American Megatrends Apollo User Manual page 18

American megatrends apollo motherboards: user guide
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PCI,
Continued
PCI Features
PCI:
is processor-independent,
has a multiplexed address, command, and data bus and supports burst mode operation on reads and
writes,
runs synchronous with the CPU at speeds up to 33 MHz,
has a maximum data transfer rate of 120 MBs (with a peak rate of 132 MBs on a 32-bit data path),
has low latency for random accesses (about 60 ns write access latency) to slave registers from a PCI bus
master on the PCI bus,
is capable of full concurrency with the processor and PCI bus masters,
has full multimaster capability, allowing any PCI Master peer-to-peer access to any PCI slave,
has hidden and overlapped central arbitration,
has a low pin count (master - 47; slave - 45),
has address and data parity, and
uses three physical address spaces: 32-bit memory, 32-bit I/O, and a 256 byte-per-agent configuration
space.
12
Apollo Motherboard User's Guide
Cont'd

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