TSI382A Datasheet, PDF (1/2 Pages) Integrated Device Technology – Legacy mode support for subtractive decode

Tsi382A^™
PCI Express to PCI Bridge
Features
General
• PCI Express 1.1 to PCI bridge
• Transparent and Non-transparent
addressing modes
• Efficient queuing and buffering for low
latency and high throughput
• Legacy mode support for subtractive
decode
• 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
The Tsi382A supports Legacy mode
operation, which configures the device as a
subtractive decode PCIe-to-PCI bridge.
PCI Express
• 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
• Native Hot Plug support
PCI
• 32/64-bit addressing and 32-bit data
• Operates up to 66 MHz
• Up to eight outstanding memory reads
• PCI clock outputs for up to four devices
• Four external PCI masters supported
through internal arbiter
• 3.3V PCI I/Os, 5V tolerant
• MSI generation and handling using
interrupt and GPIO signals
The Tundra Semiconductor Tsi382A is a high-performance bus bridge that
connects PCI Express based devices to legacy PCI devices. The Tsi382A’s
PCIe Interface supports a x1 lane configuration, which enables the bridge to
offer throughput performance of up to 2.5 Gbps per transmit and receive
direction.
The device’s PCI Interface operates up to 66 MHz, and supports transparent
and non-transparent addressing. The Tsi382A supports Legacy mode
operation, which configures the device as a subtractive decode PCIe-to-PCI
bridge.
Block Diagram
Clocking/
Reset
PCIe Interface (x1)
EEPROM
Controller
Interrupt
Handling
Error
Handling
GPIO
Posted
Writer
Buffer
Posted
Queue
Non-
Posted
Buffer
Non-
Posted
Queue
Mux Logic
Downstream
Upstream
Mux Logic
Posted
Writer
Buffer
Posted
Queue
Non-
Posted
Buffer
Non-
Posted
Queue
Power
Mgmt
Config
Registers
JTAG
PCI
Arbiter
80E2010_BK001_01 (Tsi382)
PCI Interface
PCI Clock
Outputs
Smallest Footprint
The Tsi382A BGA package has the smallest footprint of any PCIe-to-PCI
device on the market. The device is offered in a 10 x 10 mm package with a
standard 0.8-mm ball pitch, making it ideal for PCI ExpressCard applications
or similar designs that have limited component space. For cost-sensitive
applications, the Tsi382A is also available in an LQFP package.
In addition, by providing sufficient clock outputs for up to four PCI devices,
board space is further reduced by eliminating the need for an external clock
buffer.
Tundra Confidential