Microchip Technology MA330025-1 Data Sheet

 2009-2012 Microchip Technology Inc.

DS70616G-page 403

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

bit 15

bit 8

R/K-0, HS

R/K-0,HS

R/K-0, HS

R/K-0, HS

R/K-0, HS

R/K-0, HS

R/K-0, HS

R/K-0, HS

BTSEF

BUSACCEF

DMAEF

BTOEF

DFN8EF

CRC16EF

CRC5EF

PIDEF

bit 7

bit 0

U = Unimplemented bit, read as ‘0’

R = Readable bit

K = Write ‘1’ to clear bit

HS = Hardware Settable bit

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 15-8

Unimplemented: Read as ‘0’

bit 7

BTSEF: Bit Stuff Error Flag bit
1 = Bit stuff error has been detected
0 = No bit stuff error has been detected

bit 6

BUSACCEF: Bus Access Error Flag bit
1 = Peripheral tried to access an unimplemented RAM location
0 = RAM location access was successful

bit 5

DMAEF: DMA Error Flag bit
1 = A USB DMA error condition is detected

; t

he data size indicated by the buffer descriptor byte count

field is less than the number of received bytes; the received data is truncated

0 = No DMA error

bit 4

BTOEF: Bus Turnaround Time-out Error Flag bit 
1 = Bus turnaround time-out has occurred
0 = No bus turnaround time-out has occurred

bit 3

DFN8EF: Data Field Size Error Flag bit
1 = Data field was not an integral number of bytes
0 = Data field was an integral number of bytes

bit 2

CRC16EF: CRC16 Failure Flag bit
1 = CRC16 failed
0 = CRC16 passed

bit 1

CRC5EF: CRC5 Host Error Flag bit
1 = Token packet rejected due to CRC5 error
0 = Token packet accepted (no CRC5 error)

bit 0

PIDEF: PID Check Failure Flag bit
1 = PID check failed
0 = PID check passed