CA20k1 和 CA20k2 对比阅读

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4 X- p9 X2 Q8 x4 j* ^  l9 h% Z% SCA20k1:
% @6 m- B# d6 c; f! bOverview
3 V7 P4 `7 Z, kThe CA20K1 digital audio processor is a slave processor designed to
8 l" _2 c9 A- ?accelerator digital audio processing and is available in 0.13mm BGA package
0 y6 n7 s2 f5 Q/ H1 h) Usize 23mm by 23mm. The CA20K1 contain several special purposes
1 {+ @. [* L! s7 s6 Xprocessing units including: a sample rate converter engine, a digital filter
engine, a digital delay line accelerator know as the “tank engine”, a digital
filter engine, a powerful mixer, a micro-programmable audio DSP, various
digital I/O capabilities and bus mastering external memory interfaces. Unlike
the host interface control port the bus mastering “audio transport” supports
burst mode accesses to the PCI and SDRAM interfaces. Host processor is
8 j# K: D) m5 ]* }9 P( g6 ^4 Irequired to control the CA20K1 through a 32-bit PCI bus or a generic
microprocessor interface using a series of reads and writes to control
registers.
The X-Fi audio enhancement algorithm is integrated into the CA20K1 audio
processor to extend the X-Fi enjoyment to the customers. As the next
generation high-resolution audio processor, CA20K1 provides dramatic
improvements to enhance listening experiences for movies and improves
the capabilities, performance and quality of audio. The enhanced sound
quality makes movies more realistic. Users can truly immerse themselves in
2 x  T" m! }$ w% r( Hscenes like underwater, volcano eruption, war zone etc. while enjoying the
enhanced sound effect at home. The X-Fi module gives you an experience
: z" w5 m# `( a6 p% ?0 U3 o, Ubeyond studio quality. Users can enjoy the live concert experience in their
own comfortable surroundings.
" S, ]( }) e1 p  f7 ?0 M, UKey Features
· 400/200 MHz internal clock rate
" e# \; O0 F! d; i9 w$ i! R$ N· 4 stereo S/PDIF inputs and 4 stereo S/PDIF outputs
" a9 p& T2 m/ f+ S+ ?· 4 stereo I2S digital inputs and 4 stereo I2S digital outputs
% U/ E6 E# j# y4 E· Sample rate slave capability to I2S and S/PDIF
( @) F+ J8 w/ J( y* T% z· 16 independently configurable GPIOs pins
5 s9 u# f: e2 J( g* a: U· I2C controller
· EEPROM interface for overriding reset defaults and storing software values
· 5-volt tolerant 3.3V I/O
· Power management with an energy efficient 1.2V core
· 2 UARTs with programmable baud rates
· 4-Thread, Interleaved Quartet DSP with 1,200 MFLOPS max throughput
+ m7 B7 ?* J, r· Fully flexible routing – connect anything to anything – using “audio ring” bus.
- Y: o: Y) |* D3 U· Tank accelerator that supports fractional and modulated digital delay lines
· Very high quality Sample Rate Converter (SRC)
· Dual-mode microprocessor/PCI interface with shared pins
- e# ?' v; G6 E: L" L1 B· 100 MHz SDRAM Interface for high bandwidth audio requirements
· Paged Virtual Memory support
· Native 96kHz 24-bit, 192 KHz, 44.1 KHz, and 32 KHz support
; c0 ~& q" x' t  j) o! c/ ^· Wall clock and interval timer tied to the sample rate
· Programmable PLL that supports multiple sample rates with a single crystal
. h$ g2 B& T% Q( z2 I1 B5 F& D· Host interrupt subsystem
  P* Y/ D  V" }2 K# P8 N2 hAudio Enhancement
6 R6 B! z; O# x6 H! w, V( M· X-Fi audio enhancement algorithm
 X-Fi CMSS-3D Surround
5 i0 L! b; y# f7 }% P& p- Stereo Xpand for stereo to multi-channel upmix with ambient extraction and voice centering.
/ {: H+ G" a, u  q1 F  b- Stereo Surround for duplicating of stereo over multi-channel.
 X-Fi CMSS-3D Headphone Expander for externalization of stereo content and very accurate HRTF for 3D
positioning.
 X-Fi CMSS-3D Virtual for audio virtualization and enhancements over 2 loudspeakers. Stereo Surround mode.
; j/ F* G/ Z0 s% A. m' ?7 p8 L) b7 u X-Fi CrystalizerTM
. J. Z* L4 _5 ?& I- Enhances musical dynamics by emphasizing sharp percussive sounds and transients.
% I4 p' o9 }# ?7 t) h% n* c8 O- Creating a “puncher” and more dynamic listening experience.
1 M) \$ Q5 Q4 p· THX Setup Console and THX Certification
6 R% X: y4 ~3 f5 f& ^· Highest Quality Audio
2 x) @' E7 [& E+ q" i; {8 P 24-bit/96kHz recording
4 }4 q2 [8 H- ]7 v 24-bit/96kHz 7.1 playback, 24-bit/192kHz Stereo playback
% n6 y+ P! S/ {( R, E. h3 A2 B· 10-Band, Multi-Channel Graphics Equalizer support presets and custom preset
· SVM – Smart Volume Management
· EAX? ADVANCED HD? 5.0
 128 Voices
 EAX? Voice
 EAX? PurePath?
 Environment FlexiFX
 EAX? MacroFX?
8 q8 h6 b3 P4 E+ [0 `6 m Environment Occlusion?
0 R  m$ M: S% p6 z5 ^' A· OpenAL Support
! Z3 J7 g6 |! X6 y% ~, M% {· Creative ALchemy
Provides multi-channel audio for legacy game titles running on Windows Vista?

pyncell

换汤
% e0 V7 I0 X& N  F( i( `CA20k2
Overview
6 R9 }2 Y5 b4 kThe CA20K2 digital audio processor is based on the CA20K1 architecture. The
0 s5 {, h5 n; N' O& eCA20K2 uses an advanced PCI Express (PCIe) one-lane interface and adds an
embedded RISC processor to safegaurd against long control latencies
introduced by the PCIe interface. The CA20K2 also expands the audio I/O
8 k" Z6 {& ]- K" X& ~% e$ o3 Jcapabilities and adds DDRAM for increased local memory bandwidth. In
addition, the CA20K2 incorporates a Universal Audio Architecture (UAA)
component and is available in 0.13mm BGA package size 19mm by 19mm.
The X-Fi audio enhancement algorithm is integrated into the CA20K2 audio
processor to extend the X-Fi enjoyment to the customers. As the next
! q3 y$ }9 u9 pgeneration high-resolution audio processor, CA20K2 provides dramatic
/ B0 }: r, T' D* E  s2 Z3 ~improvements to enhance listening experiences for movies and improves
the capabilities, performance and quality of audio. The enhanced sound
. \. b/ ~* k# g6 t& a+ rquality makes movies more realistic. Users can truly immerse themselves in
scenes like underwater, volcano eruption, war zone etc. while enjoying the
  ^* O. ~( |6 c& B6 Z7 d& V8 o( xenhanced sound effect at home. The X-Fi module gives you an experience
beyond studio quality. Users can enjoy the live concert experience in their
6 g/ X1 ^7 r: \' m. [) E' z- K6 Fown comfortable surroundings.
Key Features
· PCI Express 1.1 interface, up to 8 simultaneous transactions supported
1 T  y+ s8 R* ~" f5 Y· Sample Rate Converter engine
( G  t9 g* N5 J& p0 a. y) z  t· Digital Filter engine
! S( B) A' U) ?4 P! j' F# t+ G) a· Tank, digital delay line accelerator
· Audio Mixer
· Microprogramable “Quartet” audio DSP
· 4 stereo S/PDIF inputs and 4 stereo S/PDIF outputs
, q6 p7 U9 ?" A7 {! `9 ]+ g· 4 stereo I2S digital inputs and 4 stereo I2S digital outputs
0 V: s' E7 |1 r+ r5 l; K· Sample rate slave capability to I2S and S/PDIF
· DDR SDRAM interface
" H  E3 G- v* ?& k· Parameter Generator / Mixer
4 o6 ^6 d2 U% h' ?" g% _· Universal Audio Architecture component
· Integrated HD-Audio core with core switch
7 G* x* @9 R+ a* y4 N2 R: @7 `· Up to 32 GPIOs
· 16-bit general purpose parallel control bus
* I% B3 d4 k4 G8 I8 w) g5 G% o· I2C master interface
; R6 x* a. X+ F9 q8 q( c# h( cAudio Enhancement
· X-Fi audio enhancement algorithm
$ R; J$ ^6 h& R# R X-Fi CMSS-3D Surround
- Stereo Xpand for stereo to multi-channel upmix with ambient extraction and voice centering.
5 v! L& h# r* K$ _5 f- G% t- Stereo Surround for duplicating of stereo over multi-channel.
 X-Fi CMSS-3D Headphone Expander for externalization of stereo content and very accurate HRTF for 3D
positioning.
. I! V% B8 l; {  I) M, f X-Fi CMSS-3D Virtual for audio virtualization and enhancements over 2 loudspeakers. Stereo Surround mode.
3 n4 _, }" Y+ ?) B3 a5 [9 B' r X-Fi CrystalizerTM
' ~7 H, B! Q1 D( s6 R* ?- Enhances musical dynamics by emphasizing sharp percussive sounds and transients.
, _& }8 D% Q( O* ]- O; V  F) [- Creating a “puncher” and more dynamic listening experience.
· THX Setup Console and THX Certification
/ C1 I  F3 Y% |6 Y# l+ w/ O/ m; Y· Highest Quality Audio
7 i  h" u8 T; P3 u) w' W; J: S 24-bit/96kHz recording
 24-bit/96kHz 7.1 playback, 24-bit/192kHz Stereo playback
· 10-Band, Multi-Channel Graphics Equalizer support presets and custom preset
· SVM – Smart Volume Management
# p1 ?5 Y- u1 n: W8 i! Z$ {8 t· EAX? ADVANCED HD? 5.0
 128 Voices
 EAX? Voice
 EAX? PurePath?
9 ~! |. R5 R( {+ R1 ]% j& j1 Y% X Environment FlexiFX
 EAX? MacroFX?
 Environment Occlusion?
· OpenAL Support
· Creative ALchemy
" _" ]7 p& W! q6 I' l% D9 `Provides multi-channel audio for legacy game titles running on Windows Vista?