Specifications

© 2008 Advanced Micro Devices Inc.
Sample Programs
AMD SB600 BIOS Developer’s Guide (Public Version) Proprietary
Page 62
mov dx,0CFCh
mov al, 07h
out dx,al
; Issue host controller reset through operational register 0
xor ax,ax
mov es,ax ; To access operational registers through BAR
mov eax, es:[ebp]
or eax,02h
mov es:[ebp],eax
; Enables the USB PHY auto calibration resistor
mov eax, 00020000h
mov es[ebp+0C0h], eax
; Program EHCI FIFO threshold.
; Out threshold = 20h, In threshold = 10h for 2lane NB-SB link
; Out threshold = 20h, In threshold = 40h for 4lane NB-SB link
mov eax,00200010h
mov es:[ebp+0A4h],eax
pop es
pop ebp
pop dx
pop eax
ret