Datasheet

TUSB7320, TUSB7340
SLLSE76E–MARCH 2011– REVISED JULY 2011 www.ti.com
3.3 System Management Interrupt
The TUSB73X0 includes a System Management Interrupt (SMI) pin to allow for USB support in the BIOS
of a system that implements the TUSB73X0. The SMI pin is controlled by the bits in the USB Legacy
Support Control/Status Register. See Section 6.6.2 for more information. If there are no SMI events
pending or if all sources for SMI are disabled, the TUSB73X0 drives the SMI pin low. When an SMI event
occurs and the corresponding event is enabled, the TUSB73X0 drives the SMI pin high until the event is
cleared or disabled.
28 FEATURE/PROTOCOL DESCRIPTIONS Copyright © 2011, Texas Instruments Incorporated
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Product Folder Link(s): TUSB7320 TUSB7340