![]() |
Electronic Components Datasheet Search |
|
AT32UC3A0512 Datasheet(PDF) 86 Page - ATMEL Corporation |
|
|
AT32UC3A0512 Datasheet(HTML) 86 Page - ATMEL Corporation |
86 / 98 page ![]() 86 AT32UC3A 15.5.4 USB 1. USB No end of host reset signaled upon disconnection In host mode, in case of an unexpected device disconnection whereas a usb reset is being sent by the usb controller, the UHCON.RESET bit may not been cleared by the hardware at the end of the reset. Fix/Workaround A software workaround consists in testing (by polling or interrupt) the disconnection (UHINT.DDISCI == 1) while waiting for the end of reset (UHCON.RESET == 0) to avoid being stuck. 2. USBFSM and UHADDR1/2/3 registers are not available. Do not use USBFSM register. Fix/Workaround Do not use USBFSM register and use HCON[6:0] field instead for all the pipes. 15.5.5 Processor and Architecture 1. Incorrect Processor ID The processor ID reads 0x01 and not 0x02 as it should. Fix/Workaround None. 2. Bus error should be masked in Debug mode If a bus error occurs during debug mode, the processor will not respond to debug com- mands through the DINST register. Fix/Workaround A reset of the device will make the CPU respond to debug commands again. 3. Read Modify Write (RMW) instructions on data outside the internal RAM does not work. Read Modify Write (RMW) instructions on data outside the internal RAM does not work. Fix/Workaround Do not perform RMW instructions on data outside the internal RAM. 4. CRC calculation of a locked device will calculate CRC for 512 kB of flash memory, even though the part has less flash. Fix/Workaround The flash address space is wrapping, so it is possible to use the CRC value by calculating CRC of the flash content concatenated with itself N times. Where N is 512 kB/flash size. 5. Need two NOPs instruction after instructions masking interrupts The instructions following in the pipeline the instruction masking the interrupt through SR may behave abnormally. Fix/Workaround Place two NOPs instructions after each SSRF or MTSR instruction setting IxM or GM in SR. 32058KS–AVR32–01/12 |
Similar Part No. - AT32UC3A0512_14 |
|
Similar Description - AT32UC3A0512_14 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |