ht-2100 Broadcom Corp., ht-2100 Datasheet - Page 2

• Manufacturer Part Number: ht-2100
• Description: Ht-2100 - Hypertransport Systemi/o Controller With Pci Express
• Manufacturer: Broadcom Corp.

The HT-2100 is targeted at the volume server and workstation market
with the capability to efficiently span from one-to-eight sockets without
incurring large latencies.
The HT-2100 is a highly-scalable SystemI/O solution for 64-bit/32-bit
processors that can be configured to meet OEMs’ needs for a variety of
product segments. The dual socket configuration shown above can be
used for mainstream tower and rack server, as well as high-end
workstations. Additional HT-2100 devices can be added to a system to
scale to larger multisocket servers.
The HT-2100 is a high-performance HyperTransport to PCIe bridge,
capable of tunneling the data between the two HyperTransport ports. The
HyperTransport tunneling enables an efficient quad-socket system as
shown above (on the right), where a base configuration can be created
with fewer devices.
The HT-2100 takes I/O bandwidth, configurability, and scalability to
unprecedented levels. The two 16x HyperTransport host ports can
operate at a frequency of 1-GHz double-data rate in both the transmit and
receive directions to aggregate up to a total bandwidth of 8 GBps. This
bandwidth is available to communicate with devices such as the
processor or a host bridge.
Likewise, the x16 downstream HyperTransport port can operate at a
frequency of 1-GHz double-data rate in both directions and aggregate up
Broadcom
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16215 Alton Parkway, P.O. Box 57013
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© 2006 by BROADCOM CORPORATION. All rights reserved.
HT-2100-PB02-R
4x SAS/SATA
®
32-bit PCI
, the pulse logo, Connecting everything
LPC/SPI
05/17/06
PCIe
HT-1100
HT-2100
8x HT
16x HT
PCIe
Processors
®
Azalia
®
, and the Connecting everything logo are among
Multiprocessing SystemI/O Configurations
PCIe
PCIe
PCIe
PCIe
PCIe
IDE
12xUSB2.0
SMBus
LPC
O V E R V I E W
to a total bandwidth of 8 GBps as well. This bandwidth is available to
communicate with HyperTransport I/O Hubs such as the HT-1000.
For low-latency, high-bandwidth I/O interconnect PCI-Express, the HT-
2100 offers an array of choices to match the bandwidth needs of the
device as well as number of devices that need to be supported on the
platform. The 24 serial links operating at 2.5 GHz can be configurable to
five PCI-E masters. Some sample configurations that are possible are
x16 + x8, x8 + x8 + x8 or x16 + x4 + x4, or x8 + x8 + x4 + x4 or x8 + x4
+ x4 + x4 + x4. Combinations of link widths that are lower than the ones
mentioned are possible. No other device in the marketplace matches this
level of flexibility for PCIe.
The HT-2100 supports the MSI mechanism for interrupts. Additionally,
it will also support the legacy mechanism by virtualizing the PCI INTx
interrupts. The incoming MSIs from PCIe are sent upwards by mapping
them to HyperTransport Interrupt packets.
Multiple HT-2100 devices can be used to scale out the system in terms
of processors and I/O connectivity for building higher-end
multiprocessor systems.
The high levels of integration, enterprise server features, the I/O
flexibility, and device scalability make the HT-2100 the best-in-class
SystemI/O solution in the market for building the servers.
24x PCIe
4x SAS/SATA
32-bit PCI
LPC/SPI
PCIe
HT-1100
HT-2100
8x HT
PCIe
16x HT
Azalia
Processors
12xUSB2.0
IDE
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
Web: www.broadcom.com
LPC
SMBus
HT-2100
16x HT
24x PCIe