Texas Instruments OMAP5912 Reference Manual page 1374

USB Device Controller
Table 39. System Configuration Register 2 (SYSCON2)
Bit Name
15:7 −
6 RMT_WKP
5 STALL_CMD
4 Reserved
3 DEV_CFG
82 Universal Serial Bus (USB)
Description
Reserved
The set-only remote wake-up bit, when written with a 1, initiates the remote
wake-up sequence even if DEVSTAT.R_WK_OK bit was not previously set to 1 by
the USB host. Reading this bit always returns 0. Writing 0 into this bit has no
effect. To generate a resume, the software must check the remote wake-up
enable value before initiating any wake-up sequence:
0: No action
1: Initiates the remote wake-up sequence
Always read 0
The set-only stall command bit only concerns non-autodecoded requests on
control endpoint (EP0).This is asserted in response to a USB command where
either the command itself or its data is invalid. Asserting this bit forces the
non-autodecoded command to complete with a STALL handshake. It has no
effect for autodecoded requests.
0: No action
1: Stall current USB command
Always read 0
Reserved
If the USB device controller receives a SET_CONFIGURATION with a valid
configuration value, and the device is in addressed state, it must write a 1 to the
device configured (DEV_CFG) bit to inform the command decode that the device
moves to configured state.
The core sets the DEVSTAT.CFG bit to 1. If the device is already configured when
the SET_CONFIGURATION request is received, the USB device controller does
not have to set this bit. If the new configuration value is 0, USB device controller
must set the SYSCON2.CLR_CFG bit to move to addressed state.
Reading this bit always returns 0. Writing 0 into this bit has no effect.
0: No action
1: Allows DEVSTAT.CFG to be set
Always read 0
SPRU761A