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©2008 Advanced Micro Devices, Inc.
OCHI USB 1.1 and EHCI USB 2.0 Controllers
AMD SB600 Register Reference Manual Proprietary Page 82
HCSP-PORTROUTE – R - 60 bits - [MEM_Reg : 0Ch]
Description
This optional field is valid only if Port Routing Rules field in the HCSPARAMS register is set to a one. This field is a
15-element nibble array (each 4 bits is one array element). Each array location corresponds one-to-one with a
physical port provided by the host controller.
2.2.3.3 Host Controller Operational Registers (EOR_Reg)
This block of registers is memory-mapped. The base offset, EHCI_EOR, is defined in CAPLENGTH register
(MEM_Reg: 00h, default value = 20h).
Registers Name Offset Address
USB Command – USBCMD EHCI_EOR + 00h
USB Satus – USBSTS EHCI_EOR + 04h
USB Interrupt Enable – USBINTR EHCI_EOR + 08h
USB Frame Index – FRINDEX EHCI_EOR + 0Ch
4G Segment Selector – CTRLDSSEGMENT EHCI_EOR + 10h
Frame List Base Address – PERIODICLISTBASE EHCI_EOR + 14h
Next Asynchronous List Address – ASYNCLISTADDR EHCI_EOR + 18h
Reserved EHCI_EOR + (1Ch~3Fh)
Configured Flag – CONFIGFLAG EHCI_EOR + 40h
Port Status/Control – PORTSC (1-N_PORTS) EHCI_EOR + (44h~68h)
Packet Buffer Threshold Values EHCI_EOR + 84h
USB PHY Status 0 EHCI_EOR + 88h
USB PHY Status 1 EHCI_EOR + 8Ch
USB PHY Status 2 EHCI_EOR + 90h
UTMI Control EHCI_EOR + 94h
Bist Control / Loopback Test EHCI_EOR + 98h
EOR MISC Control EHCI_EOR + 9Ch
USB Phy Calibration EHCI_EOR + A0h
EOR Debug Purpose EHCI_EOR + A8h
USB Debug Port 0E0h~0F0h (* Note)
The base offset of Debug Port registers is defined directly in DBUG_PRT Control register (EHCI_PCI_CFG xE4[28:16]),
regardless of the value in CAPLENGTH register (MEM_Reg: 00h) so range is equivalent to EHCI_EOR + (C0h~D0h).
USBCMD – RW - 32 bits - [EOR_Reg : EHCI_EOR + 00h]
Field Name Bits Default Description
Run/Stop (RS)
0 0b 1=Run, 0=Stop.
When set to a 1, the Host Controller proceeds with execution of the
schedule. The Host Controller continues execution as long as this bit is
set to a 1. When this bit is set to 0, the Host Controller completes the
current and any actively pipelined transactions on the USB and then
halts. The Host Controller must halt within 16 micro-frames after
software clears the Run bit. The HC Halted bit in the status register
indicates when the Host Controller has finished its pending pipelined
transactions and has entered the stopped state. Software must not write
a one to this field unless the host controller is in the Halted state (i.e.
HCHalted in the USBSTS register is a one). Doing so will yield
undefined results.