FW322 Datasheet, PDF (30/148 Pages) Agere Systems – 1394A PCI PHY/Link Open Host Controller Interface

FW322
1394A PCI PHY/Link Open Host Controller Interface
Data Sheet, Rev. 1
February 2001
Internal Registers (continued)
Table 16. OHCI Base Address Register Description
Bit
31:12
11:4
3
2:1
0
Field Name
OHCIREG_PTR
OHCI_SZ
OHCI_PF
OHCI_MEMTYPE
OHCI_MEM
Type
RW
R
R
R
R
Description
OHCI Register Pointer. Specifies the upper 20 bits of the 32-bit OHCI
base address register.
OHCI Register Size. This field returns 0s when read, indicating that
the OHCI registers require a 4 Kbyte region of memory.
OHCI Register Prefetch. This bit returns 0 when read, indicating that
the OHCI registers are nonprefetchable.
OHCI Memory Type. This field returns 0s when read, indicating that
the OHCI base address register is 32 bits wide and mapping can be
done anywhere in the 32-bit memory space.
OHCI Memory Indicator. This bit returns 0 when read, indicating that
the OHCI registers are mapped into system memory space.
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