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原帖由 sd-iori 于 2008-2-13 23:10 发表 / K( y+ I( ?4 n" T' P+ N: V
:shifty: CMI芯片,,不知具体那个型号,,) o0 t* d7 E0 A6 d, q
7 c7 |6 E% \8 h, O8 Y不知售价如何,,,
- F6 x1 n+ p% T6 XCM101S+ USB 2CH Audio Controller# H6 I( q( E' o, n7 L* Z
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Download Datasheet 7 g7 t4 @- g8 b! {
5 s1 z! L# v6 n, m$ F0 hOverview 2 @% z" z9 x2 e
The CM101S+ is the world's first USB audio chip that supports Dolby Digital Live. This new chip design can provide a wide range of features and high quality sound for portable USB audio product applications. It is a highly integrated single chip for USB stereo audio and SPDIF output application. Minimum external components are needed for building an USB audio system, which makes CM101S+ a simple and very cost-effective solution.
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CM101S+ is design for all kind of PC base USB personal multi-media device products. It is USB 2.0 full speed compatible and utilizes USB bus power for plug-and-play feature. Via C-Media Xear 3D Sound USB audio driver, users can avail themselves of a much better virtual 7.1 CH environment capable. For high-end multi-media application, this light and portable personal audio device can easy to processing any sound source to Dolby Digital AC-3 raw data by real-time encoding function. The world first innovation software function to grade up every PC system and output high quality digital sound effects for link up with high-end home theater equipments like amplifier, DVD player or decoder etc.! o: g+ i2 p& z/ X
6 P$ O3 B; z8 E# @$ i/ zThis special feature is Dolby Digital Live function modules. As we know, Dolby Digital is the world well-known sound technology brand and generality using on consumer electronics. Therefore, if PC products need to be home theater equipment or media center this would be key feature and selling point for product development. These functions not only provide easy bridge to connect PCs and consumer electronics but also adding value and upgrade sound quality to PC products. In the future, PCs can put on Dolby logo on it and provide advanced sound quality to end-user. All of modules were implemented by C-Media in software technology and anyone can request these features by license from Dolby Lab. through C-Media.* _/ V3 w4 Y7 K7 C8 Z8 I
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# ?3 X) w, W' m7 x, c- |l USB 2.0 Full Speed Compatible and USB IF Certification 3 \9 l# t: z* x" w" c7 n& D2 s, L' ^
l USB audio device class specification v1.0 Compatible % O" c* E! Z; A
l USB bus powered 500mA operation with suspend mode support
, P- ^! ]: j3 a* y$ w: o6 [/ Ul Single 12MHz crystal input with on-chip PLL and embedded USB transceiver
0 u- U4 \8 W, Z# M) ~l USB audio function topology has 1 input terminal, 1 output terminal, and 1 feature unit / W6 y; j* C; I S
l Alternate zero bandwidth setting for releasing bandwidth on USB bus during inactive operation : G% b! G! {, _ M1 v9 q; t
l Isochroous transfer using adaptive synchronization with internal PLL
0 \" m4 Y# v# L7 L4 F$ o3 Bl High performance 16-Bit Stereo, 48 / 44.1 KHz Sampling Rate for Audio Playback % m# C5 B y Q. I4 n
l Embedded high performance 16 bit stereo audio DAC
% Y1 V g/ [5 j) Dl Embedded Digital Control Power Amplifier for Speaker Driving
- M! g7 S) ^. T. m3 M9 o5 s4 Q. J ll SPDIF Output Interface , ?- ^1 i* p4 G$ F% ~
l Support Dynamic Range Control (DRC) Feature to Provide a Better Listen Experience # X* Y0 J) D; `: ]0 K! l) E
l Embedded X2 Modulation for Higher Audio Quality # X4 { u2 y) [
l Embedded Anti-Pop Circuit with Internal Feedback Structure
# B9 H- ^& ^) V& M9 pl Volume control input with simple external VR circuit # L' {0 N- v6 o4 R+ y
l GPIO pin for application specific usage & E2 u: T, U: v$ A, | _, ?# I
l Support Power Amplifier Enable / Disable Control Pin
m ^& g- @; H& B5 _7 n( Zl Embedded Power-On-Reset Block % \9 d Z4 ]3 [5 H3 _$ m; M& O
l LED Indicator Pin During Playback
! j% j! W: w# z( `% Pl Embedded 5V to 3.3V Regulator with Voltage Level Detector for Single 5V External Power Supply
, a9 ~+ I8 a! F/ j0 q ]l 3.3V IO with 5V tolerance; 3.3V core logics design
+ D# W5 Y/ J) k& Hl Compact 18 pin SOP package
7 O/ ]8 J& t' K' J$ E$ Al Dolby Digital Live Software Sound Technology Bundle
y5 F; E0 z. \; k$ c+ ql Software Xear 3D Sound Technology With HRTF 3D, EAX™, Speaker Shifter and Virtual 7.1CH effects 3 ^* s& u- T. v& X7 y; J6 x! P \
l USB Software Driver Compatible with Win 98SE / Win ME / Win 2000 / Win XP |
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