Microchip Technology MA330025-1 Data Sheet

 2009-2012 Microchip Technology Inc.

DS70616G-page 399

 

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

bit 15

bit 8

R/K-0, HS

U-0

R/K-0, HS

R/K-0, HS

R/K-0, HS

R/K-0, HS

R-0

R/K-0, HS

STALLIF

—

RESUMEIF

IDLEIF

TRNIF

SOFIF

UERRIF

URSTIF

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

STALLIF: STALL Handshake Interrupt bit
1 = A STALL handshake was sent by the peripheral during the handshake phase of the transaction in

Device mode

0 = A STALL handshake has not been sent

bit 6

Unimplemented: Read as ‘0’

bit 5

RESUMEIF: Resume Interrupt bit
1 = A K-State is observed on the D+ or D- pin for 2.5 s (differential ‘1’ for low speed, differential ‘0’ for

full speed)

0 = No K-State is observed

bit 4

IDLEIF: Idle Detect Interrupt bit
1 = Idle condition is detected (constant Idle state of 3 ms or more)
0 = No Idle condition is detected

bit 3

TRNIF: Token Processing Complete Interrupt bit
1 = Processing of current token is complete; read UxSTAT register for endpoint BDT information
0 = Processing of current token is not complete; clear UxSTAT register or load next token from STAT

(clearing this bit causes the the STAT FIFO to advance)

bit 2

SOFIF: Start-of-Frame Token Interrupt bit
1 = A Start-of-Frame token was received by the peripheral
0 = A Start-of-Frame token has not been received by the peripheral

bit 1

UERRIF: USB Error Condition Interrupt bit (read-only)
1 = An unmasked error condition has occurred; only error states enabled in the UxEIE register can set

this bit

0 = No unmasked error condition has occurred

bit 0

URSTIF: USB Reset Interrupt bit
1 = Valid USB Reset has occurred for at least 2.5 s; Reset state must be cleared before this bit can

be reasserted

0 = No USB Reset has occurred