New Product Databrief
Gen2 PCIe
®
3-Port/4-Lane, 4-Port/4-Lane SlimLine
™
Packet Switch;
Gen2 PCIe
®
3-Port/3-Lane, ExtremeLo
™
Packet Switch
The PI7C9X2G Packet Switch family is a PCI Express
®
2.1
specifically designed to meet the latest low-power, lead (Pb)-
free and green system requirements. The family is a high-
performance, cost-effective solution that can be implemented
in systems such as Embedded system, Wi-Fi Router/Gateway,
Printer, Storage, combo card, HBA, Set-top box, motherboard,
laptop, docking station, and other power-sensitive high
performance platforms. All family products contain Pericom’s
proprietary power-saving PowerSave
™
technology. The family
provide users the flexibility to expand or fan-out from a wide
range of I/O Bridges such as PCH, ICH, IOH, embedded MCU,
FPGA, and other Application Specific ICs.
• The PI7C9X2G304SL provides one x1 or x2 upstream port
and two x1 downstream ports.
• The PI7C9X2G404SL provides one x1 upstream port and
three x1 downstream ports.
• The PI7C9X2G303EL provides one x1 upstream port and
two x1 downstream ports.
PI7C9X2G304SL, 404SL, 303EL
Features
• Non-blocking full-wired switching capability at 32 Gbps
when all 4 lanes are enabled (304SL, 404SL) and at 24
Gbps when all 3 lanes are enabled (303SL)
• Integrated 100MHz Clock buffer for each
downstream port
• Reliability, Availability and Serviceability
Supports Data Poisoning and End-to-End CRC
Advanced Error Reporting and Logging
IEEE 1149.6 JTAG interface support
• Link Power Management
Supports L0, L0s, L1, L2, L2/L3
Ready
and L3 link
power state
Active state power management for L0s and L1 state
• Device State Power Management
Supports D0, D3
Hot
and D3
Cold
3.3V Aux Power support in D3
Cold
power state
• Supports up to 256-byte maximum payload size
• Power Dissipation: 0.72 W typical in L0 normal mode
and 0.2W typical in L1 mode (0.74 W for 304SL)
Block Diagram
PI7C9X2G304SL
Host
controller
x1 or x2 PCIe2
• Industrial Temperature Range: -40°C to 85°C
• MTBF: TBD
• Package: 128-pin LQFP 14mm x 14mm (304SL, 404SL)
136-pin LQFP 8mm x 8mm (303EL)
Pb free and 100% Green
PCIe
Endpoint
PI7C9X2G304SL
x1 PCIe2
PCIe
Endpoint
Enhanced Features
• Programmable Driver Current and De-Emphasis Level
at each individual port
• 150ns typical latency for packet running through switch
without blocking
• Supports “Cut-through” (Default) as well as “Store and
Forward” mode for switching packets
PI7C9X2G404SL
Host
controller
x1 PCIe2
PI7C9X2G404SL
x1
PCIe
Endpoint
PCIe
Endpoint
PCIe
Endpoint
• Advanced Power Savings
Empty downstream ports are set to idle
Clock to corresponding circuit is turned off when
any port enters L1 or ASPM L1
Supports Access Control Service (ACS) for
peer-to-peer traffic
PI7C9X2G303EL
Host
controller
x1 PCIe2
PI7C9X2G303SL
x1
PCIe
Endpoint
PCIe
Endpoint
Supports Address Translation (AT) packet for
SR-IOV application
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