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Texas Instruments 4Q 2006 Interface Selection Guide
Design Considerations
Peripheral Component Interconnect (PCI) is
an interconnection system between a micro-
processor and attached devices in which
expansion slots are spaced closely for high-
speed operation. A PCI-to-PCI bridge is a
high-performance connection path between
two PCI buses that allows bridge transactions
to occur concurrently on both buses. Burst-
mode transfers maximize data throughput
while the two bus traffic paths through the
bridge act independently. In future systems,
many PCI bus structures will be replaced by
T
echnical Information
C
apabilities
• TI’s PCI2050B is a 32-bit, 66-MHz bridge
w
ith internal two-tier arbitration for up to
9 secondary bus masters and support for
an external secondary bus. There are
independent read/write buffers for each
direction and 10 secondary PCI clock outputs.
Functionality
• The PCI2250 is a 33-MHz bridge similar to
the PCI2050B but supports 4 secondary bus
masters and 5 secondary PCI clock outputs.
PCI Bridges
PCI2040
PCI2050B
PCI2250
PCI2060
PCI bridge family of products.
t
he new serial PCI Express architecture. TI is
actively developing a portfolio of PCI Express
p
roducts to address this new market.
Key Features
• Two 32-bit, 33- or 66-MHz buses
• Configurable for PCI power-management
interface specification
• CompactPCI hot-swap functionality
• 3.3-V core logic with 3.3- to 5-V PCI
signaling compatibility
• Intel
®
bridge compatibility
• Transparent bridging
Literature Number
Description
Application Notes
SCPA029A Adding Debounce Logic to /HSSwitch Terminal
SLLA067 Comparing Bus Solutions
SCPA027 Connecting ENUM Terminal to an External Open-Drain Buffer
SCPA030
Interfacing the PCI2040 to the TMS320VC5420 DSP
SPRA679 Texas Instruments TMS320VC5409/5421 DSP to PCI Bus
Resources For a complete list of resources (evaluation modules, data sheets and application notes), visit interface.ti.com
Intel-Compatible Speed Expansion MicroStar BGA™ Voltage
Device Part No. (MHz) Interface (bits) Hot-Swap Packaging (V) Package(s) Description Price
*
PCI Bridges
PCI2040 — 33 — — Yes 3.3, 5 144 BGA, PCI-to-DSP bridge controller, compliant with 10.55
144 LQFP Compact PCI Hot-Swap Specification 1.00
PCI2050B 21150bc 66 32 Yes Yes 3.3, 5 208 LQFP, 32-bit, 66-MHz, 9-master PCI-to-PCI bridge 9.50
208 QFP, 257 BGA
PCI2250 21152ab 33 32 Friendly No 3.3, 5 176 LQFP, 32-bit, 33-MHz PCI-to-PCI bridge, Compact 6.10
160 QFP PCI hot-swap friendly, 4-master
PCI2060 — 66 32 Yes Yes 3.3, 5 257 BGA 32-bit, 66-MHz, 9-master, asynchronous 9.50
PCI-to-PCI bridge
1
Suggested resale price in U.S. dollars in quantities of 1,000.
Selection Guide
Typical PCI-to-PCI bridge system application.
PCI Option Card
CPU
M
emory
Host
Bridge
PCI2050B
P
CI Bus 0
PCI Bus 1
Host Bus
PCI Option Slot
PCI2050B
PCI
Device
PCI
Device
PCI
Device
PCI
Device
PCI Bus 2
(Option)
PCI Option Card
PCI Bridges
33
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