at85c51snd3 ATMEL Corporation, at85c51snd3 Datasheet - Page 113
at85c51snd3
Manufacturer Part Number
at85c51snd3
Description
At85c51snd3 Single-chip Digital Audio Decoder - Encoder With Usb 2.0 Interface
Manufacturer
ATMEL Corporation
Datasheet
1.AT85C51SND3.pdf
(271 pages)
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Interrupts
7632D–MP3–01/07
Figure 62 shows all the device interrupts sources while Figure 63 details the endpoint
interrupt sources.
Figure 62. USB Device Controller Interrupt System
There are 2 kinds of interrupts: processing (i.e. their generation are part of the normal
processing) and exception (errors).
Processing interrupts are generated when the following events are triggered:
•
•
•
•
•
•
•
•
Exception Interrupts are generated when the following events are triggered:
•
•
WAKEUPI
EORSMI
UPRSMI
EORSTI
VBUSTI: VBUS plug-in detection (insert, remove)
UPRSMI: upstream resume
EORSMI: end of resume
WAKEUPI: Wake up
EORSTI: end of reset (Speed Initialization)
SOFI: start of frame (FNCERR= 0)
MSOFI: micro start of frame (FNCERR= 0)
SUSPI: suspend detected after 3 ms of inactivity
SOFI: CRC error in frame number of SOF (FNCERR= 1)
MSOFI: CRC error in frame number of micro-SOF (FNCERR= 1)
MSOFI
UDINT.6
UDINT.5
UDINT.4
UDINT.3
UDINT.2
UDINT.1
UDINT.0
SUSPI
SOFI
WAKEUPE
UPRSME
SUSPE
UDIEN.6
UDIEN.4
UDIEN.2
UDIEN.0
SOFE
EORSME
EORSTE
MSOFE
UDIEN.5
UDIEN.3
UDIEN.1
USB Device
Interrupt
113
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