Freescale Semiconductor MCF5480 - Manual (Page 883)

Memory Map/Register Definition
MCF548x Reference Manual, Rev. 3
Freescale Semiconductor 29-9
29.2.2 USB Request, Control, and Status Registers
The following registers provide an application interface to the request, control, and status functionality of
the USB 2.0 device controller.
29.2.2.1 USB Status Register (USBSR)
The USBSR reports the current state of various features of the module. This register is read only.
0xB4D0–
0xB4FF EP3 FIFO registers
0xB500–
0xB52F EP4 FIFO registers
0xB530–
0xB55F EP5 FIFO registers
0xB560–
0xB58F EP6 FIFO registers
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
R Uninitialized
W
Reset Uninitialized
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
R Uninitialized SUSP Uninitialized ISOERREP
W
Reset Uninitialized 0 Uninitialized 0 0 0 0
Reg
Addr
MBAR + 0xB400
Figure 29-2. USB Status Register (USBSR)
Table 29-2. USBSR Field Descriptions
Bits Name Description
31–8 — Reserved, should be cleared.
7 SUSP Suspend. This is the USB suspend indicator.
0 USB is not suspended.
1 USB is suspended.
Table 29-1. USB Memory Map (Continued)
Address
(MBAR +)
Name Byte0 Byte1 Byte2 Byte3