32-Lane 8-Port PCIe® Gen2
I/O Expansion Switch
®
89HPES32T8G2
Product Brief
The 89HPES32T8G2 is a member of the IDT PRECISE™ family of
PCI Express® switching solutions. The PES32T8G2 is a 32-lane, 8-port
switch optimized for PCI Express Gen2 packet switching in high-perfor-
mance applications. Target applications include servers, storage,
communications, embedded systems, and multi-host or intelligent I/O
based systems with inter-domain communication.
Utilizing standard PCI Express Gen2 interconnect, the PES32T8G2
provides the most efficient system interconnect switching solution for
applications requiring high throughput, low latency, and simple board
layout with a minimum number of board layers. Each lane is capable of 5
GT/s of bandwidth in both directions and is fully compliant with PCI
Express Base specification 2.0.
Device Overview
–
Autonomous and software managed link width and speed
control
–
Per lane SerDes configuration
• De-emphasis
• Receive equalization
• Drive strength
Initialization / Configuration
–
Supports Root (BIOS, OS, or driver), Serial EEPROM, or
SMBus switch initialization
–
Common switch configurations are supported with pin strap-
ping (no external components)
–
Supports in-system Serial EEPROM initialization/program-
ming
Quality of Service (QoS)
–
Port arbitration
• Round robin
• Weighted Round Robin (WRR)
–
Request metering
• IDT proprietary feature that balances bandwidth among
switch ports for maximum system throughput
–
High performance switch core architecture
• Combined Input Output Queued (CIOQ) switch architecture
with large buffers
Multicast
–
Compliant to the PCI-SIG multicast ECN
–
Supports arbitrary multicasting of Posted transactions
–
Supports 64 multicast groups
–
Multicast overlay mechanism support
–
ECRC regeneration support
Clocking
–
Supports 100 MHz and 125 MHz reference clock frequencies
–
Flexible clocking modes
• Common clock
• Non-common clock
Hot-Plug and Hot Swap
–
Hot-plug controller on all ports
• Hot-plug supported on all downstream switch ports
–
All ports support hot-plug using low-cost external I
2
C I/O
expanders
–
Configurable presence detect supports card and cable appli-
cations
–
GPE output pin for hot-plug event notification
• Enables SCI/SMI generation for legacy operating system
support
–
Hot-swap capable I/O
Features
High Performance Non-Blocking Switch Architecture
–
32-lane 8-port PCIe switch
• Four x8 switch ports each of which can bifurcate to two x4
ports (total of eight x4 ports)
–
Integrated SerDes supports 5.0 GT/s Gen2 and 2.5 GT/s
Gen1 operation
–
Delivers up to 32 GBps (256 Gbps) of switching capacity
–
Supports 128 Bytes to 2 KB maximum payload size
–
Low latency cut-through architecture
–
Supports one virtual channel and eight traffic classes
Standards and Compatibility
–
PCI Express Base Specification 2.0 compliant
–
Implements the following optional PCI Express features
• Advanced Error Reporting (AER) on all ports
• End-to-End CRC (ECRC)
• Access Control Services (ACS)
• Power Budgeting Enhanced Capability
• Device Serial Number Enhanced Capability
• Sub-System ID and Sub-System Vendor ID Capability
• Internal Error Reporting ECN
• Multicast ECN
• VGA and ISA enable
• L0s and L1 ASPM
• ARI ECN
Port Configurability
–
x4 and x8 ports
• Ability to merge adjacent x4 ports to create a x8 port
–
Automatic per port link width negotiation
(x8
→
x4
→
x2
→
x1)
–
Crosslink support
–
Automatic lane reversal
IDT and the IDT logo are registered trademarks of Integrated Device Technology, Inc.
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©
2008 Integrated Device Technology, Inc.
September 25, 2008
IDT 89HPES32T8G2 Product Brief
Power Management
–
Supports D0, D3hot and D3 power management states
–
Active State Power Management (ASPM)
• Supports L0, L0s, L1, L2/L3 Ready and L3 link states
• Configurable L0s and L1 entry timers allow performance/
power-savings tuning
–
Supports PCI Express Power Budgeting Capability
–
SerDes power savings
• Supports low swing / half-swing SerDes operation
• SerDes optionally turned-off in D3hot
• SerDes associated with unused ports are turned-off
• SerDes associated with unused lanes are placed in a low
power state
9 General Purpose I/O
Reliability, Availability and Serviceability (RAS)
ECRC support
AER on all ports
SECDED ECC protection on all internal RAMs
End-to-end data path parity protection
Checksum Serial EEPROM content protected
Autonomous link reliability (preserves system operation in the
presence of faulty links)
–
Ability to generate an interrupt (INTx or MSI) on link up/down
transitions
Test and Debug
–
On-chip link activity and status outputs available for Port 0
(upstream port)
–
Per port link activity and status outputs available using
external I
2
C I/O expander for all other ports
–
SerDes test modes
–
Supports IEEE 1149.6 AC JTAG and IEEE 1149.1 JTAG
Power Supplies
–
Requires only two power supply voltages (1.0 V and 2.5 V)
–
No power sequencing requirements
Packaged in a 23mm x 23mm 484-ball Flip Chip BGA with
1mm ball spacing
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September 25, 2008
IDT 89HPES32T8G2 Product Brief
Block Diagram
8-Port Switch Core / 32 Gen2 PCI Express Lanes
Frame Buffer
Route Table
Port
Arbitration
Scheduler
Transaction Layer
Data Link Layer
Transaction Layer
Data Link Layer
Transaction Layer
Data Link Layer
Multiplexer / Demultiplexer
Phy
Logical
Layer
Phy
Logical
Layer
Phy
Logical
Layer
Phy
Logical
Layer
Multiplexer / Demultiplexer
Phy
Logical
Layer
Phy
Logical
Layer
Phy
Logical
Layer
Phy
Logical
Layer
Multiplexer / Demultiplexer
Phy
Logical
Layer
Phy
Logical
Layer
Phy
Logical
Layer
Phy
Logical
Layer
SerDes
SerDes
SerDes SerDes
SerDes
SerDes
SerDes SerDes
SerDes
SerDes
SerDes SerDes
(Port 0)
(Port 1)
Figure 1 PES32T8G2 Block Diagram
(Port 7)
August 16, 2004August 16, 200
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.
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
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®
for Tech Support:
email: ssdhelp@idt.com
phone: 408-284-8208
September 25, 2008
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