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717
USB Controller Module
Global Control and Status register

Address: 9010 0000

The Global Control and Status register contains all USB global and status information.

The USB can operate as a device or host, but cannot operate as both simultaneously

unless used in feedback mode. Feedback mode is useful for development and testing

only. The inactive block (host or device) is held in reset.

Register bit assignment
Bits Access Mnemonic Reset Description
D31:13 N/A Not used 0x00000 Always read as 0.
D12 R DISABLE
(DSABL) 0Disable
0 Indicates that USB is enabled
1 Indicates that USB is disable
Indicates whether USB is disabled or enabled.
D11 R HRST 1 Host reset
0 Indicates that the host block is enabled
1 Indicates that the host block is in reset
Provides the host block reset status.
D10:09 R DRST 11 Device reset
00 Indicates that the device block is enabled
01 Indicates that the device block is in reset
Provides the device block reset status.
D08:06 N/A Reserved N/A N/A

Table 417: Global Control and Status register

Not used
13121110987654321015 14
31 29 28 27 26 25 24 23 22 21 20 19 18 17 1630
Not used
Not used DSABL HRST DRST Reserved SUSP WKUP Not
used
HST
DV