 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
AT90USB646 Datasheet(PDF) 277 Page - ATMEL Corporation |
|
|
|||||||||||||||||||||||||||||
AT90USB646 Datasheet(HTML) 277 Page - ATMEL Corporation |
|
|
277 / 456 page  277 7593L–AVR–09/12 AT90USB64/128 • 3-0 - Reserved The value read from these bits is always 0. Do not set these bits. 23.18.2 USB device endpoint registers • 7-3 - Reserved The value read from these bits is always 0. Do not set these bits. • 2-0 - EPNUM2:0 Endpoint Number bits Load by software to select the number of the endpoint which shall be accessed by the CPU. See Section 23.5, page 263 for more details. EPNUM = 111b is forbidden. • 7 - Reserved The value read from these bits is always 0. Do not set these bits. • 6-0 - EPRST6:0 - Endpoint FIFO Reset bits Set to reset the selected endpoint FIFO prior to any other operation, upon hardware reset or when an USB bus reset has been received. See Section 23.3, page 262 for more information Then, clear by software to complete the reset operation and start using the endpoint. • 7-6 - Reserved The value read from these bits is always 0. Do not set these bits. • 5 - STALLRQ - STALL Request Handshake bit Set to request a STALL answer to the host for the next handshake. Cleared by hardware when a new SETUP is received. Clearing by software has no effect. See Section 23.11, page 266 for more details. • 4 - STALLRQC - STALL Request Clear Handshake bit Set to disable the STALL handshake mechanism. Cleared by hardware immediately after the set. Clearing by software has no effect. See Section 23.11, page 266 for more details. Bit 7 654 321 0 - - - - - EPNUM2:0 UENUM Read/write RRR RR R/W R/W R/W Initial value 0 000 000 0 Bit 7 654 321 0 - EPRST6 EPRST5 EPRST4 EPRST3 EPRST2 EPRST1 EPRST0 UERST Read/write R R/W R/W R/W R/W R/W R/W R/W Initial value 0 000 000 0 Bit 7 6 543 2 1 0 - - STALLRQ STALLRQC RSTDT - - EPEN UECONX Read/write R R W W W R R R/W Initial value 0 0 0 0 0 0 0 0 |
|
Link URL |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link to Datasheet | 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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
