 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
CS5535-UDC Datasheet(PDF) 50 Page - National Semiconductor (TI) |
|
|
|
|||||||||||||||||||||||||||||
CS5535-UDC Datasheet(HTML) 50 Page - National Semiconductor (TI) |
|
|
50 / 555 page  www.national.com 50 Revision 0.8 3.0 Global Concepts and Features 3.1 GEODELINK ARCHITECTURE OVERVIEW The information in this section provides a basic under- standing of the architecture used to internally connect GeodeLink Devices. The actual existence of architecture is generally invisible to the user and the system programmer. National Semiconductor Core BIOS software provides all GeodeLink initialization and support, including related Model Specific Registers (MSRs). Additionally, this soft- ware provides a Virtual PCI Configuration Space that abstracts the architecture to industry standard interfaces. From this interface, all GeodeLink devices appear in one PCI multi-function configuration space header on the exter- nal PCI bus. 3.1.1 Introduction This component is based on the GeodeLink packet archi- tecture. It consists of a set of GeodeLink Devices (GLDs) and a GeodeLink Control Processor (GLCP) connected through the GeodeLink Interface Unit (GLIU). A simplified view of a GLIU connected with three generic GLDs is illustrated in Figure 3-1. The following points are relevant: • All outputs from a GLD to the GLIU are registered. • All outputs from the GLIU to a GLD are registered. Furthermore, there are dedicated output registers for each GLD. • GLD inputs from the GLIU need not be registered but they are buffered at the interface. • All connections between the GLDs and GLIU are dedi- cated point-to-point connections with one source and one load. There are no TRI-STATE buses. • The GLIU itself is a GLD and is always Port 0. The GLIU implements the “bus”. Transactions between GLDs and GLIUs are conducted with packets. The GLIU accepts request packets from masters and routes them to slaves. Similarly, slave response packets are routed back to the master. The bus is non-blocking. Several requests can be pending but order is guaranteed. Broadcasts are not allowed. All packets have one source and one destina- tion. 3.1.2 Routing The Physical To Device (P2D) descriptors control the rout- ing of the packets. The descriptors are initialized by soft- ware at system setup. They establish the address map to be used by the system. They associate a memory or I/O address range with a GLIU port. Figure 3-1. Simplified GLIU with Generic GeodeLink Devices RO RO RO HS HS HS DO DO DO GLD1 GLD2 GLD3 P2D ARB Data Mux GLIU RI RI RI DI DI DI RO - Request Out DO - Data Out RI - Request In DI - Data In HS - Handshake P2D - Physical to Device Descriptors ARB - Arbiter |
Similar Part No. - CS5535-UDC |
|
Similar Description - CS5535-UDC |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| 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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
