Motore di ricerca datesheet componenti elettronici
  Italian  ▼
ALLDATASHEETIT.COM

X  

Preview PDF HTML

ST486DX Scheda tecnica(PDF) 2 Page - STMicroelectronics

Il numero della parte ST486DX
Spiegazioni elettronici  PROGRAMMING MANUAL
PDF  34 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST486DX Scheda tecnica(HTML) 2 Page - STMicroelectronics

  ST486DX Datasheet HTML 1Page - STMicroelectronics ST486DX Datasheet HTML 2Page - STMicroelectronics ST486DX Datasheet HTML 3Page - STMicroelectronics ST486DX Datasheet HTML 4Page - STMicroelectronics ST486DX Datasheet HTML 5Page - STMicroelectronics ST486DX Datasheet HTML 6Page - STMicroelectronics ST486DX Datasheet HTML 7Page - STMicroelectronics ST486DX Datasheet HTML 8Page - STMicroelectronics ST486DX Datasheet HTML 9Page - STMicroelectronics Next Button
Zoom Inzoom in Zoom Outzoom out
 2 / 34 page
background image
1.
SMM OVERVIEW
Pages
9
1.1 Introduction . . .... . ... ... .. . . . ... . ... .. ... .... . ... ... .. . . .
9
1.2 SGS Thomson SMM Features . . . . . . . . . . . . . . . . . . . . . . . . .... . . . . ... .
9
1.3 A Typical SMM Routine . . . . . . . . . . . . . . . . . . . . . . . . . .... ... . . . . . . . 10
2.
SGS THOMSON SMM IMPLEMENTATION
13
2.1 Hardware Background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... ... .. ... 13
2.2 Configuration Control Registers . . . . . . . . . . . . ... ... .. ... ... .. . . . ... . 14
2.3 SMM Instruction Summary . . . . . . . . . . . . . . . . . . . ... ... .. ... ... .. . . . 18
3. SMM SOFTWARE CONSIDERATIONS
23
3.1 Enabling SMM . . . . . ... ... .. ... ... .. . . . ... . ... . . ... ... .. ... 23
3.2 SMM Handler Entry State . . . . . . . . . . . . . . . . . . . . . . .... . . . . ... . ... . 24
3.3 Maintaining the CPU State . . . . . . . . . . . . . . . ... ... .. ... ... .. . . . ... . 28
3.4 Initializing the SMM Environment . . . . . . . . . . . . . . . . . . . . . . . . .... ... . . . 31
3.5 Accessing Main Memory Overlapped by SMM Memory . . . . . . . ... ... .. ... ... . 32
3.6 I/O Restart
. . . . . . . . . . . . . . . . . . . . . . .... . . . . ... . ... . ... . ... . 33
3.7 I/O Port Shadowing and Emulation
. . . . . . . . . . . . . . . . . . . . . . . . . .... . ... 34
3.8 Return to HLT Instruction . . . . . . . . . . . . . . . . . . . . . . .... . . . . ... . ... . 35
3.9 Exiting the SMI Handler . . . .... . ... ... .. . . . ... . ... .. ... .... . . . . 37
3.10 Testing and Debugging SMM Code . . . .... ... . . . . . . . . . . . . . ... . ... . . . 38
4.
POWER MANAGEMENT FEATURES
41
4.1 Reducing the Clock Frequency . . . . . . . . . . . . . ... ... .. ... ... .. . . . ... . 41
4.2 Lowering the CPU Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . ... ... .. ... 41
4.3 Suspend Mode . . . . .... . ... ... .. . . . ... . ... .. ... .... . ... ... . 42
Appendix A
Assembler Macros for SGS Thomson Instructions
45
GENERAL INDEX
5



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34


Scheda tecnica Scarica

Go To PDF Page


Link URL



Lei ha avuto il aiuto da alldatasheet?  [ DONATE ] 

Di alldatasheet   |   Richest di pubblicita   |   contatti   |   Privacy Policy   |   Collegamento alla scheda tecnica    |   scambio Link   |   Ricerca produttore
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com