Freescale Semiconductor MCF54455 Reference Manual page 223

Universal Serial Bus Interface – On-The-Go Module
Field
15–12 Number of companion controllers. Indicates number of companion controllers associated with USB OTG
N_CC controller. Always cleared.
11–8 Number ports per CC. Indicates number of ports supported per internal companion controller. This field is 0
N_PCC because no companion controllers are present.
7–5 Reserved, always cleared.
4 Power port control. Indicates whether host controller supports port power control. Always set.
PPC 1 Ports have power port switches.
3–0 Number of ports. Indicates number of physical downstream ports implemented for host applications. Field value
N_PORTS determines how many addressable port registers in the operational register. For the USB OTG module, this is
always 0x1.
10.3.3.4 Host Controller Capability Parameters Register (HCCPARAMS)
Identifies multiple mode control (time-base bit functionality) addressing capability.
Address: 0xFC0B_0108 (HCCPARAMS)
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
R 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
W
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Figure 10-14. Host Controller Capability Parameters Register (HCCPARAMS)
Field
31–16 Reserved, always cleared.
15–8 EHCI extended capabilities pointer. This optional field indicates the existence of a capabilities list.
EECP 0x00 No extended capabilities are implemented. This field is always 0.
7–4 Isochronous scheduling threshold. Indicates where software can reliably update the isochronous schedule,
IST relative to the current position of the executing host controller. This field is always 0.
0 The value of the least significant 3 bits indicates the number of microframes a host controller can hold a set
of isochronous data structures (one or more) before flushing the state.
3 Reserved, always cleared.
2 Asynchronous schedule park capability. Indicates if the host controller supports the park feature for high-speed
ASP queue heads in the asynchronous schedule. The feature can be disabled or enabled and set to a specific level
by using the asynchronous schedule park mode enable and asynchronous schedule park mode count fields in
the USBCMD register. This bit is always set.
0 Park not supported.
1 Park supported.
10-16
Table 10-15. HCSPARAMS Field Descriptions (continued)
Table 10-16. HCCPARAMS Field Descriptions
Description
9 8
EECP
Description
Access: User read-only
7 6 5 4 3 2 1
IST 0 ASP PFL ADC
1 1
Freescale Semiconductor
0
0