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188
Revision 1.1
G
Core Logic Module
(Continued)
Index 9Ch-9Dh
Parallel / Serial Idle Timer Count Register (R/W)
Reset Value: 0000h
15:0
Parallel / Serial Idle Timer Count.
This idle timer is used to determine when the parallel and serial ports are not in use so
that the ports can be power managed. The 16-bit value programmed in this register represents the period of inactivity for
these ports after which the system is alerted via an SMI. The timer is automatically reloaded with the count value whenever
an access occurs to the parallel (LPT) or serial (COM) I/O address spaces. If the mouse is enabled on a serial port, that port
is not considered here.
This counter uses a 1 second timebase. To enable this timer, set F0 Index 81h[2] = 1.
Top level SMI status is reported at F1BAR0+I/O Offset 00h/02h[0].
Second level SMI status is reported at F0 Index 85h/F5h[2].
Index 9Eh-9Fh
Keyboard / Mouse Idle Timer Count Register (R/W)
Reset Value: 0000h
15:0
Keyboard / Mouse Idle Timer Count.
This idle timer determines when the keyboard and mouse are not in use so that the
LCD screen can be blanked. The 16-bit value programmed in this register represents the period of inactivity for these ports
after which the system is alerted via an SMI. The timer is automatically reloaded with the count value whenever an access
occurs to either the keyboard or mouse I/O address spaces (including the mouse serial port address space when a mouse
is enabled on a serial port.)
This counter uses a 1 second time base. To enable this timer, set F0 Index 81h[3] = 1.
Top level SMI status is reported at F1BAR0+I/O Offset 00h/02h[0].
Second level SMI status is reported at F0 Index 85h/F5h[3].
Index A0h-A1h
User Defined Device 1 Idle Timer Count Register (R/W)
Reset Value: 0000h
15:0
User Defined Device 1 (UDEF1) Idle Timer Count.
This idle timer determines when the device configured as User Defined
Device 1 (UDEF1) is not in use so that it can be power managed. The 16-bit value programmed in this register represents
the period of inactivity for this device after which the system is alerted via an SMI. The timer is automatically reloaded with
the count value whenever an access occurs to memory or I/O address space configured in the F0 Index C0h (Base Address
register) and F0 Index CCh (Control register).
This counter uses a 1 second time base. To enable this timer, set F0 Index 81h[4] = 1.
Top level SMI status is reported at F1BAR0+I/O Offset 00h/02h[0].
Second level SMI status is reported at F0 Index 85h/F5h[4].
Index A2h-A3h
User Defined Device 2 Idle Timer Count Register (R/W)
Reset Value: 0000h
15:0
User Defined Device 2 (UDEF2) Idle Timer Count.
This idle timer determines when the device configured as UDEF2 is not
in use so that it can be power managed. The 16-bit value programmed in this register represents the period of inactivity for
this device after which the system is alerted via an SMI. The timer is automatically reloaded with the count value whenever
an access occurs to memory or I/O address space configured in the F0 Index C4h (Base Address register) and F0 Index
CDh (Control register).
This counter uses a 1 second timebase. To enable this timer, set F0 Index 81h[5] = 1.
Top level SMI status is reported at F1BAR0+I/O Offset 00h/02h[0].
Second level SMI status is reported at F0 Index 85h/F5h[5].
Index A4h-A5h
User Defined Device 3 Idle Timer Count Register (R/W)
Reset Value: 0000h
15:0
User Defined Device 3 (UDEF3) Idle Timer Count.
This idle timer determines when the device configured as UDEF3 is not
in use so that it can be power managed. The 16-bit value programmed in this register represents the period of inactivity for
this device after which the system is alerted via an SMI. The timer is automatically reloaded with the count value whenever
an access occurs to memory or I/O address space configured in the UDEF3 Base Address Register (F0 Index C8h) and
UDEF3 Control Register (F0 Index CEh).
This counter uses a 1 second timebase. To enable this timer, set F0 Index 81h[6] = 1.
Top level SMI status is reported at F1BAR0+I/O Offset 00h/02h[0].
Second level SMI status is reported at F0 Index 85h/F5h[6].
Index A6h-ABh
Reserved
Reset Value: 00h
Index ACh-ADh
Secondary Hard Disk Idle Timer Count Register (R/W)
Reset Value: 0000h
15:0
Secondary Hard Disk Idle Timer Count.
This idle timer is used to determine when the secondary hard disk is not in use so
that it can be powered down. The 16-bit value programmed in this register represents the period of hard disk inactivity after
which the system is alerted via an SMI. The timer is automatically reloaded with the count value whenever an access occurs
to the configured hard disk’s data port (I/O port 1F0h or 170h).
This counter uses a 1 second timebase. To enable this timer, set F0 Index 83h[7] = 1.
Top level SMI status is reported at F1BAR0+I/O Offset 00h/02h[0].
Second level SMI status is reported at F0 Index 86h/F6h[4].
Table 5-29. F0: PCI Header and Bridge Configuration Registers for GPIO and LPC Support (Continued)
Bit
Description