嵌入式x86 CPU平台首選？

tommywgt

General Features
2 A& }/ X6 S4 Y* M. Y* g. r( Z, Z  R■ Functional blocks include:
— CPU Core
— GeodeLink™ Control Processor
— GeodeLink Interface Units
6 Q9 S2 x; n5 }. C9 G— GeodeLink Memory Controller
# Q# D# r6 ?7 E1 I— Graphics Processor
— Display Controller
— Video Processor
– TFT Controller/Video Output Port
— Video Input Port
— GeodeLink PCI Bridge
— Security Block
■ 0.13 micron process
/ o9 U' H' u0 i$ o8 F5 J+ W9 O■ Packaging:
— 481-Terminal BGU (Ball Grid Array Cavity Up) with
' X$ a9 L* a* ]: h; I# Q: [6 iinternal heatspreader
■ Single packaging option supports all features
$ k4 A3 A- U4 `7 jCPU Processor Features
% I; Z3 m& Q" w7 ^- h$ M2 @■ x86/x87-compatible CPU core
■ Performance:
— Processor frequency: up to 500 MHz
9 y/ N! \4 Q. b0 x% y; `/ g6 G— Dhrystone 2.1 MIPs: 150 to 450
— Fully pipelined FPU
■ Split I/D cache/TLB (Translation Look-aside Buffer):
— 64 KB I-cache/64 KB D-cache
— 128 KB L2 cache configurable as I-cache, D-cache,
9 K4 v. k4 O$ I3 R& t/ ~6 Nor both
% u, O0 ]- s. T" g1 ~1 V■ Efficient prefetch and branch prediction
6 S& u0 `/ n$ R0 R0 X■ Integrated FPU that supports the MMX® and
4 X  s7 M0 e+ L! J& hAMD 3DNow!™ instruction sets
! a. U. W/ a0 U& ^! p■ Fully pipelined single precision FPU hardware with
microcode support for higher precisions
GeodeLink™ Control Processor
■ JTAG interface:
— ATPG, Full Scan, BIST on all arrays
— 1149.1 Boundary Scan compliant
■ ICE (in-circuit emulator) interface
■ Reset and clock control
■ Designed for improved software debug methods and
: B. C2 V0 j' J" o! c. V0 N" v( Eperformance analysis
- [* u3 l  {& G, c/ ?. Y■ Power Management:
  @9 b; m2 E$ V' C5 O— Total Dissipated Power (TDP) 3.8W, 1.6W typical @
500 MHz max power
8 e+ Q& g' G9 T: a0 G. n— GeodeLink active hardware power management
— Hardware support for standard ACPI software power
management
— I/O companion SUSP/SUSPA power controls
— Lower power I/O
— Wakeup on SMI/INTR
■ Designed to work in conjunction with the
AMD Geode™ CS5536 companion device
4 b+ `0 U# D3 t/ ]6 M2 z& eGeodeLink™ Architecture
+ P4 H4 k/ ?/ b■ High bandwidth packetized uni-directional bus for
! T; ^+ [% L' Finternal peripherals
■ Standardized protocol to allow variants of products to be
3 Q: X8 G* H& f4 ]1 c: Mdeveloped by adding or removing modules
■ GeodeLink Control Processor (GLCP) for diagnostics
and scan control
■ Dual GeodeLink Interface Units (GLIUs) for device interconnect
& g4 h7 ~) x) @* \& C3 b9 rGeodeLink™ Memory Controller
■ Integrated memory controller for low latency to CPU and
on-chip peripherals
■ 64-bit wide DDR SDRAM bus operating frequency:
— 200 MHz, 400 MT/S
■ Supports unbuffered DDR DIMMS using up to 1 GB
$ T! r9 j9 \- I0 M2 l! n  NDRAM technology
3 ^! j5 L% E! C■ Supports up to 2 DIMMS (16 devices max)
2D Graphics Processor
■ High performance 2D graphics controller
( w7 a/ v! F% P- _& B■ Alpha BLT
6 L% @. k9 ?" \. Q■ Microsoft® Windows® GDI GUI acceleration:
8 E1 b) z6 N$ \' R. K5 M— Hardware support for all Microsoft RDP codes
% Z8 Y8 p8 ~" h- K. I* L■ Command buffer interface for asynchronous BLTs
■ Second pattern channel support
1 G: O7 X8 {0 m■ Hardware screen rotation

tommywgt

Display Controller
9 O$ i6 `" r/ A7 n+ A8 B, e■ Hardware frame buffer compression improves Unified
Memory Architecture (UMA) memory efficiency
■ CRT resolutions supported:
— Supports up to 1920x1440x32 bpp at 85 Hz
— Supports up to 1600x1200x32 bpp at 100 Hz
" }$ d; d1 m+ {* ?■ Supports up to 1600x1200x32 bpp at 60 Hz for TFT
2 {" N+ t( V6 L7 ?% O! I■ Standard Definition (SD) resolution for Video Output
, K& v2 h3 q! D5 H1 D2 H  O5 iPort (VOP):
— 720x482 at 59.94 Hz interlaced for NTSC
& e! A8 S+ y/ s( ]$ g— 768x576 at 50 Hz interlaced for PAL
■ High Definition (HD) resolution for Video Output Port
6 X4 Y: ]' w3 G(VOP):
— Up to 1920x1080 at 30 Hz interlaced (1080i HD)
( s6 h! ]8 `% L) q# v4 b& L(74.25 MHz)
& v6 L/ ]5 Y& h0 T— Up to 1280x720 at 60 Hz progressive (720p HD)
(74.25 MHz)
■ Supports down to 7.652 MHz Dot Clock (320x240
2 ]0 F2 t+ `) iQVGA)
! y$ r: M- I( S- j' a% K6 e1 o  s■ Hardware VGA
■ Hardware supported 48x64 32-bit cursor with alpha
blending
Video Processor
■ Supports video scaling, mixing and VOP
■ Hardware video up/down scalar
/ o* s5 L6 g1 L; V+ a3 M■ Graphics/video alpha blending and color key muxing
: k" \! I# A, F/ S. i■ Digital VOP (SD and HD) or TFT outputs
■ Legacy RGB mode
' E' r$ m; W+ x5 b" }' s6 W■ VOP supports SD and HD 480p, 480i, 720p, and 1080i
■ VESA 1.1, 2.0 and BT.601 24-bit (out only), BT.656
compliant
+ F* B1 G- u  ~% @Integrated Analog CRT DAC, System Clock PLLs and
, g1 r5 U4 r( {$ \- T1 D7 P# TDot Clock PLL
■ Integrated Dot Clock PLL with up to 350 MHz clock
■ Integrated 3x8-bit DAC with up to 350 MHz sampling
■ Integrated x86 core PLL
! _! N$ M2 X, P+ I3 S& K■ Memory PLL
GeodeLink™ PCI Bridge
1 w/ f$ |. X6 \6 `1 `1 U9 L- \■ PCI 2.2 compliant
■ 3.3V signaling and 3.3V I/Os
3 P& a! b& U, S  X0 [8 L■ 33 to 66 MHz operation
■ 32-bit interface
  z# m: }- k! t6 Y1 W■ Supports virtual PCI headers for GeodeLink devices
Video Input Port (VIP)
! L0 y- W2 g( u8 w% s■ VESA 1.1 and 2.0 compliant, 8 or 16-bit
■ Video Blanking Interval (VBI) support
1 L7 _/ }6 a: \5 E" x" h■ 8 or 16-bit 80 MHz SD or HD capable
5 {. N% b, k" c& z: Y, P0 p- eSecurity Block
* z/ c- r6 f) g( a, G9 j8 U" w■ Serial EEPROM interface for 2K bit unique ID and AES
4 p  [% t; ~& t% v/ N. i2 g(Advanced Encryption Standard) hidden key storage
(EEPROM optional inside package)
■ Electronic Code Book (ECB) or Cipher Block Chaining
(CBC)128-bit AES hardware support
; v& ~  N8 i  u2 P% F8 ~■ True random number generator (TRNG)

tommywgt

整體而言就功能而, 似乎很多, 但是週邊好少...
' L1 ?! W6 J$ C$ W& D
  O4 H0 ]" x1 ~% u6 n8 M一般常用的ATAPI, Ethernet, USB都要自己外加...

有人有用過知道價錢的嗎?

tommywgt

沒騙你的, 看一下這張表吧!

tommywgt

以這個投票而言, 比較基準可能不是那麼的好
因為intel 的celeron M跟AMD的 Geode LX 本身開發出來的目的就不同
celeron M只是一個CPU, Geode LX 本身有內建北橋跟display所以Geode LX 是為了embedded system而開發的, 威盛的Eden則是從頭至尾都是為了embedded而開發...
+ U7 I5 G2 I7 r% Y/ ~5 c) T, R此外大部分的embedded processor都很便宜, 完整度可能比這些還高, 在很多的主流市場也被大量採用, 只是設計投票項目時沒有放進來, 所以你看投票還有一個其他項目也是一堆人投...

tommywgt

給bosscck再補充一下
4 ^4 V' g5 r7 Z/ {
強不強要看整體系統的需求, 太快的速度用不著反而是一種浪費, 在embedded system中, 所謂的real time system並不是要很快的速度, 而是滿足能達到即時的速度, 在這之後, 則是功能整合度跟成本比較重要的.
8 A8 ^& j% o- u就像沒有人會把飛機的引擎拿來裝給汔車用, 這是相同的道理.
# J" F0 ?* l! z3 L6 q
( l! J. E  E1 Z: k* e" Z$ u選擇一個合適的embedded system platform也是個很重要的課題.

tommywgt

這個問題很難一言以壁之...
不像買台pc那麼容易的, 幾乎都是case by case在討論的...所以我個人覺得有個case study可能會好一點...

tommywgt

回到這個主題上, 我用過RDC的486平台, 很好用也很便宜, 給大家參考一下

tommywgt

現在的機上盒都是有特定需求或特定功能才需要的, 暫時應該是不會有通用型的才對, 以後也想不出來有什麼應用或市場也...

tommywgt

所以結論是...
還是只能針對特定應用, 要功能強大的話還是不如windflowerz 版主講的, 用電腦不就得了...是嗎?