Technical Information 1-7
Table 1-2 System Board Feature Components
Chip
Function
Accelerated Graphics Port Interface:
•
Complies with AGP specification
•
Supports 3.3 V AGP devices with data
transfer rates up to 532 MB/sec
•
Synchronous coupling to the host-bus
frequency
Fully-synchronous PCI bus interface:
•
Complies with PCI specification
•
PCI-to-DRAM access greater than 100
MB/sec
•
Supports five PCI bus masters in addition
to the host and PCI-to-ISA I/O bridge
•
Delayed transactions
Data Buffering:
•
Host-to-DRAM, PCI-to-DRAM, and
AGP-to-DRAM write-data buffering
•
Write-combining for host-to-PCI burst
writes
•
Supports concurrent host, PCI, and AGP
transactions to main memory
Supports system management mode (SMM)
82371AB PCI ISA IDE Xcelerator
(PIIX4)
Multifunction PCI-to-ISA bridge:
•
Supports the PCI bus at 33 MHz
•
Complies with PCI specification
•
Full ISA bus support
USB controller:
•
Two USB ports
•
Supports legacy keyboard and mouse
•
Supports UHCI Design Guide, revision 1.1
interface