Microchip Technology DV320032 Data Sheet
2012-2013 Microchip Technology Inc.
DS60001185C-page 157
PIC32MX330/350/370/430/450/470
bit 1
CRC5EF: CRC5 Host Error Flag bit
(4)
1 = Token packet rejected due to CRC5 error
0 = Token packet accepted
EOFEF: EOF Error Flag bit
0 = Token packet accepted
EOFEF: EOF Error Flag bit
(3,5)
1 = EOF error condition detected
0 = No EOF error condition
0 = No EOF error condition
bit 0
PIDEF: PID Check Failure Flag bit
1 = PID check failed
0 = PID check passed
1 = PID check failed
0 = PID check passed
REGISTER 11-8:
U1EIR: USB ERROR INTERRUPT STATUS REGISTER (CONTINUED)
Note 1:
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.
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.
2:
This type of error occurs when more than 16-bit-times of Idle from the previous End-of-Packet (EOP)
has elapsed.
has elapsed.
3:
This type of error occurs when the module is transmitting or receiving data and the SOF counter has
reached zero.
reached zero.
4:
Device mode.
5:
Host mode.