Specifications

114
AT85C51SND3Bx
7632A–MP3–03/06
Figure 63. USB Device Controller Endpoint Interrupt System
Processing interrupts are generated when the following events are triggered:
• TXINI: ready to accept IN data
• RXOUTI: OUT data received
• RXSTPI: SETUP received
Exception Interrupts are generated when the following events are triggered:
• STALLI: stalled packet
• STALLI: CRC error on OUT in isochronous mode
• OVERFI: overflow in isochronous mode
• UNDERFI: underflow in isochronous mode
• NAKINI: NAK IN sent
• NAKOUTI: NAK OUT sent
FLERRE
UEIENX.7
RXOUTI
UEINTX.2
RXOUTE
UEIENX.2
RXSTPI
UEINTX.3
RXSTPE
UEIENX.3
NAKINI
UEINTX.6
NAKINE
UEIENX.6
OVERFI
UESTA0X.6
STALLI
UEINTX.1
STALLE
UEIENX.1
TXINI
UEINTX.0
TXINE
UEIENX.0
NAKOUTI
UEINTX.4
NAKOUTE
UEIENX.4
Endpoint
s
Interrupt
EPINTn
UEINT.n
UNDERFI
UESTA0X.5
Endpoint n (n= 0-6)