Texas Instruments OMAP5912 Reference Manual page 1328

USB Host Controller
Table 9. HC Current Periodic Register (HCPERIODCURRENTED)
Bit Name
31:4 PCED
3 :0 Reserved
Table 10. HC Head Control Register (HCCONTROLHEADED)
Bit Name
31:4 CHED
3 :0 Reserved
36 Universal Serial Bus (USB)
The HC current periodic register defines the physical address of the next
endpoint descriptor (ED) on the periodic ED List.
Description
Physical address of current ED on the periodic ED list.
This field represents bits 31:4 of the physical address of
the next ED on the periodic ED List. EDs are assumed to
begin at 16-byte-aligned address, so bits 3:0 of this
pointer are assumed to be 0. See Section 2.9, Physical
Addressing, for the restrictions on physical addresses.
Reserved
The HC head control register defines the physical address of the head ED of
the control ED list.
Description
Physical address of head ED on the control ED list
This field represents bits 31:4 of the physical address of the
head ED on the control ED list. EDs are assumed to begin at
16-byte-aligned address, so bits 3:0 of this pointer are
assumed to be 0. See Section 2.9, Physical Addressing, for
the restrictions on physical addresses.
Reserved
The HC current control register defines the physical address of the next ED
on the control ED list.
Type Reset
R 0x0000000
R 0x0
Type Reset
R/W 0x0000000
R 0x0
SPRU761A