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Section 26 USB 2.0 Host/Function Module
Page 1400 of 2108 R01UH0134EJ0400 Rev. 4.00
Sep 24, 2014
SH7262 Group, SH7264 Group
Bit Bit Name
Initial
Value R/W Description
5 SIGN 0 R/W*
1
Setup Transaction Error Interrupt Status
Indicates the status of the setup transaction error
interrupt when the host controller function is
selected.
0: SIGN interrupts not generated
1: SIGN interrupts generated
This module detects the SIGN interrupt when ACK
response is not returned from the peripheral device
three consecutive times during the setup
transactions issued by this module, and sets this bit
to 1. Here, if the corresponding interrupt enable bit
has been set to 1, this module generates the SIGN
interrupt.
Specifically, this module detects the SIGN interrupt
when any of the following response conditions occur
for three consecutive setup transactions.
Timeout is detected when the peripheral device
has returned no response.
A damaged ACK packet is received.
A handshake other than ACK (NAK, NYET, or
STALL) is received.
When the function controller function is selected, the
read value is invalid.