1. Functional Description
23
Tsi308 User Manual
80D4000_MA001_02
Tundra Semiconductor Corporation
www.tundra.com
1.2
Features
The following sections describe the features of Tsi308.
1.2.1
General features
•
Two Bidirectional 8-bit HyperTransport
™
interfaces
— Up to 600MHz DDR (Double Data Rate) for peak bandwidth of 1200 MB/s
simultaneously in each direction
•
Complies with Revision 1.05 of HyperTransport
™
I/O Link Specification
— Maximum link width supported is only 8-bits
— Supports asymmetric link widths and frequencies
•
Tunnels between the two HyperTransport
™
interfaces
•
Can be configured as single-ended cave device with only one link active
•
The HT interfaces support double hosted chain (Host CPU on each port)
•
Single 64-bit PCI-X bus or two 32-bit PCI-X buses
— Device emulates two HT link devices (with virtual internal tunnel in dual PCI-X mode)
— Implements two independent sets of CSRs in dual PCI-X mode
— PCI-X bus can also operate in traditional PCI mode
— Operating frequencies and mode of the two PCI-X buses are independently selectable
— Supports 50, 66, 100 and 133 MHZ in PCI-X mode
— Supports 25, 33, 50 and 66 MHZ in PCI mode
— PCI-X mode complies to Revision 1.0b of PCI-X Addendum to the PCI Local Bus
Specification
— PCI mode complies to Revision 2.2 of PCI Local Bus Specification
•
Supports Tsi301 software backward compatibility mode through hardware strap setting
•
Supports daisy-chaining up to 31 devices. The bandwidth is shared among the devices
using a fairness algorithm
•
Programmable interrupt controller with up to 10 interrupts per PCI-X port
•
Built-in 2-level PCI-X arbiter with support for up to 6 devices
— Also supports external arbiter
•
Transaction forwarding for the following commands
— All I/O and memory commands
— Type 1 to Type 1 configuration commands (downstream only)
Содержание TSI308
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Страница 260: ...Index 260 Tsi308 User Manual 80D4000_MA001_02 Tundra Semiconductor Corporation www tundra com ...