Tsi384™
PCI Express to PCI/X Bridge
The Tundra Semiconductor Tsi384 is a high-performance bus bridge that
connects the PCI Express (PCIe) protocol to the PCI and PCI-X bus standards.
Features
General
• PCI Express to PCI/PCI-X Forward bridge
• Transparent, Non-transparent, and
Opaque modes
• Low latency – Superior queuing and
buffering architecture maximize
throughput and minimize latency
The Tsi384’s PCIe Interface has superior performance and supports 1, 2, or 4
lanes. This enables the bridge to offer exceptional throughput performance
of up to 1 GBps.
The device’s PCI/X Interface can operate up to 133 MHz in PCI-X mode, or up
to 66 MHz in PCI mode. This interface offers designers extensive flexibility by
supporting three types of addressing modes: transparent, opaque, and
non-transparent.
• Compliant with the following
specifications:
Block Diagram
– 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
Clocking/
Reset
EEPROM
Controller
PCIe Interface (x4)
– PCI-X 2.0 (mode 1 only)
– PCI Bus Power Management
Interface 1.2
Posted
Writer
Buffer
Upstream
Mux Logic
Posted
PCI Express
Queue
• Configurable as 1, 2, or 4 lanes
• 512-byte maximum payload
• Advanced error reporting capability
• Supports Lane Reversal and Lane
Polarity Inversion
Interrupt
Handling
Power
Mgmt
Non-
Posted
Buffer
Non-
Posted
Queue
Posted
Posted
Queue
Writer
Buffer
Config
Registers
Error
Handling
Mux Logic
• End-to-end CRC check and generation
• Up to four outstanding memory reads
Non-
Posted
Buffer
Non-
Posted
Queue
Downstream
• ASPM L0s link state power
management
• Legacy interrupt signaling and MSI
interrupts
PCI/X
Arbiter
• Hot Plug support
PCI/X Interface
JTAG
PCI/PCI-X
80E1000_BK001_01 (Tsi384)
• 32/64-bit addressing
• 32/64-bit data
• PCI-X operation at 50, 66, 100, and
133 MHz
• PCI operation at 25, 33, 50, and
66 MHz
• Up to eight outstanding memory reads
• 4K read completion buffer
Low Power Consumption
The Tsi384 has typical power consumption of 1.3W, and incorporates
advanced power management to minimize power consumption during
operation. In addition to supporting D0, D3 hot, and D3 cold power
management modes, the device permits unused PCIe lanes to be powered
off automatically or by configuration.
• Four external PCI/X masters supported
through internal arbiter
• Support for external arbiter
• 3.3V PCI/X I/Os