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PI7C8140A 2-PORT PCI-to-PCI BRIDGE PLX PCI6140 COMPARISON FEATURE COMPARISON: PI7C8140A vs. PLX PCI6140
Features: Feature Interfaces ! Complies with the following specifications: PCI Local Bus Specification PCI-to-PCI Bridge Architecture Specification ! 3.3V and 5V signaling environments ! 66MHz capable ! Concurrent primary and secondary bus operations Memory Buffer Architecture ! Dynamic Prefetching Control Bus Arbitration ! Programmable internal arbiter for the secondary bus with support for up to 4 external masters IEEE 1149.1 JTAG port ! Available boundary scan testing Compact PCI Hot Swap ! Hot Swap Friendly Support Packaging ! 128-pin QFP ! Extended commercial temp range: 0C to 85C Pin differences (128-pin QFP): pin number 65 106 Register differences: Vendor ID Device ID Pericom PI7C8140A 12D8h 8140h PLX PCI6140 3388h 0021h Pericom PI7C8140A SCAN_TM# SCAN_EN PLX PCI6140 No Connect S_IDEN (reserved) Pericom PI7C8140A Revision 2.2 Revision 1.1 yes yes yes yes yes no yes yes yes PLX PCI6140 Revision 2.1 Revision 1.1 no (3.3V w/5V tolerance) no yes no yes no yes yes no (0C to 70C)
PERICOM SEMICONDUCTOR Page 1 of 3
JUNE 2004
PI7C8140A 2-PORT PCI-to-PCI BRIDGE PLX PCI6140 COMPARISON PERFORMANCE COMPARISON: PI7C8140A vs. PLX PCI6140
The performance data was measured using an in-house evaluation board slotted into an off-the-shelf motherboard. Fast Ethernet (100Mbit LAN) Cards reside in each of the 4 PCI slots on the secondary bus of the evaluation board. In each comparison, the hardware and software remain constant. The only item changed is the bridge on the evaluation board. Two different sets of hardware were used, and the description of each fixture is listed. In each test setup, a PCI exerciser program is used to generate traffic or write packets from the PCI Fast Ethernet card to memory and then read back from memory to the PCI Fast Ethernet card. TEST CASE 1 Motherboard: Chipset: Processor: Memory: Video: Other PCI Devices:
Tyan S2721-533 v1.02 Intel E7501 server Intel Xeon 2.4GHz 512MB DDR2100 Onboard video No other PCI devices active
A Fast Ethernet card running full duplex is slotted in each of the 4 PCI slots on the evaluation board. Results: Transfer rate measured in Megabits per second Card Number LAN Card 1 LAN Card 2 LAN Card 3 LAN Card 4 Pericom PI7C8140A 35.81 - 38.45 Mb/s 33.30 - 38.30 Mb/s 18.10 - 20.70 Mb/s 33.83 - 36.60 Mb/s PLX PCI6140 10.96 - 12.16 Mb/s 10.05 - 13.95 Mb/s 3.50 - 5.40 Mb/s 9.81 - 15.74 Mb/s
TEST CASE 2 Motherboard: Chipset: Processor: Memory: Video: Other PCI Devices:
SuperMicro P3TDLE ServerWorks ServerSet III LE Intel P III 800 512MB S3 TrioV64/DX No other PCI devices active
A Fast Ethernet card running full duplex is slotted in each of the 4 PCI slots on the evaluation board. Results: Transfer rate measured in Megabits per second Card Number LAN Card 1 LAN Card 2 LAN Card 3 LAN Card 4 Pericom PI7C8140A 47.09 - 50.01 Mb/s 83.73 - 85.99 Mb/s 46.85 - 49.45 Mb/s 82.69 - 87.00 Mb/s PLX PCI6140 15.66 - 19.63 Mb/s 64.02 - 69.17 Mb/s 13.82 - 16.73 Mb/s 59.90 - 63.57 Mb/s
PERICOM SEMICONDUCTOR Page 2 of 3
JUNE 2004
PI7C8140A 2-PORT PCI-to-PCI BRIDGE PLX PCI6140 COMPARISON
TEST CASE 3 Motherboard: Chipset: Processor: Memory: Video: Other PCI Devices: MSI GNB Max Intel E7205 Intel P4 2.4GHz 256MB DDR266 nVidia GeForce 2 MX-400 w 64MB, AGP4X No other PCI devices active
A Fast Ethernet card running full duplex is slotted in each of the 4 PCI slots on the evaluation board. Results: Transfer rate measured in Megabits per second Card Number LAN Card 1 LAN Card 2 LAN Card 3 LAN Card 4 Pericom PI7C8140A 28.76 - 30.05 Mb/s 31.87 - 33.56 Mb/s 29.99 - 32.86 Mb/s 28.36 - 31.46 Mb/s PLX PCI6140 3.93 - 6.18 Mb/s 3.78 - 5.83 Mb/s 3.05 - 6.01 Mb/s 2.58 - 5.29 Mb/s
PERICOM SEMICONDUCTOR Page 3 of 3
JUNE 2004

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