Highlights
• High-reliability PCIe: robust error containment,
hot- and surprise-plug controllers per port, end-
to-end data integrity protection, ECC protection
on RAMs, high-quality, low-power SERDES
• Comprehensive diagnostics and debugging:
PCIe generator and analyzer, per-port
performance and error counters, multiple
loopback modes, and real-time eye capture
• Significant power, cost, and board space
savings with support for:
• Up to 48 ports, 48 NTBs, and 24 virtual
switch partitions
• Flexible x2, x4, x8 and x16 port bifurcation
with no restrictions on configuring ports
as either upstream or downstream, or on
mapping ports to NTBs
The Switchtec PFX/PFX-I PCIe Gen3 fanout switch families comprise high-
reliability PCIe Base Specification 3.1-compliant switches supporting up to
96 lanes, 24 virtual switch partitions, 48 Non-Transparent Bridges (NTBs),
hot- and surprise-plug controllers for each port, advanced error containment,
and comprehensive diagnostics and debug capabilities. The PFX-I Gen3 PCIe
Switch supports the full feature set available on the PFX* and operates over an
extended industrial temperature range of –40 °C ambient to 105 °C junction.
Typical applications include data center equipment, defense, industrial servers,
workstations, test equipment, video production and broadcasting equipment,
cellular infrastructure, access networks, metro networks, and core networking.
Features
High-Performance Non-Blocking Switches
• Up to 174 GB/s switching capacity
• 96-lane, 80-lane, 64-lane, 48-lane, 32-lane, and 24-lane variants
• Ports bifurcate from x2 to x16 lanes
• Up to 48 NTBs assignable to any port
• Logical Non-Transparent (NT) interconnect allows for larger topologies
(up to 256 masters)
• Supports 1+1 and N+1 failover mechanisms
• NT address translation using direct windows and multiple sub-windows
per BAR
• Supports multicast groups per port
• PFX-I supports an extended industrial temperature range TA: –40 °C to TJ:
105 °C
Error Containment
• Advanced Error Reporting (AER) on all ports
• Downstream Port Containment (DPC) on all downstream ports
• Poisoned TLP blocking
• Completion Timeout Synthesis (CTS) to prevent an error state in an
upstream host due to incomplete non-posted transactions
• Hot- and surprise-plug controllers per port
• GPIOs configurable for different cable/connector standards
PCIe Interfaces
• Passive, managed, and optical cables
• SFF-8644, SFF-8643, SFF-8639, OCuLink, and other connectors
• SHPC-enabled slot and edge connectors
Diagnostics and Debug
• Transaction Layer Packet (TLP) generator for testing and debugging of links
and error handling
• Real-time eye capture
• Any-to-any port mirroring for debug purposes
• External loopback at PHY and TLP layers
• Errors, statistics, performance, and TLP latency counters
*Except for Adaptive Voltage Scaling (AVS).
Switchtec™ PFX/PFX-I PCIe Gen3 Fanout Switch Families
PM853x PFX and PM857x PFX-I 96/80/64/48/32/24xG3 PCIe Gen3 Fanout Switches
Microsemi Corporation (Nasdaq: MSCC) offers a comprehensive portfolio of semiconductor and system solutions for aerospace
& defense, communications, data center and industrial markets. Products include high-performance and radiation-hardened
analog mixed-signal integrated circuits, FPGAs, SoCs and ASICs; power management products; timing and synchronization
devices and precise time solutions, setting the world’s standard for time; voice processing devices; RF solutions; discrete
components; enterprise storage and communication solutions, security technologies and scalable anti-tamper products;
Ethernet solutions; Power-over-Ethernet ICs and midspans; as well as custom design capabilities and services. Microsemi is
headquartered in Aliso Viejo, California and has approximately 4,800 employees globally. Learn more at www.microsemi.com.
Microsemi Corporate Headquarters
One Enterprise, Aliso Viejo, CA 92656 USA
Within the USA: +1 (800) 713-4113
Outside the USA: +1 (949) 380-6100
Fax: +1 (949) 215-4996
Email: sales.support@microsemi.com
www.microsemi.com
©
2018 Microsemi Corporation. All rights reserved.
Microsemi and the Microsemi logo are registered
trademarks of Microsemi Corporation. All other
trademarks and service marks are the property
of their respective owners.
Microsemi makes no warranty, representation, or guarantee regarding the information contained herein or the suitability of its products and services for any
particular purpose, nor does Microsemi assume any liability whatsoever arising out of the application or use of any product or circuit. The products sold
hereunder and any other products sold by Microsemi have been subject to limited testing and should not be used in conjunction with mission-critical equipment
or applications. Any performance specifications are believed to be reliable but are not verified, and Buyer must conduct and complete all performance and other
testing of the products, alone and together with, or installed in, any end-products. Buyer shall not rely on any data and performance specifications or parameters
provided by Microsemi. It is the Buyer’s responsibility to independently determine suitability of any products and to test and verify the same. The information
provided by Microsemi hereunder is provided “as is, where is” and with all faults, and the entire risk associated with such information is entirely with the Buyer.
Microsemi does not grant, explicitly or implicitly, to any party any patent rights, licenses, or any other IP rights, whether with regard to such information itself
or anything described by such information. Information provided in this document is proprietary to Microsemi, and Microsemi reserves the right to make any
changes to the information in this document or to any products and services at any time without notice.
ESC-2180101. 1.0. 3/18
Switchtec™ PFX/PFX-I PCIe Gen3 Fanout Switch Families
PM853x PFX and PM857x PFX-I 96/80/64/48/32/24xG3 PCIe Gen3 Fanout Switches
Ordering Information
Product Lanes Ports/
NTBs Partitions Hot-plug
Controllers Package PFX Ordering No. PFX-I Ordering No.
96xG3 PCIe Fanout Switch 96 48 24 48 37.5 mm x 37.5 mm PM8536B-FEI PM8576B-FEI
80xG3 PCIe Fanout Switch 80 40 20 40 37.5 mm x 37.5 mm PM8535B-FEI PM8575B-FEI
64xG3 PCIe Fanout Switch 64 32 16 32 37.5 mm x 37.5 mm PM8534B-FEI PM8574B-FEI
48xG3 PCIe Fanout Switch 48 24 12 24 27.0 mm x 27.0 mm PM8533B-F3EI PM8573B-F3EI
32xG3 PCIe Fanout Switch 32 16 8 16 27.0 mm x 27.0 mm PM8532B-F3EI PM8572B-F3EI
24xG3 PCIe Fanout Switch 24 12 6 12 27.0 mm x 27.0 mm PM8531B-F3EI PM8571B-F3EI
Peripheral I/O Interfaces
• Up to 11 Two-Wire Interfaces (TWIs) with SMBus support
• Up to 2 SFF-8485-compliant SGPIO ports
• Up to 109 parallel GPIO pins
• Up to 4 UARTs
• JTAG and EJTAG interface
High-speed I/O
• PCIe Gen3 8 GT/s
• Supports PCIe-compliant link training and manual PHY
configuration
Power Management
• Active State Power Management (ASPM)
• Software controlled power management
Chiplink Diagnostic Tools
• Extensive debug, diagnostics, configuration, and analysis
tools with an intuitive GUI
• Access to configuration data, management capabilities, and
signal integrity analysis tools (such as real-time eye capture)
• Connects to device over in-band PCIe or sideband signals
(UART, TWI, and EJTAG)
Evaluation Kit
The evaluation kit is a device evaluation environment supporting
multiple host and SSD interfaces. These kits can be used for
evaluation of the Switchtec PCIe Fanout switches. Note that
a 96-lane PCIe switch is populated on the evaluation kit.The
following kit is available:
• PM5461-KIT—PFX/PFX-L/PSX/PAX 96/80/64xG3, 1-Slot,
16 HD Evaluation Kit (PMC-2151996)
Example Application
Host Host
NVMe
SSD
NVMe
SSD
NVMe
SSD
x16
x16
x2/x4 x2/x4
Note: PFX TJunction: 0 °C to 105 °C. PFX-I TAmbient: –40 °C to TJunction: 105 °C. PFX-I doesn't support Adaptive Voltage Scaling (AVS).
