CMI8738-MX Datasheet, PDF (2/32 Pages) C-Media Electronics – PCI-6CH C3DX series /PCI-Based HRTF 3D Extension Positional Audio Chip

CMI8738
PCI-6CH C3DX series /PCI-Based HRTF 3D Extension Positional Audio Chip
TABLE OF CONTENTS
Revision History....................................................................................................................................... 3
1. Description and Overview................................................................................................................ 4
2. Features ............................................................................................................................................ 4
3. Block Diagram ................................................................................................................................. 5
4. Pin Assignment................................................................................................................................. 6
5. Pin Description ................................................................................................................................. 7
5.1 CMI8738/PCI-6CH C3DX Series Chip Function List......................................................... 7
5.2 Digital Pin Description ......................................................................................................... 7
6. Electrical Characteristics .................................................................................................................. 9
6.1 Absolute Maximum Ratings................................................................................................. 9
6.2 Digital Characteristics .......................................................................................................... 9
7. PCI Configuration Spaces (Audio) ................................................................................................ 10
8. PCI register..................................................................................................................................... 12
8.1 Internal Register Mapping.............................................................................................................. 12
9. Audio Processing Technology........................................................................................................ 24
9.1 Stereo.............................................................................................................................................. 24
9.2 Surround (Stereo Expander) ........................................................................................................... 24
9.3 Multi-Speaker Surround (Dolby Pro Logic or Digital AC-3) ........................................................ 24
9.4 HRTF 3D Positional 3D (C-Media 3D) ......................................................................................... 25
9.5 HRTF 3D Extension Positional (C-Media 3DX) ........................................................................... 26
9.6 C3D Positional Audio Technology White-Paper............................................................................ 26
a.
Use Headphones to Have Much Better Effect........................................................ 27
b.
Choose Correct Output Devices ............................................................................. 27
c.
Position of Speakers ............................................................................................... 28
9.7 Turn Surround Sound Functions off............................................................................................... 28
10. CMI8738 PCI Audio Adapter Layout Notes .................................................................................... 29
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