PIC32MX440F256H-80I Datasheet, PDF (263/646 Pages) Microchip Technology – 64/100-Pin General Purpose and USB 32-Bit Flash Microcontrollers

PIC32MX3XX/4XX
REGISTER 11-8: U1EIR: USB ERROR INTERRUPT STATUS REGISTER
bit 1
CRC5EF: CRC5 Host Error Flag bit⁽³⁾ (Device Mode)
Write a ‘1’ to this bit to clear the interrupt.
1 = Token packet rejected due to CRC5 error
0 = Token packet accepted
EOFEF: EOF Error Flag bit (Host Mode)
1 = EOF error condition detected
0 = No EOF error condition
bit 0
PIDEF: PID Check Failure Flag bit
1 = PID check failed
0 = PID check passed
Note 1:
2:
3:
4:
This type of error occurs when the module’s request for the DMA bus is not granted in time to service the
module’s demand for memory, resulting in an overflow or underflow condition, and/or the allocated buffer
size is not sufficient to store the received data packet causing it to be truncated.
This type of error occurs when more than 16 bit-times of Idle from the previous (End-of-Packet) EOP
has elapsed.
This type of error occurs when the module is transmitting or receiving data and the SOF counter has
reached zero.
Device mode.
5: Host mode.
© 2008 Microchip Technology Inc.
Preliminary
DS61143E-page 261