Renesas RX Series User Manual

R01UH0823EJ0100 Rev.1.00 Page 920 of 1823
Jul 31, 2019
RX23W Group 32. USB 2.0 Host/Function Module (USBc)
32.3.2 Interrupt Sources
Table 32.12 lists the interrupt sources in the USB.
When an interrupt generation condition is satisfied and the interrupt output is enabled using the corresponding interrupt
enable register, a USB interrupt request is issued the Interrupt Controller (ICU) and an USB interrupt will be generated.
Note 1. Though this interrupt can be generated while the host function is selected, it is not usually used with the host function.
Table 32.12 Interrupt Sources
Bit to be
Set Name Interrupt Source
Function
That
Generates
the Interrupt Status Flag
VBINT VBUS interrupt  When a change in the state of the USB0_VBUS input pin has been
detected (low to high or high to low)
Host/function
*1
INTSTS0.
VBSTS
RESM Resume interrupt
 When a change in the state of the USB bus has been detected in the
suspended state (J-state to K-state or J-state to SE0)
Function —
SOFR Frame number update
interrupt
[Host controller is selected]
 When an SOF packet with a different frame number has been transmitted
[Function controller is selected]
 When an SOF packet with a different frame number has been received
Host/function —
DVST Device state transition
interrupt
 When a device state transition has been detected
(any of the following conditions)
A USB bus reset detected
Suspend state detected
SET_ADDRESS request received
SET_CONFIGURATION request received
Function INTSTS0.
DVSQ[2:0]
CTRT Control transfer stage
transition interrupt
 When a stage transition has been detected in control transfer
(any of the following conditions)
Setup stage completed
Control write transfer status stage transition
Control read transfer status stage transition
Control transfer completed
A control transfer sequence error occurred
Function INTSTS0.
CTSQ[2:0]
BEMP Buffer empty interrupt
 When transmission of all data in the buffer memory has been completed
and the buffer has become empty
 When a packet larger than the maximum packet size has been received
Host/function BEMPSTS.
PIPEnBEMP
NRDY Buffer not ready
interrupt
[Host controller is selected]
 When STALL has been received from the peripheral device for the issued
token
 When a response has not been received correctly from the peripheral
device for the issued token (no response was returned three consecutive
times or a packet reception error occurred three consecutive times)
 When an overrun/underrun occurred during isochronous transfer
[Function controller is selected]
 When NAK has been returned for an IN or OUT token while the PID[1:0]
bits are 01b (BUF)
 When a CRC error or a bit stuffing error occurred during data reception in
isochronous transfer
 When an overrun/underrun occurred during data reception in isochronous
transfer
Host/function NRDYSTS.
PIPEnNRDY
BRDY Buffer ready interrupt
 When the buffer has become ready (reading or writing is enabled) Host/function BRDYSTS.
PIPEnBRDY
OVRCR Overcurrent input
change interrupt
 When a change in the state of the USB0_OVRCURA or
USB0_OVRCURB input pin has been detected (low to high or high to
low)
Host INTSTS1.
OVRCR
BCHG Bus change interrupt
 When a change of USB bus state has been detected Host/function SYSSTS0.
LNST[1:0]
DTCH Disconnection
detection during full-
speed operation
 When disconnection of a peripheral device has been detected in full-
speed operation
Host DVSTCTR0.
RHST[2:0]
ATTCH Device connection
detection
 When J-state or K-state is detected on the USB port for 2.5 µs. Used for
checking whether a peripheral device is connected.
Host —
EOFERR EOF error detection
 When an EOF error of a peripheral device has been detected Host —
SACK Normal setup
operation
 When the normal response (ACK) for the setup transaction has been
received
Host —
SIGN Setup error
 When a setup transaction error (no response or ACK packet corruption)
was detected three consecutive times
Host —
PDDETINT0 Portable device
detection interrupt
 When connection of the portable device has been detected Host INTSTS1.
PDDETINT0

Renesas RX Series Specifications

General

Brand	Renesas
Model	RX Series
Category	Microcontrollers
Language	English