Pci Controller; Block Diagram Of Pci Bus Controller - NEC uPD98502 User Manual

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
P C I Slave
P 2I
FIFO
C ontrol
IB U S M aster
D ata Flow
C ontrol
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CHAPTER 1 INTRODUCTION
Figure 1-9. Block Diagram of PCI Bus controller
FIFO R egisters
Preliminary User's Manual S15543EJ1V0UM
P C I
M aster
I2P
FIFO FIFO
C ontrol
IB U S S lave
P C I
A rbiter
Idle
C ontrol