mc9s08jm16 Freescale Semiconductor, Inc, mc9s08jm16 Datasheet - Page 325

• Manufacturer Part Number: mc9s08jm16
• Description: S08jm 8-bit Usb Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

17.4.8
Interrupts from the INTSTAT register signify events which occur during normal operation
frame tokens (TOKSOF), packet completion (TOKDNE), USB bus reset (USBRST), endpoint errors
(ERROR), suspend and resume (SLEEP and RESUME), and endpoint stalled (STALL).
The ERRSTAT interrupts carry information about specific types of errors, which is needed on an
application specific basis. Using ERRSTAT, an application can determine exactly why a packet transfer
failed
Both registers are maskable via the INTENB and ERRENB registers. The INTSTAT and ERRSTAT are
used to signal interrupts in a two-level structure. Unmasked interrupts from the ERRSTAT register are
reported in the INTSTAT register.
Note that the interrupt registers work in concert with the STAT register. On receipt of an INTSTAT
interrupt, software can check the STAT register and determine which BDT entry was affected by the
transaction.
Freescale Semiconductor
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USB transceiver disabled
USBDP pullup disabled
Endpoints disabled
USB address register set to zero
due to CRC error, PID check error and so on.
Interrupts
MC9S08JM16 Series Data Sheet, Rev. 2
Universal Serial Bus Device Controller (S08USBV1)
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USB start of
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