NEC Network Controller uPD98502 - Manual (Page 32)

CHAPTER 1 INTRODUCTION
32 Preliminary User’s Manual S15543EJ1V0UM
1.5.7 PCI controller
PCI Controller provides PCI Bus function defined by PCI SIG. This block is bridging between IBUS and PCI.
Features of PCI Controller are as follows;
• 32-bit PCI Interface (up to 33 MHz)
• 32-bit IBUS Interface (up to 33 MHz)
• Supports PCI Dual Address Cycle as master
• 33-MHz-PCI-frequency capable
• Compliant to PCI Local Bus Specification Rev. 2.2
• Compliant to PCI Bus Power Management Interface Rev. 1.1
• Supports up to 16 words burst for each directions
• Implements PCI bus arbiter that supports up to 4 external PCI-master devices at Host-mode
Figure 1-9. Block Diagram of PCI Bus controller
P C I S lave
IB U S M aster
P C I
M aster
IB U S S lave
R egisters F IF O F IF O F IF O F IF O
P 2I
C ontrol
I2P
C ontrol
D ata F low
C ontrol
P C I
A rbiter
Idle
C ontrol