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High-Speed USB Host Subsystem
Bits
Field Name
Description
Type
Reset
4
AUTORESUME
Enables the PHY to automatically drive resume signaling.
RW
0x1
On by default.
0x0: AutoResume disabled
0x1: AutoResume enabled
3
CLOCKSUSPENDM
Active low clock suspend for serial modes (6pin/3-pin).
RW
0x0
0x0: ULPI clock will stop during serial modes.
0x1: ULPI clock will run during serial modes.
2
RESERVED
Reserved
R
0x0
1
FSLSSERIALMODE_3PIN
Sets the ULPI interface to 3-pin (FS/LS only) Serial
RW
0x0
Mode. Autocleared when serial mode is exited.
0x0: ULPI is not in 3-pin mode
0x1: ULPI in 3-pin serial mode
0
FSLSSERIALMODE_6PIN
Sets the ULPI interface to 6-pin (FS/LS only) Serial
RW
0x0
Mode. Autocleared when serial mode is exited.
0x0: ULPI is not in 6-pin mode
0x1: ULPI in 6-pin serial mode
Table 22-89. Register Call Summary for Register ULPI_INTERFACE_CTRL_i
High-Speed USB Host Subsystem
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•
High-Speed USB Host Subsystem Register Summary
Table 22-90. ULPI_INTERFACE_CTRL_SET_i
Address Offset
0x0000 0008 + (0x100 * i)
Index
i = 0 to 2
Physical Address
0x4806 2808 + (0x100 * i)
Instance
USBTLL
Description
Enables alternative interfaces and PHY features. 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
AUTORESUME
RESERVED
CLOCKSUSPENDM
FSLSSERIALMODE_3PIN
FSLSSERIALMODE_6PIN
INTERFACE_PROTECT_DISABLE
Bits
Field Name
Description
Type
Reset
7
INTERFACE_PROTECT_DISAB
Controls circuitry built into the PHY for protecting the
RW
0x0
LE
ULPI interface when the link 3-states stp and data.
Write 0x0: No effect on bit value
Write 0x1: Set the bit to 1.
6:5
RESERVED
Reserved
R
0x0
3301
SWPU177N – December 2009 – Revised November 2010
High-Speed USB Host Subsystem and High-Speed USB OTG Controller
Copyright © 2009–2010, Texas Instruments Incorporated