Development Kit User’s Guide
October 2008 Order Number: 320067-002US
29
Technical Reference—Intel
®
EP80579 Integrated Processor with Intel
®
QuickAssist Technology
4.3 SMBus Address
Table 11 shows the SMBus device addresses on the Intel
®
EP80579 Development
Board.
Table 10. Intel
®
EP80579 IA-32 core Frequency Selection
IA-32 core
Maximum
Operating
Frequency
(MHz)
Desired
IA-32 core
Operating
Frequency
(MHz)
J7F2 Jumper
Setting
(V_SEL in
Table 13)
J7G6 Jumper
Setting
(BSEL in
Table 13)
Comments
600 600 Short 2-3
1
Short 2-3
1
Requires a SKU with a 600 MHz IA-
32 core frequency
1066 1066 Short 2-3
1
Short 2-3
1
1200 1066 Short 1-2-3
2
Short 2-3
1
Allows 1200 MHz IA-32 core to run
at 1066 MHz
1200 1200 Short 2-3
1
Short 2-3
1
1. “Short 2-3” means to use a 2 pin jumper to shunt pins 2-3 together
2. “Short 1-2-3” means to use a jumper to shunt pins 1-2-3 together
Table 11. SMBus Connectivity
Devices Address
Power
Rail
Primary from Intel
®
EP80579
SIO 0x5C 3.3V
EP80579 Processor - IICH slave device 0x44 3.3V
SMBus A
EP80579 Processor - IMCH slave device 0x60 3.3V
DB800 0xDC 3.3V
CK410 0xD2 3.3V
ITP Master 3.3V
SMBus B
DIMM 0 0xA4 3.3V
DIMM 1 0xA6 3.3V
SMBus C
HSS Mezzanine 0 Determined by card 3.3V
HSS Mezzanine 1 Determined by card 3.3V
HSS Mezzanine 2 Determined by card 3.3V
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