Alliance's AS90L10204 is a high performance third generation HyperTransport™-to PCI/PCI-X bridge.
The AS90L10204 is capable of tunneling the data between the two HyperTransport ports or transferring the data between the HyperTransport ports and the PCI/PCI-X port. It is designed for bandwidthhungry and performance-intensive applications in computer servers, workstations, desktop PCs and embedded systems.
The AS90L10204 HT-to-PCI/PCI-X bridge expands the possibilities of today’s systems architects by providing HT-based design options never possible before. Each 8-bit HT port operates at a frequency of up to 800 MHz DDR for both transmit and receive directions and sustains a total aggregate bandwidth up to
25.6 Gbps per 8-bit bidirectional HyperTransport port. Each AS90L10204 HyperTransport port can be 2, 4, or 8 bits wide in both transmit and receive directions.
AS90L10204 supports one 64-bit, PCI/PCI-X1.0b port to connect to a variety of PCI/PCI-X based peripherals and add-on cards such as NICs, storage HBA and others. Up to 31 devices can be daisy-chained to build higher capacity systems with multiple PCI/PCI-X buses and HT-based peripherals
AS90L10204 Features:
- Two bidirectional 8-bit HyperTransport interfaces:
- Supports 200, 400, 600 and 800 MHz DDR (double data rate) for peak bandwidth of 3.2GB/s per 8-bit bidirectional HT port
- Supports dynamic frequency reprogramming
- Complies with HyperTransport 1.05 Interface Specification.
- Tunnels between the two HyperTransport interfaces.
- No protocol-induced maximum HyperTransport link length, which allows system designers to optimize speed vs. distance.
- The HT interfaces support dual-hosted chain (host CPU on each port) with the capability to transfer data from the PCI/PCI-X busto either host CPU.
- 1 x 64 bit, up to 133MHz PCI-X 1.0b with support for up to
- 66MHz PCI 2.2
- Complies with PCI Local Bus Specifications, Rev. 2.2
- Supports with parity and error checking features.
- Built-in two-level PCI arbiter with support for up to six devices
- • Can also be configured to support an external arbiter.
- 3.3 V PCI I/O with 5 V tolerant I/Os.
- Transaction forwarding for the following commands:
- • All I/O and memory commands
- • Type 1 to Type 1 configuration commands (downstream
- • Type 1 to Type 0 configuration commands (downstream
- Evaluation board available with firmware and software drivers.
- 1.8 V core, 1.2 V HT IO, 3.3 V PCI/PCI-X IO.
- JTAG port.
Applications:
- High-end computing systems
- Computer Servers
- Server clusters
- Workstations
- Desktop PCs
- Storage systems and switches (SAN, NAS, RAID, FC)
- Printing, graphics, and imaging Systems
- VPN switches and routers
- Edge and access routers
- Wireless gateways
- Voice and multimedia access gateways
- IP service switches and core routers
- Test equipment and network probes
- Embedded systems
Device Block Diagram:
System Block Diagram:
Products:
| AS90L10204-B18B-C |
- HT-to-PCI-X Bridge
- Revision B
- 1.8V Core
- 388-pin HSBGA Package
- Commercial Temperature Range
|
 |
|
