DATA SHEET
TWO-CHANNEL HD AUDIO CODEC WITH MODEM
& DUAL DIGITAL MICROPHONE INTERFACES
DESCRIPTION
The STAC9250/9251 are high fidelity, 2-channel audio CODECs
compliant with the High Definition Audio (HD Audio) specification
defined by Intel. The STAC9250/9251 enables a two-chip audio
and modem implementation by integrating the “System Side”
functionality of Silicon Labs’ modem solution. The STAC9250/
9251 provides a direct interface to Silicon Labs’ “Line Side” inte-
grated circuit. This integration results in cost savings without sac-
rificing audio fidelity or modem functionality. The STAC9251 also
implements a direct interface to two digital microphones, support-
ing advanced beam forming applications and resulting in
increased quality of voice applications.
STAC9250/9251
•
Integrated modem functionality from Silicon Labs
1
supports reduced BOM costs
•
•
•
•
•
•
•
•
Interfaces directly to Line Side integrated circuit from
Silicon Labs
Supports two-chip audio plus modem functionality
Supports Software modem implementations from
Motorola and others compatible with the Silicon Labs
chipset
Supports Motherboard implementations eliminating MDC
card and connector costs
Reduced board space
Reduced external component count
FEATURES
•
High-integration HD Audio Product
•
2-channel PC Audio CODEC
•
Modem “System-side” functionality
1
•
Dual Digital Microphone interface(STAC9251)
•
Two-Channel DACs and ADCs with 24-bit sample
resolution
Integrated Headphone Amps
Stereo Analog Microphone
•
•
•
•
•
•
•
•
•
Supports Stereo Microphone
Microphone Boost 0, 10, 20, 30, 40dB
S/PDIF In and Out
Universal Jacks™ Functionality for jack retasking
Adjustable VREF Out
Digital PC Beep to all outputs
48-pin LQFP Environmental Package
Two-Channel High Definition Audio CODEC with
Modem and Dual Digital Microphone Interfaces
•
•
•
High performance
ΣΔ
technology
Sample rates up to 192 KHz
100dB DAC SNR
1. Modem functionality can only be used with a “Line
Side” DAA integrated circuit, Si3080 or similar, available
from Silicon Labs (www.silabs.com).
IDT™
1
STAC9250/9251
V 1.2 01/08
TWO-CHANNEL HD AUDIO CODEC WITH MODEM & DUAL DIGITAL MICROPHONE INTERFACES
STAC9250/9251
TWO-CHANNEL HD AUDIO CODEC WITH MODEM & DUAL DIGITAL MICROPHONE INTERFACES
PC AUDIO
Table of Contents
1. DESCRIPTION ........................................................................................................................... 9
1.1. Overview ........................................................................................................................................... 9
1.2. Features ............................................................................................................................................ 9
1.3. Description ...................................................................................................................................... 10
2. CHARACTERISTICS ............................................................................................................... 11
2.1. Audio Fidelity .................................................................................................................................. 11
2.2. Electrical Specifications ................................................................................................................... 11
2.3. STAC9250/9251 5V Analog Performance Characteristics .............................................................. 13
2.4. STAC9250/9251 4V Analog Performance Characteristics .............................................................. 14
2.5. STAC9250/9251 3.3V Analog Performance Characteristics ........................................................... 14
2.6. Power Consumption ........................................................................................................................ 15
3. DETAILED DESCRIPTION ...................................................................................................... 16
3.1. SPDIF Input ..................................................................................................................................... 16
3.2. SPDIF Output .................................................................................................................................. 16
3.3. Digital Microphone Support (STAC9251 only) ................................................................................. 16
3.4. SiLabs System Side Modem ........................................................................................................... 16
3.5. Mono Out ......................................................................................................................................... 16
3.6. Headphone Drivers (Restrictions) ................................................................................................... 17
3.7. Universal Jacks™ ............................................................................................................................ 17
4. FUNCTIONAL BLOCK DIAGRAMS ........................................................................................ 18
4.1. STAC9250 ....................................................................................................................................... 18
4.2. STAC9251 ....................................................................................................................................... 19
5. WIDGET INFORMATION .........................................................................................................20
5.1. Widget Diagram - STAC9250 .......................................................................................................... 20
5.2. Widget Diagram - STAC9251 .......................................................................................................... 21
5.3. Widget List - STAC9250/9251 ........................................................................................................ 22
5.4. Root Node (NID = 0x00) .................................................................................................................. 23
5.5. AFG Node (NID = 0x01) .................................................................................................................. 24
5.6. DAC0Cnvtr Node (NID = 0x02) ....................................................................................................... 39
5.7. ADC0Cnvtr Node (NID = 0x03) ....................................................................................................... 43
5.8. SPDIFinCnvtr Node (NID = 0x04) ................................................................................................... 48
5.9. SPDIFoutCnvtr Node (NID = 0x05) ................................................................................................. 54
5.10. DAC0Mux Node (NID = 0x06) ....................................................................................................... 59
5.11. DigInPin Node (NID = 0x07) .......................................................................................................... 62
5.12. DigOutPin Node (NID = 0x08) ....................................................................................................... 68
5.13. ADC0VolMux Node (NID = 0x09) .................................................................................................. 73
5.14. MasterVol Node (NID = 0x0E) ....................................................................................................... 77
5.15. InPortMux Node (NID = 0x0F) ....................................................................................................... 80
5.16. PortAPin Node (NID = 0x0A) ......................................................................................................... 84
5.17. PortDPin Node (NID = 0x0D) ........................................................................................................ 89
5.18. PortCPin Node (NID = 0x0C) ........................................................................................................ 95
5.19. PortBPin Node (NID = 0x0B) ....................................................................................................... 101
5.20. MonoOutPin Node (NID = 0x10) ................................................................................................. 107
5.21. CDPin Node (NID = 0x11) ........................................................................................................... 112
5.22. MonoOutMix Node (NID = 0x12) ................................................................................................. 115
5.23. PCBeep Node (NID = 0x13) ........................................................................................................ 117
5.24. ADC0InMux Node (NID = 0x14) .................................................................................................. 120
5.25. DigMicPin Node (NID = 0x15) (STAC9251 only) ......................................................................... 125
6. ORDERING INFORMATION .................................................................................................. 129
6.1. STAC9250/9251 Family Options and Part Order Numbers ........................................................... 129
6.2. STAC9250/9251 Pin Diagram ....................................................................................................... 130
6.3. Pin Table for STAC9250/9251 ...................................................................................................... 131
7. PACKAGE DRAWINGS ......................................................................................................... 133
IDT™
2
STAC9250/9251
V 1.2 01/08
TWO-CHANNEL HD AUDIO CODEC WITH MODEM & DUAL DIGITAL MICROPHONE INTERFACES
STAC9250/9251
TWO-CHANNEL HD AUDIO CODEC WITH MODEM & DUAL DIGITAL MICROPHONE INTERFACES
PC AUDIO
7.1. 48-Pin LQFP .................................................................................................................................. 133
8. SOLDER REFLOW PROFILE ............................................................................................... 134
8.1. Standard Reflow Profile Data ........................................................................................................ 134
8.2. Pb Free Process - Package Classification Reflow Temperatures ................................................. 135
9. REVISION HISTORY ............................................................................................................. 136
List of Figures
Figure 1. STAC9250 Functional Block Diagram ........................................................................................... 18
Figure 2. STAC9250 Functional Block Diagram ........................................................................................... 19
Figure 3. STAC9250 Widget Diagram .......................................................................................................... 20
Figure 4. STAC9251 Widget Diagram .......................................................................................................... 21
Figure 5. STAC9250/9251 Pin Diagram ..................................................................................................... 130
Figure 6. 48-Pin LQFP Package Outline and Package Dimensions ........................................................... 133
Figure 7. Solder Reflow Profile ................................................................................................................... 134
List of Tables
Table 1. Digital Power Consumption ............................................................................................................. 15
Table 2. 5V Analog Power Consumption ....................................................................................................... 15
Table 3. High Definition Audio Widget ........................................................................................................... 22
Table 4. Root PnpID Command Verb Format ................................................................................................ 23
Table 5. Root PnpID Command Response Format ....................................................................................... 23
Table 6. Root RevID Command Verb Format ................................................................................................ 23
Table 7. Root RevID Command Response Format ....................................................................................... 23
Table 8. Root NodeInfo Command Verb Format ........................................................................................... 24
Table 9. Root NodeInfo Command Response Format .................................................................................. 24
Table 10. AFG Reset Command Verb Format .............................................................................................. 24
Table 11. AFG Reset Command Response Format ...................................................................................... 25
Table 12. AFG NodeInfo Command Verb Format ......................................................................................... 25
Table 13. AFG NodeInfo Command Response Format ................................................................................. 25
Table 14. AFG Type Command Verb Format ................................................................................................ 26
Table 15. AFG Type Command Response Format ....................................................................................... 26
Table 16. AFG GrpCap Command Verb Format ........................................................................................... 26
Table 17. AFG GrpCap Command Response Format ................................................................................... 26
Table 18. AFG FrmtCap Command Verb Format .......................................................................................... 27
Table 19. AFG FrmtCap Command Response Format ................................................................................. 27
Table 20. AFG StreamCap Command Verb Format ...................................................................................... 28
Table 21. AFG StreamCap Command Response Format ............................................................................. 28
Table 22. AFG PwrCap Command Verb Format ........................................................................................... 28
Table 23. AFG PwrCap Command Response Format .................................................................................. 29
Table 24. AFG GPIOCap Command Verb Format ........................................................................................ 29
Table 25. AFG GPIOCap Command Response Format ................................................................................ 30
Table 26. AFG OutAmpCap Command Verb Format .................................................................................... 30
Table 27. AFG OutAmpCap Command Response Format ........................................................................... 30
Table 28. AFG PwrState Command Verb Format ......................................................................................... 31
Table 29. AFG PwrState Command Response Format ................................................................................. 31
Table 30. AFG UnsolResp Command Verb Format ...................................................................................... 31
Table 31. AFG UnsolResp Command Response Format .............................................................................. 32
Table 32. AFG GPIO Command Verb Format ............................................................................................... 32
IDT™
3
STAC9250/9251
V 1.2 01/08
TWO-CHANNEL HD AUDIO CODEC WITH MODEM & DUAL DIGITAL MICROPHONE INTERFACES
STAC9250/9251
TWO-CHANNEL HD AUDIO CODEC WITH MODEM & DUAL DIGITAL MICROPHONE INTERFACES
PC AUDIO
Table 33. AFG GPIO Command Response Format ...................................................................................... 32
Table 34. AFG GPIOEn Command Verb Format .......................................................................................... 33
Table 35. AFG GPIOEn Command Response Format .................................................................................. 33
Table 36. AFG GPIODir Command Verb Format .......................................................................................... 34
Table 37. AFG GPIODir Command Response Format .................................................................................. 34
Table 38. AFG GPIOWake Command Verb Format ...................................................................................... 35
Table 39. AFG GPIOWake Command Response Format ............................................................................. 35
Table 40. AFG GPIOUnsolEn Command Verb Format ................................................................................. 35
Table 41. AFG GPIOUnsolEn Command Response Format ......................................................................... 36
Table 42. AFG GPIOSticky Command Verb Format ..................................................................................... 36
Table 43. AFG GPIOSticky Command Response Format ............................................................................. 37
Table 44. AFG SysID Command Verb Format .............................................................................................. 37
Table 45. AFG SysID Command Response Format ...................................................................................... 38
Table 46. AFG DigMic (for STAC9251 only) Command Verb Format ........................................................... 38
Table 47. AFG DigMic (for STAC9251 only) Command Response Format .................................................. 38
Table 48. DAC0Cnvtr Frmt Command Verb Format ...................................................................................... 39
Table 49. DAC0Cnvtr Frmt Command Response Format ............................................................................. 39
Table 50. DAC0Cnvtr WCap Command Verb Format ................................................................................... 40
Table 51. DAC0Cnvtr WCap Command Response Format .......................................................................... 40
Table 52. DAC0Cnvtr PwrState Command Verb Format .............................................................................. 41
Table 53. DAC0Cnvtr PwrState Command Response Format ...................................................................... 41
Table 54. DAC0Cnvtr Stream Command Verb Format ................................................................................. 42
Table 55. DAC0Cnvtr Stream Command Response Format ......................................................................... 42
Table 56. ADC0Cnvtr Frmt Command Verb Format ...................................................................................... 43
Table 57. ADC0Cnvtr Frmt Command Response Format ............................................................................. 43
Table 58. ADC0Cnvtr WCap Command Verb Format ................................................................................... 44
Table 59. ADC0Cnvtr WCap Command Response Format .......................................................................... 44
Table 60. ADC0Cnvtr ConnLen Command Verb Format .............................................................................. 45
Table 61. ADC0Cnvtr ConnLen Command Response Format ...................................................................... 45
Table 62. ADC0Cnvtr ConnLst Command Verb Format ................................................................................ 46
Table 63. ADC0Cnvtr ConnLst Command Response Format ....................................................................... 46
Table 64. ADC0Cnvtr ProcState Command Verb Format ............................................................................. 46
Table 65. ADC0Cnvtr ProcState Command Response Format ..................................................................... 46
Table 66. ADC0Cnvtr PwrState Command Verb Format .............................................................................. 47
Table 67. ADC0Cnvtr PwrState Command Response Format ...................................................................... 47
Table 68. ADC0Cnvtr Stream Command Verb Format ................................................................................. 47
Table 69. ADC0Cnvtr Stream Command Response Format ......................................................................... 47
Table 70. SPDIFinCnvtr Frmt Command Verb Format .................................................................................. 48
Table 71. SPDIFinCnvtr Frmt Command Response Format ......................................................................... 48
Table 72. SPDIFinCnvtr WCap Command Verb Format ............................................................................... 49
Table 73. SPDIFinCnvtr WCap Command Response Format ....................................................................... 49
Table 74. SPDIFinCnvtr FrmtCap Command Verb Format ........................................................................... 50
Table 75. SPDIFinCnvtr FrmtCap Command Response Format ................................................................... 50
Table 76. SPDIFinCnvtr StreamCap Command Verb Format ....................................................................... 51
Table 77. SPDIFinCnvtr StreamCap Command Response Format .............................................................. 52
Table 78. SPDIFinCnvtr ConnLen Command Verb Format ........................................................................... 52
Table 79. SPDIFinCnvtr ConnLen Command Response Format .................................................................. 52
Table 80. SPDIFinCnvtr ConnLst Command Verb Format ............................................................................ 52
Table 81. SPDIFinCnvtr ConnLst Command Response Format ................................................................... 53
Table 82. SPDIFinCnvtr Stream Command Verb Format .............................................................................. 53
Table 83. SPDIFinCnvtr Stream Command Response Format ..................................................................... 53
Table 84. SPDIFinCnvtr DigCtl Command Verb Format ............................................................................... 53
Table 85. SPDIFinCnvtr DigCtl Command Response Format ....................................................................... 54
Table 86. SPDIFoutCnvtr Frmt Command Verb Format ................................................................................ 54
Table 87. SPDIFoutCnvtr Frmt Command Response Format ....................................................................... 55
IDT™
4
STAC9250/9251
V 1.2 01/08
TWO-CHANNEL HD AUDIO CODEC WITH MODEM & DUAL DIGITAL MICROPHONE INTERFACES
STAC9250/9251
TWO-CHANNEL HD AUDIO CODEC WITH MODEM & DUAL DIGITAL MICROPHONE INTERFACES
PC AUDIO
Table 88. SPDIFoutCnvtr WCap Command Verb Format ............................................................................. 56
Table 89. SPDIFoutCnvtr WCap Command Response Format .................................................................... 56
Table 90. SPDIFoutCnvtr FrmtCap Command Verb Format ......................................................................... 57
Table 91. SPDIFoutCnvtr FrmtCap Command Response Format ................................................................ 57
Table 92. SPDIFoutCnvtr StreamCap Command Verb Format ..................................................................... 58
Table 93. SPDIFoutCnvtr StreamCap Command Response Format ............................................................ 58
Table 94. SPDIFoutCnvtr Stream Command Verb Format ........................................................................... 58
Table 95. SPDIFoutCnvtr Stream Command Response Format ................................................................... 58
Table 96. SPDIFoutCnvtr DigCtl Command Verb Format ............................................................................. 59
Table 97. SPDIFoutCnvtr DigCtl Command Response Format ..................................................................... 59
Table 98. DAC0Mux WCap Command Verb Format ..................................................................................... 59
Table 99. DAC0Mux WCap Command Response Format ............................................................................ 60
Table 100. DAC0Mux ConnLen Command Verb Format .............................................................................. 60
Table 101. DAC0Mux ConnLen Command Response Format ...................................................................... 61
Table 102. DAC0Mux ConnSel Command Verb Format ............................................................................... 61
Table 103. DAC0Mux ConnSel Command Response Format ...................................................................... 61
Table 104. DAC0Mux ConnLst Command Verb Format ............................................................................... 61
Table 105. DAC0Mux ConnLst Command Response Format ....................................................................... 61
Table 106. DAC0Mux LR Command Verb Format ........................................................................................ 62
Table 107. DAC0Mux LR Command Response Format ................................................................................ 62
Table 108. DigInPin WCap Command Verb Format ...................................................................................... 62
Table 109. DigInPin WCap Command Response Format ............................................................................. 63
Table 110. DigInPin Cap Command Verb Format ......................................................................................... 63
Table 111. DigInPin Cap Command Response Format ................................................................................ 64
Table 112. DigInPin PwrState Command Verb Format ................................................................................. 64
Table 113. DigInPin PwrState Command Response Format ........................................................................ 64
Table 114. DigInPin Ctl Command Verb Format ........................................................................................... 65
Table 115. DigInPin Ctl Command Response Format ................................................................................... 65
Table 116. DigInPin UnsolResp Command Verb Format .............................................................................. 65
Table 117. DigInPin UnsolResp Command Response Format ..................................................................... 66
Table 118. DigInPin Sense Command Verb Format ..................................................................................... 66
Table 119. DigInPin Sense Command Response Format ............................................................................. 66
Table 120. DigInPin EAPD Command Verb Format ...................................................................................... 67
Table 121. DigInPin EAPD Command Response Format ............................................................................. 67
Table 122. DigInPin Config Command Verb Format ..................................................................................... 67
Table 123. DigInPin Config Command Response Format ............................................................................. 68
Table 124. DigOutPin WCap Command Verb Format ................................................................................... 68
Table 125. DigOutPin WCap Command Response Format .......................................................................... 68
Table 126. DigOutPin Cap Command Verb Format ...................................................................................... 69
Table 127. DigOutPin Cap Command Response Format .............................................................................. 69
Table 128. DigOutPin ConnLen Command Verb Format .............................................................................. 70
Table 129. DigOutPin ConnLen Command Response Format ...................................................................... 70
Table 130. DigOutPin ConnSel Command Verb Format ............................................................................... 71
Table 131. DigOutPin ConnSel Command Response Format ...................................................................... 71
Table 132. DigOutPin ConnLst Command Verb Format ............................................................................... 71
Table 133. DigOutPin ConnLst Command Response Format ....................................................................... 71
Table 134. DigOutPin Ctl Command Verb Format ........................................................................................ 72
Table 135. DigOutPin Ctl Command Response Format ................................................................................ 72
Table 136. DigOutPin Config Command Verb Format .................................................................................. 72
Table 137. DigOutPin Config Command Response Format .......................................................................... 72
Table 138. ADC0VolMux VolRight Command Verb Format .......................................................................... 73
Table 139. ADC0VolMux VolRight Command Response Format ................................................................. 73
Table 140. ADC0VolMux VolLeft Command Verb Format ............................................................................ 74
Table 141. ADC0VolMux VolLeft Command Response Format .................................................................... 74
Table 142. ADC0VolMux WCap Command Verb Format .............................................................................. 74
IDT™
5
STAC9250/9251
V 1.2 01/08
TWO-CHANNEL HD AUDIO CODEC WITH MODEM & DUAL DIGITAL MICROPHONE INTERFACES
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