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COMe-bIP2 / Features and Interfaces
4.8 Dual Staged Watchdog Timer
Basics
A watchdog timer (or computer operating properly (COP) timer) is a computer hardware or software timer that triggers a
system reset or other corrective action if the main program, due to some fault condition, such as a hang, neglects to
regularly service the watchdog (writing a “service pulse” to it, also referred to as “kicking the dog”, “petting the dog”,
“feeding the watchdog” or “triggering the watchdog”). The intention is to bring the system back from the nonresponsive
state into normal operation.
The COMe-bIP2 offers a watchdog which works with two stages that can be programmed independently and used one by
one.
Time-out events
Reset
A reset will restart the module and starts POST and operating system new.
NMI
A non-maskable interrupt (NMI) is a computer processor interrupt that cannot be ignored by standard interrupt masking techniques in the
system. It is typically used to signal attention for non-recoverable hardware errors.
SCI
A system control interrupt (SCI) is a OS-visible interrupt to be handled by the OS using AML code
Delay
Might be necessary when an operating system must be started and the time for the first trigger pulse must extended. (Only available in the first
stage)
WDT Signal only
This setting triggers the WDT Pin on baseboard connector (COM Express® Pin B27) only
Cascade:
Does nothing, but enables the 2nd stage after the entered time-out.
WDT Signal
B27 on COM Express® Connector offers a signal that can be asserted when a watchdog timer has not been triggered within
time. It can be configured to any of the 2 stages. Deassertion of the signal is automatically done after reset. If
deassertion during runtime is necessary please ask your Kontron technical support for further help.
38
- COMe-bIP2 1
- » Table of Contents « 3
- 1 User Information 6
- 1.5 Warranty 7
- 1.6 Technical Support 7
- 2 Introduction 8
- 2.5 COM Express® Benefits 9
- 3 Product Specification 10
- 3.2 Functional Specification 11
- PCH comparison 14
- Graphics Core 15
- Connectivity 16
- Misc Interfaces and Features 17
- Kontron Features 17
- Additional features 17
- Power Features 17
- 3.3 Block Diagram 18
- 3.4 Accessories 19
- 3.5 Electrical Specification 20
- 3.5.5 ATX Mode 21
- 3.5.6 Single Supply Mode 21
- 3.6 Power Control 22
- 3.7.2 Humidity 23
- WEEE Directive 24
- Conformal Coating 24
- Shock & Vibration 25
- 3.9 MTBF 26
- 3.10 Mechanical Specification 27
- 3.11 Module Dimensions 28
- 3.13 Onboard Fan Connector 30
- 4 Features and Interfaces 31
- 4.4 SPI boot 33
- Using an external SPI flash 34
- 4.5 M.A.R.S 35
- 4.6 Fast I2C 36
- Configuration 37
- Time-out events 38
- WDT Signal 38
- 4.10 Speedstep Technology 41
- 4.11 C-States 42
- 4.12 Hyper Threading 43
- 4.14 VID-x 45
- 4.17 Display Configuration 49
- DDI Design Consideration 52
- DVI-I Design Topology 52
- 3 independent Display Support 52
- Requirements 53
- Setup a Multi-monitor system 53
- 4.19 Intel® vPro™ technology 54
- 5 System Resources 56
- 5.2 Memory Area 57
- 5.3 I/O Address Map 57
- 5.5 I2C Bus 58
- 5.6 JILI I2C Bus 58
- 5.7 SDVO I2C Bus 58
- 6 Connectors 60
- 7 Pinout List 61
- 7.2 Connector X1A Row A 62
- COMe-bIP2 / Pinout List 63
- 7.3 Connector X1A Row B 64
- 7.4 Connector X1B Row C 66
- 7.5 Connector X1B Row D 68
- 8 BIOS Operation 70
- 8.3 Setup Guide 72
- 8.4 POST Codes 72
- Item Specific Help Window 73
- General Help Window 73
- 8.5 BIOS Setup 74
- Platform Information 75
- 8.5.2 Advanced 76
- PCI Subsystem Settings 77
- ACPI Settings 78
- Trusted Computing 79
- CPU Configuration 80
- CPU Information 81
- Miscellaneous 82
- Onboard I2C Bus Configuration 83
- Watchdog 84
- Smart Battery Configuration 85
- Battery Information 86
- Generic LPC Decode Ranges 87
- Thermal Configuration 88
- Passive Cooling 89
- Intel Fast Flash Standby 90
- PCH-FW Configuration 91
- Firmware Update Configuration 93
- Super IO Configuration 95
- Serial Port 1 Configuration 96
- Serial Port 2 Configuration 97
- Parallel Port Configuration 98
- H/W Monitor 99
- COMe-bIP2 / BIOS Operation 100
- Console Redirection Settings 102
- Intel ICC 103
- Clock Spread Spectrum 104
- CPU PPM Configuration 105
- 8.5.3 Chipset 106
- PCH-IO Configuration 107
- LAN Configuration 108
- SATA Configuration 109
- HDA Configuration 111
- USB Configuration 112
- PCI Express Configuration 113
- SystemAgent Configuration 115
- Graphics Configuration 116
- LCD Control 117
- - DVI-I' 118
- Memory Configuration 120
- Custom Memory Profile Control 121
- GT - Power Management Control 122
- 8.5.4 Boot 123
- Boot Option Priority 124
- 8.5.5 Security 125
- Set HDD Password 126
- 8.5.6 Save & Exit 127
- Corporate Offices 128
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