User’s Manual
GT-650 WatchDog Timer D - 2
Configuration Sequence
To program configuration registers, the following configuration sequence must as
be followed.
1.
Enter the extended function mode:
To place the chip into the extended function mode, Two successive
writites of 0x87 must be applied to the Extended Functions Enable
Register EFER (I/O port address 2Eh or 4Eh).
2.
Configure the configuration registers:
The chip selects the logical device and activates the desired logical
devices through Extended Function Index Register (EFIR) and Extended
Function Data Register (EFDR), EFIR is located at the same address as
EFER, and EFDR is located at address (EFIR+1). First, write the Logical
Device Number (i.e., 0x07) to the EFIR and then write the number of
desired logical device to the EFDR. Secondly, write the address of
desired configuration register within the logical device to EFIR and then
write (or read) the desired configuration register through EFDR.
3.
Exit the extended function mode:
After programming of configuration register is finished. Exit the extended
function mode by writing 0xAAh to the Extended Functions Enable
Register EFER (I/O port address 2Eh or 4Eh).
Once the chip exits the extended function mode, it is the normal running
mode and is ready to enter the configuration mode.
Data Register information (Logical Device 8)
CRF5 (Default 0x00)
Bit 7-6: Select PLED mode
Bit 5-4: Reserved
Bit3: Select Watchdog count mode
= 0
second
= 1
mintue
Bit2: Enable the rising edge of keyboard Reset to force Time-out event.
= 0
Disable
= 1
Enable
Bit 1-0: Reserved
Summary of Contents for GT-650
Page 1: ...GT 650 Pentium III Celeron w VGA LAN Audio w Video Capture GPIO Embedded Board User s Manual ...
Page 59: ...User s Manual GT 650 Software Setup 5 2 Click on Yes Click on Next ...
Page 60: ...User s Manual GT 650 Software Setup 5 3 Click Finish to restart computer ...
Page 61: ...User s Manual GT 650 Software Setup 5 4 For Windows NT 4 0 system Click on Yes Click on Next ...
Page 62: ...User s Manual GT 650 Software Setup 5 5 Click Finish to restart computer ...
Page 64: ...User s Manual GT 650 Software Setup 5 7 Click Finish to restart computer ...
Page 67: ...User s Manual GT 650 Software Setup 5 10 Click on Next Click on Next ...
Page 68: ...User s Manual GT 650 Software Setup 5 11 Click Finish ...
Page 74: ...User s Manual GT 650 Software Setup 5 17 Click on Finish Click on Yes to restart computer ...
Page 75: ...User s Manual GT 650 Software Setup 5 18 5 4 2 For Windows 2000 system Click on System ...
Page 78: ...User s Manual GT 650 Software Setup 5 21 Click on Next Click on Next ...
Page 79: ...User s Manual GT 650 Software Setup 5 22 Specify the PATH by Browser Locate the INF file ...
Page 80: ...User s Manual GT 650 Software Setup 5 23 Click on Next Click on Finish ...
Page 81: ...User s Manual GT 650 Software Setup 5 24 Click on Close ...
Page 83: ...User s Manual GT 650 Software Setup 5 26 Click on Add Click on Have Disk ...
Page 88: ...User s Manual GT 650 Software Setup 5 31 Click on Next Click Browse to specify PATH ...
Page 89: ...User s Manual GT 650 Software Setup 5 32 Click on Next Click OK ...
Page 93: ...User s Manual GT 650 Software Setup 5 36 Click on Next Click on Next ...
Page 94: ...User s Manual GT 650 Software Setup 5 37 Click on Next Click on Finish ...
Page 111: ...User s Manual GT 650 Mechanical drawing E 1 Appendix E Mechanical Drawing ...