Tsi381
™
PCI Express to PCI Bridge
Features
General
• PCI Express to PCI bridge
• Transparent, Non-transparent and
Opaque modes
• Efficient queuing and buffering for low
latency and high throughput
• Compliant with the following
specifications:
– PCI Express Base 1.1
– PCI Express PCI/PCI-X Bridge 1.0
– PCI-to-PCI Bridge Architecture 1.2
– PCI Local Bus 3.0
– PCI Bus Power Mgt. Interface 1.2
PCI Express
The Tundra Semiconductor Tsi381 is a high-performance bus bridge that
connects the PCI Express protocol to the PCI bus standard. The Tsi381’s
PCIe Interface supports a x1 lane PCIe configuration, which enables the
bridge to offer exceptional throughput performance of up to 2.5 Gbps per
transmit and receive direction.
The device’s PCI Interface can operate up to 66 MHz. This interface offers
designers extensive flexibility by supporting three types of addressing modes:
transparent, opaque, and non-transparent.
Block Diagram
Clocking/
Reset
PCIe Interface (x1)
EEPROM
Controller
x1 lane PCIe Interface
Advanced error reporting capability
End-to-end CRC check and generation
Up to four outstanding memory reads
ASPM L0 link state power management
Legacy interrupt signaling and MSI
interrupts
• Hot Plug support
PCI
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Interrupt
Handling
Posted
Writer
Buffer
Non-
Posted
Buffer
Posted
Queue
Non-
Posted
Queue
Upstream
Mux Logic
Power
Mgmt
Error
Handling
Mux Logic
GPIO
Downstream
Posted
Writer
Buffer
Non-
Posted
Buffer
Posted
Queue
Non-
Posted
Queue
Config
Registers
32/64-bit addressing and 32-bit data
Operates at 25, 33, 50, and 66 MHz
Up to eight outstanding memory reads
3.3V PCI I/Os, 5V tolerant
Four external PCI masters supported
through internal arbiter
• MSI generation and handling using
interrupt and GPIO signals
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PCI
Arbiter
PCI Interface
JTAG
80E2000_BK001_03 (Tsi381)
Simplest, Low-Risk Design
The Tsi381 simplifies board design by using only two power supplies with no
power sequencing constraints. Its package is designed to simplify board
layout for high reliability and signal integrity. A comprehensive suite of
design support resources are also available to aid designers.
Pin compatibility with the PLX PEX8111 and PEX8112 make it easy for
designers to migrate current designs to the Tsi381, and thereby bring them
to market quickly and with low risk.
Tsi381
PCI Express to PCI Bridge
Other Features
High Performance
• Masquerade mode
• JTAG IEEE 1149.1, 1149.6 to allow
testing of the PCIe Interface
• Four GPIO pins and four interrupt pins
that can generate MSIs
• D0, D3 hot, D3 cold power
management state support
• 1.2V core power supply
• No power sequencing constraints
• Packaging:
– 13x13 mm, 144-pin PBGA
(10x10 mm option is available;
part number Tsi382)
– Pinout and footprint compatible with
PLX PEX 8111/8112
– Industrial temperature operating
range
– RoHS-compliant package available
In addition to low-latency operation and high throughput, the Tsi381
incorporates performance enhancing features, such as short-term caching,
that can provide a significant performance boost in many applications.
Transparent, Non-transparent, and Opaque Bridging
Transparent mode operation is available for efficient, flow through
configurations, while non-transparent bridging allows isolation between the
Tsi381’s PCIe and PCI domains. Non-transparent bridging also enables
multi-host systems and is used in applications such as intelligent adapter
cards. Opaque mode provides semi-transparent operation for
multi-processor configurations and enhanced private device support.
Typical Applications
The Tsi381 is suited to applications that need to bridge PCIe to downstream
PCI devices. Its flexibility, high performance, small footprint, and low power
consumption, make it ideal for a wide range of applications, including:
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Digital video recorders
Motherboards (server, SBC, industrial PC)
PC adapter cards (communications, graphics, imaging, and multimedia)
Multifunction printers
Line cards and NICs
Benefits
• Compliance to PCIe base 1.1
specification for new designs and
interoperability with new devices and
operating systems
• Enhances system performance by
delivering high throughput and low
latency across bus interfaces
• Simplifies system design, thereby
minimizing risk and development costs
PC Digital Video Recorder Card Application
Camera
Camera
Camera
Camera
Video
Decoder
Video
Decoder
Video
Decoder
Video
Decoder
PCI Bus
Design Support
Resources
T
undra i
s committed to helping customers
minimize their time to market. That’s why
we provide one of the highest levels of
design support in the industry, including:
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Application notes
Evaluation boards
IC models
Hardware and software development
tools
Tsi381
80E2000_TA002_01
x1 PCIe
Part Numbers
• Tsi381-66IL, Industrial
• Tsi381-66ILV, Industrial, RoHS compliant
Tundra Semiconductor Corporation
603 March Road, Ottawa,
Ontario, Canada, K2K 2M5
Phone: +1 613-592-0714 Toll-free: 800-267-7231
Fax: +1 613-592-1320 Email: info@tundra.com
Document: 80E2000_FB001_06
©2008 Tundra Semiconductor Corporation
All trademarks are property of their respective
owners. Information is subject to change
without notice.
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