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©2008 Advanced Micro Devices, Inc.
GPIO/GPOC
AMD SB600 Register Reference Manual Proprietary Page 281
Pin Name
(Note 1)
Multi-function
Selection
Output Enable
(On SMBus
Controller)
Bus 00h/ Dev14h/
Fun00
Input if GPI
(On SMBus
Controller)
Bus 00h/
Dev14h/ Fun00
Output if GPO
(On SMBus
Controller)
Bus 00h/
Dev14h/ Fun00
Power
Domain
GPIO[60:53]/
VIN[7:0]
PM2 IO Reg57h[Bit
7:6] [Bit5:4] Bit[3:2] Bit
1:0] Reg56h[Bit 7:6]
[Bit5:4] Bit[3:2] Bit 1:0]
00: GPIO
01/10/11: VIN
Reg 54h[Bit 7:4]
Reg 52h[Bit 7:4]
0: Output
1: Input (Tri-state)
Reg 55h[Bit 3:0]
Reg 53h[Bit 3:0]
Reg 54h[Bit
3:0]
Reg 52h[Bit
3:0]
S0
GPIO[63:61]/
TEMPIN[2:0]
PM2 IO Reg42h[Bit
5:4] [Bit 3:2] [Bit 1:0]
00: GPIO
01/10/11: TEMPIN
Reg 56h[Bit 6:4]
0: Output
1: Input (Tri-state)
Reg 57h[Bit 2:0]
Reg 56h[Bit
2:0]
S0
GPIO64/
TEMPIN3/
TALERT#
PM2 IO Reg42h[Bit
7:6]
00: GPIO or TALERT#
01/10/11: TEMPIN3
Reg 56h[Bit 7]
0: Output
1: Input (Tri-state)
Reg 57h[Bit 3] Reg 56h[Bit 3] S0
GPIO65/
BMREQ#/
REQ5#
PCIB Reg64h[Bit 8]
0: GPIO or BMREQ#
1: REQ5#
SMBus Reg64h[Bit 5]
0: GPIO
1: BMREQ#
Reg 7Eh[Bit 4]
0: Output
1: Input (Tri-state)
Reg 7Fh[Bit 0] Reg 7Eh[Bit 0] S0
GPIO66/
LLB#
PM IO Reg68h[Bit 5]
0: GPIO
1: LLB#
Reg 7Eh[Bit 5]
0: Output
1: Input (Tri-state)
Reg 7Fh[Bit 1] Reg 7Eh[Bit 1] S5
GPIO67/
SATA_ACT#
SMBus RegACh[Bit 3]
0: SATA_ACT#
1: GPIO
Reg ACh[Bit 1]
0: Output
1: Input (Tri-State)
Reg ACh[Bit 2] Reg ACh[Bit 0] S0
GPIO68/
LDRQ1#/
GNT5#
PCIB Reg64h[Bit 8]
0: GPIO if not used by
LPC
1: GNT5#
Reg 7Eh[Bit 6]
0: Output
1: Input (Tri-State)
Reg 7Fh[Bit 2] Reg 7Eh[Bit 2] S0
GPIO69/
RTC_IRQ#
GPIO if internal RTC Reg 7Eh[Bit 7]
0: Output
1: Input (Tri-State)
Reg 7Fh[Bit 3] Reg 7Eh[Bit 3] S5
GPIO70/
REQ3#
SMBus Reg5Bh[Bit 4]
0: REQ3#
1: GPIO
Reg 5Ah[Bit 4]
0: Output
1: Input (Tri-state)
Reg 5Bh[Bit 0] Reg 5Ah[Bit 0] S0
GPIO71/
REQ4#
SMBus Reg5Bh[Bit 5]
0: REQ4#
1: GPIO
Reg 5Ah[Bit 5]
0: Output
1: Input (Tri-state)
Reg 5Bh[Bit 1] Reg 5Ah[Bit 1] S0
GPIO72/
GNT#3
SMBus Reg5Bh[Bit 6]
0: GNT3#
1: GPIO
Reg 5Ah[Bit 6]
0: Output
1: Input (Tri-state)
Reg 5Bh[Bit 2] Reg 5Ah[Bit 2] S0
GPIO73/
GNT4#
SMBus Reg5Bh[Bit 7]
0: GNT4#
1: GPIO
Reg 5Ah[Bit 7]
0: Output
1: Input (Tri-state)
Reg 5Bh[Bit 3] Reg 5Ah[Bit 3] S0