Masterclock D232 Datový list Strana 31

  • Stažení
  • Přidat do mých příruček
  • Tisk
  • Strana
    / 240
  • Tabulka s obsahem
  • KNIHY
  • Hodnocené. / 5. Na základě hodnocení zákazníků
Zobrazit stránku 30
Intel
®
E8870 Scalable Node Controller (SNC) Datasheet 3-1
Configuration Registers 3
3.1 Access Mechanisms
The SNC configuration registers can be accessed from the following sources:
Configuration Read and Write from either scalability port (SP)
System Management Bus (SMBus)
JTAG
:
3.2 SNC Fixed Memory Mapped Registers
These registers are mapped into the SNC Memory Mapped Configuration Register Range shown
in Table 4-6, Address Disposition for Processor. These appear at fixed addresses to support the
boot process. These registers also appear in the SNC configuration space. This mechanism is
independent of the more general Memory Mapped Configuration mechanism.
Table 3-1. Register Attributes Definitions
Attribute
Abbrevi-
ation
Description
Read Only RO
The bit is set by the hardware only and software can only read the bit.
Writes to the register have no effect. A hard reset will set the bit to its default
value.
Read/Write RW
The bit can be read and written by software. A hard reset will set the bit to its
default value.
Read/Write
Once
RWO
The bit can be read by software. It can also be written by software but the
hardware prevents writing it more than once without a prior reset. Since the
smallest register access is one byte, this protection applies on a byte-by-
byte basis. That is, if only one byte of a field is written, only that byte will be
locked. The other byte has separate write protection.
Read/Clear RC
The bit can be either read or cleared by software. In order to clear an RC bit,
the software must write a one to it. Writing a zero to an RC bit will have no
effect. A hard reset will set the bit to its default value.
Sticky
RWS, RCS,
ROS
The bit is sticky or unchanged by a hard reset. Read/Write, Read/Clear,
and Read Only bits may be sticky. These bits are only reset with
PWRGOOD.
Reserved RV
This bit is reserved for future expansion and must not be written. The PCI
Local Bus Specification, Revision 2.2 requires that reserved bits must be
preserved. Any software that modifies a register that contains a reserved bit
is responsible for reading the register, modifying the desired bits, and writing
back the result.
Unique *
Any attribute with an asterisk (*) suffix indicates an unique behavior. Please
consult the associated description for details.
Zobrazit stránku 30
1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 239 240

Komentáře k této Příručce

Žádné komentáře

Apple AppleWorks Quick Reference: Mac OS manuels

Manuels d'utilisation et guides de l'utilisateur pour Logiciel Apple AppleWorks Quick Reference: Mac OS.
Nous fournissons des manuels en pdf 1 Apple AppleWorks Quick Reference: Mac OS à télécharger gratuitement par type de document : Manuel de l'utilisateur






Plus de produits et de manuels pour Logiciel Apple

Modèles Type de document
MainStage 3 Manuel de l'utilisateur   Apple MainStage 3 Manuel d'utilisation, 154 pages
Pages 2 Manuel de l'utilisateur   Apple Pages 2 Benutzerhandbuch, 292 pages
Pages Manuel de l'utilisateur   Apple Pages Manuale d'uso, 196 pages
Qmaster 2 and Compressor 2 (Distributed Processing Manuel de l'utilisateur   Apple Qmaster 2 and Compressor 2 (Distributed Processing Setup) User Manual, 74 pages
Logic Pro 8 Getting Started Manuel de l'utilisateur   Apple Logic Pro 8 Getting Started User Manual, 111 pages
Boot Camp MacBook Air (Late 2010) Manuel de l'utilisateur   Apple Boot Camp MacBook Air (Late 2010) Benutzerhandbuch, 14 pages
iMovie HD 6 Manuel de l'utilisateur   Apple iMovie HD 6 User Manual, 47 pages
Keynote 1 Manuel de l'utilisateur   Apple Keynote 1 Benutzerhandbuch, 120 pages
Shake (Qmaster 1.2) Distributed Rendering (10.3) Manuel de l'utilisateur   Apple Shake (Qmaster 1.2) Distributed Rendering (10.3) User Manual, 18 pages
iDVD at a Glance Manuel de l'utilisateur   Apple iDVD at a Glance User Manual, 10 pages
Xsan (upgrading to Xsan 1.4) Manuel de l'utilisateur   Apple Xsan (upgrading to Xsan 1.4) User Manual, 24 pages
Numbers '08 Manuel de l'utilisateur   Apple Numbers '08 User Manual, 295 pages
Xserve Intel (Late 2006) DIY Procedure for Rear ID Manuel de l'utilisateur   Apple Xserve Intel (Late 2006) DIY Procedure for Rear ID Tab User Manual, 22 pages
MainStage 3 Manuel de l'utilisateur   Apple MainStage 3 Manual del usuario, 162 pages
iPhoto '08 Manuel de l'utilisateur   Apple iPhoto '08 Manual del usuario, 22 pages
Numbers '09 Manuel de l'utilisateur   Apple Numbers '09 Manuel d'utilisation, 288 pages
AppleShare 3.0 Manuel de l'utilisateur   Apple AppleShare 3.0 User Manual, 20 pages
QuickTime 7.2 Manuel de l'utilisateur   Apple QuickTime 7.2 Benutzerhandbuch, 73 pages
Installing Your Motion 2 Software Manuel de l'utilisateur   Apple Installing Your Motion 2 Software User Manual, 8 pages
Compressor (4.1.2) Manuel de l'utilisateur   Apple Compressor (4.1.2) User Manual, 108 pages