 |
Motore di ricerca datesheet componenti elettronici |
|
|
Motore di ricerca datesheet componenti elettronici |
|
AT83SND1CXXX-ROTIL Scheda tecnica(PDF) 94 Page - ATMEL Corporation |
|
|
|||||||||||||||||||||||||||||
AT83SND1CXXX-ROTIL Scheda tecnica(HTML) 94 Page - ATMEL Corporation |
|
|
94 / 212 page  94 4109J–8051–10/06 AT8xC51SND1C The firmware has to clear the SPINT bit in the USBINT register before any other USB operation in order to wake up the USB controller from its Suspend mode. The USB controller is then re-activated. Figure 14-13. Example of a Suspend/Resume Management 14.8.3 Upstream Resume A USB device can be allowed by the Host to send an upstream resume for Remote Wake-up purpose. When the USB controller receives the SET_FEATURE request: DEVICE_REMOTE_WAKEUP, the firmware should set to 1 the RMWUPE bit in the USBCON register to enable this functional- ity. RMWUPE value should be 0 in the other cases. If the device is in SUSPEND mode, the USB controller can send an upstream resume by clear- ing first the SPINT bit in the USBINT register and by setting then to 1 the SDRMWUP bit in the USBCON register. The USB controller sets to 1 the UPRSM bit in the USBCON register. All clocks must be enabled first. The Remote Wake is sent only if the USB bus was in Suspend state for at least 5ms. When the upstream resume is completed, the UPRSM bit is reset to 0 by hardware. The firmware should then clear the SDRMWUP bit. USB Controller Init Detection of a SUSPEND State SPINT Set SUSPCLK Disable PLL microcontroller in Power-down Detection of a RESUME State WUPCPU Enable PLL Clear SUSPCLK Clear WUPCPU Bit Clear SPINT |
|
Link URL |
| Lei ha avuto il aiuto da alldatasheet? [ DONATE ] |
Di alldatasheet | Richest di pubblicita | contatti | Privacy Policy | Collegamento alla scheda tecnica | scambio Link | Ricerca produttore 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 |
Italian ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
