PI7C7100 Ver la hoja de datos (PDF) - Pericom Semiconductor

Número de pieza

componentes Descripción

Fabricante

PI7C7100

3 Port PCI-to-PCI Bridge

Pericom Semiconductor 

PI7C7100

111222333444555666777888999000111222333444555666777888999000111222333444555666777888999000111222111222333444555666777888999000111222333444555666777888999000111222333444555666777888999000111222111222333444555666777888999000111222333444555666777888999000111222333444555666777888999000111222111222333444555666777888999000111222333444555666777888999000111222333444555666777888999000111222111222333444555666777888999000111222

3 Port PCI-to-PCI Bridge

Datasheet Brief

Product Features

• All three ports compliant with the PCI Local Bus

Specification, Revision 2.1

• Compliant with PCI-to-PCI Bridge Architecture Specification,

Revision 1.0

• 32-Bit Primary and two Secondary Ports

• Circular-Delta Bus Architecture

• Concurrent primary to secondary bus operation and indepen-

dent intra-secondary port channel to reduce traffic on the

primary port

• Provides arbitration for two sets of 8 secondary bus masters

– Programmable 2-level priority arbiters

– Disable control for use of external arbiter

• Support PCI transactions for:

– All I/O and memory commands

– Type 1 to Type 0 configuration conversion

(downstream only)

– Type 1 to Type 1 configuration forwarding

– Type 1 to special cycle configuration conversion

• Supports posted memory write buffers in all directions

• Implements delayed transactions for all PCI configuration,

I/O and memory read commands

• Supports positive medium decoding

• Enhanced address decoding

– 32-Bit I/O address range

– 32-Bit memory-mapped I/O address range

– VGA addressing and VGA palette snooping

– ISA-aware mode for legacy support in the first 64KB of

I/O address range

• IEEE 1149.1 JTAG interface support

• Full scan support

• 3.3V core logic with 5V tolerant 3.3V PCI signaling interface

• 256-pin plastic PBGA package (NA256)

• Supports system transaction ordering rules

• Hot-Plug "Ready"

Product Description

Pericom’s PI7C7100 is the first triple port PCI-to-PCI Bridge

device designed to be fully compliant with the 32-Bit, 33 MHz

implementation of the PCI Local Bus Specification, Revision 2.1.

The PI7C7100 supports synchronous bus transactions between

devices on the primary bus and the secondary buses both

operating at 33 MHz. The primary and the secondary buses can

also operate in concurrent mode, resulting in additional increase

in system performance. Concurrent bus operation offloads and

isolates unnecessary traffic from the primary bus; thereby

enabling a master and a target device on the same secondary PCI

bus to communicate even while the primary bus is busy.

Product Benefits

• Triple port PCI-to-PCI Bridge increases the number of PCI slots

that can be supported in a system.

• Single PI7C7100 device instead of two PCI-to-PCI Bridge

devices conserves board real estate and provides one less

device load on the primary bus.

• Concurrent and intra-secondary bus communication increases

overall system performance by reducing bus traffic on the

primary bus. Devices on secondary busses can independently

communicate while the primary bus is busy.

• Integrated two-level programmable arbiter support for up to 8

devices on each secondary bus maximizes master device

control. The internal arbiter can be bypassed with an external

arbiter for custom applications.

• Synchronous clock operation on the primary and secondary

busses

• Enhanced PCI bridge performance and efficiency through

support for delayed transactions.

1

PXXXX 06/01/00

Share Link: