Chapter 8: PCI Flashcards
What is the standard PCI bus Speed
8.1 pg 146 [178]
33 MHz or 66 MHz clock
What is the Standard PCI throughput?
Class Notes
bus theoretical throughput is 132MB/s to 528MB/s
What is the Actual PCI Bus throughput?
Class Notes
around 75% or 100MB/s to 398MB/s
What is a PCI Device called
Class Notes
An Agent
Agent that initiates a transfer is called?
Class Notes
initiator
responding agents are called?
Class Notes
Target
A basic data transfer operation on the PCI bus is called?
8.1 pg 146 [178]
PCI transaction
What are 6 things that PCI transactions creates
8.1 pg 146 [178]
- Requests
- Arbitration
- Grants
- Address
- turnaround
- data transfer phases
What does a Turnaround phase allow?
Class Notes
allows the address lines to be switched from address mode to data mode
All PCI operations are referenced from?
Class Notes
Memory
What does PCI-X Support?
Class Notes
64 and 32 bits
PCI-X Clock must scale to ?
Class Notes
slowest PCI device
What are the Three [3] common PCi-X Speed
- 66MHz and 133MHz
- 133MHz DDR and 133MHz QDR
- 533MHz is also possible
PCI-X was developed to satisfy the increased requirements of I/O adapters such as?
8.1 pg 146 [178]
Gigabit Ethernet, Fibre Channel, and Ultra320 SCSI.
What is Quad Data Rate?
signaling technique wherein data are transmitted at four points in the clock cycle: on the rising and falling edges, and at two intermediate points between them.
