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Section 26 USB 2.0 Host/Function Module
R01UH0134EJ0400 Rev. 4.00 Page 1391 of 2108
Sep 24, 2014
SH7262 Group, SH7264 Group
Bit Bit Name
Initial
Value R/W Description
13 SOFR 0 R/W*
7
Frame Number Refresh Interrupt Status*
4
0: SOF interrupts not generated
1: SOF interrupts generated
(1) When the host controller function is selected
This module sets this bit to 1 on updating the
frame number when the UACT bit has been set
to 1. (This interrupt is detected every 1 ms.)
(2) When the function controller function is selected
This module sets this bit to 1 on updating the
frame number. (This interrupt is detected every 1
ms.)
This module can detect an SOFR interrupt
through the internal interpolation function even
when a damaged SOF packet is received from
the USB host.
12 DVST 0/1*
1
R/W*
7
Device State Transition Interrupt Status*
4
*
6
0: Device state transition interrupts not generated
1: Device state transition interrupts generated
When the function controller function is selected, this
module updates the DVSQ value and sets this bit to
1 on detecting a change in the device state.
When this interrupt is generated, clear the status
before this module detects the next device state
transition.
When the host controller function is selected, the
read value is invalid.