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AMD SB700/710/750 Register Programming Requirements

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4.12 Enabling AB and BIF Clock Gating<br />

ASIC Rev <strong>Register</strong> Settings Function/Comment<br />

All Revs SB7x0<br />

ABCFG 0x54[24] = 0<br />

ABCFG 0x10054[24] = 1<br />

ABCFG 0x98[11:8] = 0x7<br />

SATA USB SMBUS PATA AC97 HD AUDIO LPC PCI<br />

RTC ACPI PM REG A-LINK I/O REG XIOAPIC<br />

X<br />

4.13 Enabling AB Int_Arbiter Enhancement<br />

ASIC Rev <strong>Register</strong> Settings Function/Comment<br />

All Revs SB7x0<br />

ABCFG 0x10054[15:0] = 0x07FF<br />

SATA USB SMBUS PATA AC97 HD AUDIO LPC PCI<br />

RTC ACPI PM REG A-LINK I/O REG XIOAPIC<br />

X<br />

4.14 Enabling Requester ID<br />

ASIC Rev <strong>Register</strong> Settings Function/Comment<br />

All Revs SB7x0 ABCFG 0x98[16] = 1<br />

SATA USB SMBUS PATA AC97 HD AUDIO LPC PCI<br />

RTC ACPI PM REG A-LINK I/O REG XIOAPIC<br />

X<br />

For register details, refer to<br />

the sections check-marked<br />

in the <strong>SB700</strong>/<strong>710</strong>/<strong>750</strong><br />

<strong>Register</strong> Reference Guide.<br />

For register details, refer to<br />

the sections check-marked<br />

in the <strong>SB700</strong>/<strong>710</strong>/<strong>750</strong><br />

<strong>Register</strong> Reference Guide.<br />

For register details, refer to<br />

the sections check-marked<br />

in the <strong>SB700</strong>/<strong>710</strong>/<strong>750</strong><br />

<strong>Register</strong> Reference Guide.<br />

4.15 Selecting the LPC FRAME# Assertion Timing on Power-up<br />

ASIC Rev <strong>Register</strong> Settings Function/Comment<br />

SB7x0 A14 and<br />

above<br />

Lpc_PCI_config 0x8C [17] = 0<br />

SATA USB SMBUS PATA AC97 HD AUDIO LPC PCI<br />

x<br />

RTC ACPI PM REG A-LINK I/O REG XIOAPIC<br />

For register details, refer to<br />

the sections check-marked<br />

in the <strong>SB700</strong>/<strong>710</strong>/<strong>750</strong><br />

<strong>Register</strong> Reference Guide.<br />

© 2009 Advanced Micro Devices, Inc. A-Link Express Settings - Indirect I/O Access<br />

<strong>AMD</strong> <strong>SB700</strong>/<strong>710</strong>/<strong>750</strong> <strong>Register</strong> <strong>Programming</strong> <strong>Requirements</strong> Page 36

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