89HPES24T3G2ZBALG8

1 of 2 October 18, 2007
© 2007 Integrated Device Technology, Inc.
IDT and the IDT logo are registered trademarks of Integrated Device Technology, Inc.
®
Device Overview
The 89HPES24T3G2 is a member of IDT’s PRECISE™ family of PCI
Express® switching solutions. The PES24T3G2 is a 24-lane, 3-port
Gen2 peripheral chip that performs PCI Express base switching with a
feature set optimized for high performance applications such as servers,
storage, and communications systems. It provides connectivity and
switching functions between a PCI Express upstream port and two
downstream ports and supports switching between downstream ports.
Features
High Performance PCI Express Switch
Twenty-four 5 Gbps Gen2 PCI Express lanes supporting
5 Gbps and 2.5 Gbps operation
Up to three switch ports
Support for Max Payload Size up to 2048 bytes
Supports one virtual channel and eight traffic classes
Fully compliant with PCI Express base specification Revision
2.0
Flexible Architecture with Numerous Configuration Options
Automatic per port link width negotiation to x8, x4, x2, or x1
Automatic lane reversal on all ports
Automatic polarity inversion
Supports in-band hot-plug presence detect capability
Supports external signal for hot plug event notification allowing
SCI/SMI generation for legacy operating systems
Dynamic link width reconfiguration for power/performance
optimization
Configurable downstream port PCI-to-PCI bridge device
numbering
Crosslink support
Supports ARI forwarding defined in the Alternative Routing-ID
Interpretation (ARI) ECN for virtualized and non-virtualized
environments
Ability to load device configuration from serial EEPROM
Legacy Support
PCI compatible INTx emulation
Supports bus locked transactions, allowing use of PCI Express
with legacy software
Highly Integrated Solution
Requires no external components
Incorporates on-chip internal memory for packet buffering and
queueing
Integrates twenty-four 5 Gbps / 2.5 Gbps embedded SerDes,
8B/10B encoder/decoder (no separate transceivers needed)
Reliability, Availability, and Serviceability (RAS) Features
Ability to disable peer-to-peer communications
Supports ECRC and Advanced Error Reporting
All internal data and control RAMs are SECDED ECC
protected
Supports PCI Express hot-plug on all downstream ports
Supports upstream port hot-plug
Block Diagram
SerDes
Phy
Logical
Layer
SerDes
Phy
Logical
Layer
SerDes
Phy
Logical
Layer
...
Multiplexer / Demultiplexer
3-Port Switch Core / 24 Gen2 PCI Express Lanes
Frame Buffer Route Table
Port
Arbitration
Scheduler
Transaction Layer
Data Link Layer
SerDes
Phy
Logical
Layer
SerDes
Phy
Logical
Layer
SerDes
Phy
Logical
Layer
...
Multiplexer / Demultiplexer
Transaction Layer
Data Link Layer
SerDes
Phy
Logical
Layer
SerDes
Phy
Logical
Layer
SerDes
Phy
Logical
Layer
...
Multiplexer / Demultiplexer
Transaction Layer
Data Link Layer
89HPES24T3G2
Product Brief
24-Lane 3-Port
Gen 2 PCI Express® Switch
2 of 2 October 18, 2007
IDT 89HPES24T3G2 Product Brief
CORPORATE HEADQUARTERS
6024 Silver Creek Valley Road
San Jose, CA 95138
for SALES:
800-345-7015 or 408-284-8200
fax: 408-284-2775
www.idt.com
for Tech Support:
email: ssdhelp@idt.com
phone: 408-284-8208
NOT AN OFFER FOR SALE
The information presented herein is subject to a Non-Disclosure Agreement and is for planning purposes only. Nothing contained in this presenta-
tion, whether verbal or written, is intended as, or shall have the effect of, a sale or an offer for sale that creates a contractual power of acceptance.
®
Hot-swap capable I/O
External Serial EEPROM contents are checksum protected
Supports PCI Express Device Serial Number Capability
Capability to monitor link reliability and autonomously change
link speed to prevent link instability
Power Management
Utilizes advanced low-power design techniques to achieve low
typical power consumption
Support PCI Power Management Interface specification (PCI-
PM 1.1)
Supports device power management states: D0, D3
hot
and
D3
cold
Support for PCI Express Active State Power Management
(ASPM) link state
Supports link power management states: L0, L0s, L1, L2/L3
Ready and L3
Supports PCI Express Power Budgeting Capability
Configurable SerDes power consumption
Supports optional PCI-Express SerDes Transmit Low-Swing
Voltage Mode
Supports numerous SerDes Transmit Voltage Margin
settings
Unused SerDes are disabled
Testability and Debug Features
Per port link up and activity status outputs available on I/O
expander outputs
Built in SerDes 8-bit and 10-bit pseudo-random bit stream
(PRBS) generators
Numerous SerDes test modes, including a PRBS Master
Loopback mode for in-system link testing
Ability to read and write any internal register via SMBus and
JTAG interfaces, including SerDes internal controls
Per port statistics and performance counters, as well as propri-
etary link status registers
General Purpose Input/Output Pins
Each pin may be individually configured as an input or output
Each pin may be individually configured as an interrupt input
Some pins have selectable alternate functions
Option A Package: 19mm x 19mm 324-ball Flip Chip BGA
with 1mm ball spacing
Option B Package: 27mm x 27mm 676-ball Flip Chip BGA
with 1mm ball spacing
Product Description
Utilizing standard PCI Express interconnect, the PES24T3G2
provides the most efficient I/O connectivity solution for applications
requiring high throughput, low latency, and simple board layout with a
minimum number of board layers. It provides connectivity for up to 3
ports across 24 integrated serial lanes. Each lane provides 5 Gbps of
bandwidth in both directions and is fully compliant with PCI Express
Base Specification, Revision 2.0, including operation in 5 Gbps, 2.5
Gbps, and mixed 5 Gbps / 2.5Gbps modes.
The PES24T3G2 is based on a flexible and efficient layered architec-
ture. The PCI Express layer consists of SerDes, Physical, Data Link and
Transaction layers in compliance with PCI Express Base specification
Revision 2.0. The PES24T3G2 can operate either as a store and
forward or cut-through switch and is designed to switch memory and I/O
transactions. It supports eight Traffic Classes (TCs) and one Virtual
Channel (VC) with sophisticated resource management to enable effi-
cient switching and I/O connectivity for servers, storage, and embedded
processors with limited connectivity.
Figure 2 I/O Expansion Application
Memory
Memory
Memory
Processor
Memory
North
Bridge
PES24T3G2
I/O Dual
10GbE
I/O
SATA
I/O
SATA
PCI Express
Slot
Processor
x8
x8
x8

89HPES24T3G2ZBALG8

Mfr. #:
Manufacturer:
IDT
Description:
PCI Interface IC 24-lane, 3-port Gen2 PCIe Switch
Lifecycle:
New from this manufacturer.
Delivery:
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