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Table 5. Standby Current Requirements
Instantly Available Current
Support Description
Standby Current
Requirements (mA)
Estimate for integrated board
components
Total for the D815EGEW board 770*
PS/2 ports
**
345
PCI 2.2 slots (wake-enabled) 375
PCI 2.2 slots (nonwake-enabled) 100
Estimate for add-on components
(Add to integrated board
components shown above)
USB ports
**
700
* Refer to the Intel Desktop Board D815EGEW Technical Product Specification for the exact standby current requirements
** Dependent upon system configuration
✏
NOTE
PCI requirements are calculated by totaling the following:
• One wake-enabled device @ 375 mA
• Five non wake-enabled devices @ 20 mA each
PS/2 Ports requirements per the IBM PS/2 Port Specification (Sept 1991):
• Keyboard @ 275 mA
• Mouse @ 70 mA
USB requirements are calculated by totaling the following:
• One wake-enabled device @ 500 mA
• USB hub @ 100 mA
• Three USB non-wake-enabled devices @ 2.5 mA each
• The USB ports are limited to a combined total of 700 mA
Resume on Ring
The operation of Resume on Ring can be summarized as follows:
• Resumes operation from either the APM sleep mode or the ACPI S1 state
• Requires only one call to access the computer
• Detects incoming call similarly for external and internal modems
• Requires modem interrupt be unmasked for correct operation