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: 0°C to 85°C
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 (0°C to 70°C)
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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