®
DEVICE SPECIFICATION
DEVICE SPECIFICATION
PCI CONTROLLER
S5933
S5933
PCI CONTROLLER
2.0 ARCHITECTURAL OVERVIEW
S5933’s major features:
•
•
Processor independence
INTRODUCTION TO THE PCI LOCAL BUS
Support for autoconfiguration, using a compre-
hensive set of standard configuration functions
The local bus concept was developed to break the
PC data bottleneck. Traditional PC bus architectures
are inadequate to meet the demands of today’s
graphics-oriented systems and large application
sizes. A local bus moves peripherals off the I/O bus
and places them closer to the system’s processor
bus, providing faster data transfer between the pro-
cessor and peripherals.
•
•
•
Multiplexed, burst mode operation
Synchronous up to 33 MHz
Full multimaster capability, allowing any PCI
master peer-to-peer access to any PCI slave
•
•
•
•
Hidden central arbitration
The PCI Local Bus addresses the industry’s need for
a local bus standard that is not directly dependent on
the speed and size of the processor bus, and that is
both reliable and expandable. It represents the first
time in the history of the PC industry that a common
bus, independent of microprocessor design and
manufacturer, has been adopted and used by rival
PC computer architectures. PCI offers simple “plug
and play” capability for the end user, and its perfor-
mance is more than adequate for the most demand-
ing applications, such as full-motion video.
Address and data parity
Low pin count for cost-effective packaging
Three physical address spaces: memory, I/O,
and configuration
•
Capability of full concurrency with processor/
memory subsystem
•
•
Support for memory read multiple
160 PQFP and 208 TQFP package options
Figure 2-1. S5933 Block Diagram
ADDRESS
PASS THRU ADDRESS
LATCH
WRITE
READ
PCI
BUS
ADD-ON
INTERFACE
ADDR
PASS THRU DATA
SELECT &
CONTROL
DECODER
MAILBOXES
BUFFER
FIFO
PROGRAM–
MABLE
DECODER
MUX/
DEMUX
DATA BUS
BUFFERS & LATCHES
8/16
32
CONFIG.
REGS
WRITE
READ
STATUS &
INTERRUPT
CONTROL
PCI Transfer Counters
BIOS ROM INTERFACE
Applied Micro Circuits Corporation
6195 Lusk Blvd., San Diego, CA 92121 • (619) 450-9333
2-3
AMCC [ APPLIED MICRO CIRCUITS CORPORATION ]
