characteristics 43
Table of Contents – Figures
Figure 1. Package Outline ..................................... 4
Figure 2. STAC9721/23 Block Diagram............... 5
Figure 3. AC-Link to its companion controller .. 10
Figure 4. Bi-directional Audio Frame ................. 12
Figure 5. AC-Link Audio Output Frame .......... 12
Figure 6. Start of an Audio Output Frame ....... 13
Figure 7. STAC9721/23 Audio Input Frame ..... 16
Figure 8. Start of an Audio Input Frame ........... 16
Figure 9. STAC9721/23 Powerdown Timing ..... 18
Figure 10. STAC9721/23 Mixer ......................... 19
Figure 11. Powerdown/Powerup flow.................. 29
Figure 12. Powerdown/Powerup flow ................. 30
Figure 13. Cold Reset........................................... 33
Figure 14. Warm Reset ........................................ 34
Figure 15. Clocks.................................................. 34
Figure 16. Data Setup and Hold.......................... 35
Figure 17. Signal Rise and Fall Times ................ 35
Figure 18. AC-Link Low Power Mode Timing.. 36
Figure 19. ATE Test Mode .................................. 37
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04/07/00










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Номер в каталогеОписаниеПроизводители
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