Datasheet

Table of Contents
Conventions ................................................................................................................................................... 3
Table of Contents ............................................................................................................................................ 5
Chapter 1 The Soft Power Management.................................................................................................... 7
Chapter 2 CPU-1450 SPM block diagram architecture ............................................................................ 9
Intel 82801 ICH2 and System Power States......................................................................................... 11
System Power Planes ........................................................................................................................... 12
Power Management interface signals ................................................................................................... 12
Event Input Signals and Their Usage.................................................................................................... 13
Chapter 3 CPU-1450 Power management connections......................................................................... 15
Ethernet........................................................................................................................................................ 16
The Eurotech Ethernet Transceiver ...................................................................................................... 16
Serial 1 & Serial 2 ........................................................................................................................................ 17
Auxiliary Power Connector........................................................................................................................... 18
Electrical connections .................................................................................................................................. 19
Development Kit connections ...................................................................................................................... 20
Chapter 4 SPM Management .................................................................................................................... 21
Entering Low Power mode........................................................................................................................... 22
ATX Power Button................................................................................................................................. 22
External Power Button........................................................................................................................... 22
Software ................................................................................................................................................ 22
Wake-up events ........................................................................................................................................... 23
Serial port Ring Indicator....................................................................................................................... 23
Ethernet ................................................................................................................................................. 23
External Power Button PWRBTN#........................................................................................................ 24
Wake on RTC ........................................................................................................................................ 24
Chapter 5 Soft Power Management Registers........................................................................................ 25
Intel® 82801BA I/O Controller Hub 2 (ICH2) ............................................................................................... 26
PM1_STS Power Management 1 Status Register ................................................................................ 27
PM1_EN—Power Management 1 Enable Register .............................................................................. 28
PM1_CNT—Power Management 1 Control Register............................................................................ 29
GPE0_EN—General Purpose Event 0 Enables Register ..................................................................... 30
SuperIO National PC87364 ......................................................................................................................... 31
Super I/O Configuration D Register (SIOCFD) .....................................................................................32
Chapter 6 Software examples .................................................................................................................. 33
Wake on RTC alarm..................................................................................................................................... 34
Wake on Ring Indicator Pulse...................................................................................................................... 36
Wake on LAN (Ethernet).............................................................................................................................. 37
Chapter 7 CPU power consumption ........................................................................................................ 39
Chapter 8 Appendix................................................................................................................................... 41
Related Software.......................................................................................................................................... 43
Related Documents...................................................................................................................................... 43