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High-Speed USB Host Subsystem
7
6
5
4
3
2
1
0
RESERVED
IDGND_FALL
SESSEND_FALL
SESSVALID_FALL
VBUSVALID_FALL
HOSTDISCONNECT_FALL
Bits
Field Name
Description
Type
Reset
7:5
RESERVED
Reserved
R
0x0
4
IDGND_FALL
Generate an interrupt event notification when IdGnd
RW
0x1
changes from high to low.
Event is automatically masked if IdPullup bit is cleared to
0 and for 50 ms after IdPullup is set to 1.
3
SESSEND_FALL
Generate an interrupt event notification when SessEnd
RW
0x1
changes from high to low.
2
SESSVALID_FALL
Generate an interrupt event notification when SessValid
RW
0x1
changes from high to low. SessValid is the same as
UTMI+ AValid.
1
VBUSVALID_FALL
Generate an interrupt event notification when VbusValid
RW
0x1
changes from high to low.
0
HOSTDISCONNECT_FALL
Generate an interrupt event notification when
RW
0x1
Hostdisconnect changes from high to low. Applicable only
in host mode (DpPulldown and DmPulldown both set to
1b).
Table 22-107. Register Call Summary for Register ULPI_USB_INT_EN_FALL_i
High-Speed USB Host Subsystem
•
•
High-Speed USB Host Subsystem Register Summary
Table 22-108. ULPI_USB_INT_EN_FALL_SET_i
Address Offset
0x0000 0011 + (0x100 * i)
Index
i = 0 to 2
Physical Address
0x4806 2811 + (0x100 * i)
Instance
USBTLL
Description
Enables an interrupt event notification when the corresponding status bit changes from high to low.
Read/set address (write 1 to a bit to set it to 1; writing 0 has no effect on bit value). See fields
description at the read/write address of the same register.
Type
RW
7
6
5
4
3
2
1
0
RESERVED
IDGND_FALL
SESSEND_FALL
SESSVALID_FALL
VBUSVALID_FALL
HOSTDISCONNECT_FALL
3309
SWPU177N – December 2009 – Revised November 2010
High-Speed USB Host Subsystem and High-Speed USB OTG Controller
Copyright © 2009–2010, Texas Instruments Incorporated