 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
S3C2440X Datasheet(PDF) 89 Page - Samsung semiconductor |
|
|
|||||||||||||||||||||||||||||
S3C2440X Datasheet(HTML) 89 Page - Samsung semiconductor |
|
|
89 / 429 page  2003.09.25 Preliminary product information describes products that are in development, for which full characterization data and associated errata are not yet available Specifications and information herein are subject to change without notice. S3C2440X CLOCK & POWER MANAGEMENT 7 -7 Change PLL Settings In Normal Operation Mode During the operation of the S3C2440X in NORMAL mode, the user can change the frequency by writing the PMS value and the PLL lock time will be automatically inserted. During the lock time, the clock is not supplied to the internal blocks in the S3C2440X. Figure 7-5 shows the timing diagram. Mpll PMS setting PLL Lock-time FCLK It changes to new PLL clock after automatic lock time. Figure 7-5. Changing Slow Clock by Setting PMS Value USB Clock Control USB host interface and USB device interface needs 48Mhz clock. In the S3C2440X, the USB dedicated PLL (UPLL) generates 48Mhz for USB. UCLK does not fed until the PLL (UPLL) is configured. Condition UCLK State UPLL State After reset XTlpll or EXTCLK On After configuring UPLL L : during PLL lock time 48MHz: after PLL lock time On UPLL is turned off by CLKSLOW register XTlpll or EXTCLK Off UPLL is turned on by CLKSLOW register 48MHz On |
Similar Part No. - S3C2440X |
|
Similar Description - S3C2440X |
|
|
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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
