 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
SH7721 Datasheet(PDF) 512 Page - Renesas Technology Corp |
|
|
|||||||||||||||||||||||||||||
SH7721 Datasheet(HTML) 512 Page - Renesas Technology Corp |
|
|
512 / 1524 page  Section 10 Direct Memory Access Controller (DMAC) Rev. 3.00 Jan. 18, 2008 Page 450 of 1458 REJ09B0033-0300 (4) DREQ Pin Detection Timing Charts CKIO Bus cycle DREQ (rising edge) DACK (active-high) CPU DMAC write or read First acceptance Second acceptance Third acceptance (possible) Dead zone Dead zone Acceptance started Acceptance started Dead zone Figure 10.19 Timing of DREQ Input Detection by Edge Detection in Cycle Stealing Mode (DACK is Divided into Four due to Idle Cycle Insertion between Access Cycles and So DREQ Sampling is Accepted One Extra Time) CKIO Bus cycle DREQ (rising edge) DACK (active-high) CPU DMAC write or read First acceptance Second acceptance Dead zone Dead zone Acceptance started Acceptance started Third acceptance Dead zone Figure 10.20 Timing of DREQ Input Detection by Edge Detection in Cycle Stealing Mode (DACK is Not Divided By Idle Cycle Insertion between Access Cycles and So DREQ Sampling is Accepted Normally) |
|
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
