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©2008 Advanced Micro Devices, Inc.
SMBus Module and ACPI Block (Device 20, Function 0)
AMD SB600 Register Reference Manual Proprietary Page 173
ProgramIo5RangeHi - RW – 8 bits - [PM_Reg: A3h]
Field Name Bits Default Description
ProgramIo5RangeHi register
Programlo6RangeLo - RW – 8 bits - [PM_Reg: A4h]
Field Name Bits Default Description
ProgramIo6Mask 3:0 0h These four bits are used to mask the least 4 bits of the 16 bit
I/O. If bit [3] is set, then bit [3] of the I/O address is not
compared. If it is not set, then bit [3] of the monitored address
is 0. The same applies for the other three bits [2:0].
For example, if x15=80h, x14[7:4]=Ah, and x14[3:0]=3h, then
the monitored range is 80A4h : 80A0h (bit 0 and 1 are
masked)
ProgramIo6RangeLo 7:4 0h I/O range base address; these bits define the least significant
byte of the 16 bit I/O range base address that is programmed
to trigger SMI# when the address is accessed. Bit 7
corresponds to Addr[7] and bit 4 to Addr[4].
ProgramIo6RangeLo register
ProgramIo6RangeHi - RW – 8 bits - [PM_Reg: A5h]
Field Name Bits Default Description
ProgramIo6RangeHi 7:0 00h I/O range base address; these bits define the most significant
byte of the 16 bit I/O range base address. Bit 7 corresponds
to Addr[15] and bit 0 to Addr[8].
ProgramIo6RangeHi register
Programlo7RangeLo - RW – 8 bits - [PM_Reg: A6h]
Field Name Bits Default Description
ProgramIo7Mask 3:0 0h These four bits are used to mask the least 4 bits of the 16 bit
I/O. If bit [3] is set, then bit [3] of the I/O address is not
compared. If it is not set, then bit [3] of the monitored
address is 0. The same applies for the other three bits [2:0].
For example, if x15=80h, x14[7:4]=Ah, and x14[3:0]=3h, then
the monitored range is 80A4h : 80A0h (bit 0 and 1 are
masked)
ProgramIo7RangeLo 7:4 0h I/O range base address; these bits define the least significant
byte of the 16 bit I/O range base address that is programmed
to trigger SMI# when the address is accessed. Bit 7
corresponds to Addr[7] and bit 4 to Addr[4].
ProgramIo7RangeLo register
ProgramIo7RangeHi - RW – 8 bits - [PM_Reg: A7h]
Field Name Bits Default Description
ProgramIo7RangeHi 7:0 00h I/O range base address; these bits define the most significant
byte of the 16 bit I/O range base address. Bit 7 corresponds
to Addr[15] and bit 0 to Addr[8].
ProgramIo7RangeHi register
PIO7654Enable - RW – 8 bits - [PM_Reg: A8h]
Field Name Bits Default Description
ProgramIo4Enable 0 0b Enables IO monitoring for ProgramIO4 (defined by index A0,
A1).
1 = On
0 = Off