Product specifications

VT8237R Data Sheet
Revision 2.06 December 15, 2004 -107- Device 17 Function 0 Bus Control Registers
Output Control
Offset 67 – Output Control (04h).....................................RW
7-3 Reserved ........................................ always reads 0
2 FERR Voltage
0 2.5V
1 1.5V ....................................................default
1-0 Reserved ........................................ always reads 0
High Precision Event Timers (HPET)
Offset 68 – HPET Control (00h)...................................... RW
7 High Precision Event Timers
0 Disable................................................... default
1 Enable
6-0 Reserved ........................................always reads 0
Offset 6B-69 – HPET Memory Base Address (000000h)RW
23-22 Reserved ........................................always reads 0
21-0 HPET Memory Base Address [31:10]