 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
DP8496 Datasheet(PDF) 84 Page - National Semiconductor (TI) |
|
|
|
|||||||||||||||||||||||||||||
DP8496 Datasheet(HTML) 84 Page - National Semiconductor (TI) |
|
|
84 / 92 page  70 AC Specifications (Continued) 726 SCSI ASYNCHRONOUS INFORMATION IN PHASE AS TARGET TLF11212 – 60 ID Symbol Parameter Optimal BCLK Worst Case Units Min Typ Max Min Max 261 iodz IO Valid to SCSI Data Driven 800 1100 800 1700 ns 262 pcreq Phase Change to REQ 400 550 400 800 ns 263 sds Data Setup to REQ (Note 3) (Note 3) ns 264 sdh Data Hold from ACK 00 ns 265 acklreqh ACK Low to REQ High 30 45 TBD ns 266 ackhreql ACK High to REQ Low (Notes 1 and 2) 115 185 TBD ns 267 phack Phase Hold from ACK High 40 40 ns Note 1 bcp refers to the BCLK period in use This formula is tested only at the frequencies listed in Table 81 Note 2 Transfer Period (in Synchronous Transfer register) e 0 If Transfer Period e 1 then add an additional bcp Note 3 This value is programmable It is a functon of the BCLK Frequency bits in SUP1 register and the SCSI clock bits in SDIF2 register The SCSI 1 specification (including cable skew) is 55 ns The SCSI 2 specification (including cable skew) is 25 ns SCSI Clock Bits (10) 00 01 11 10 BCLK 00 10 10 20 15 Freq 01 15 10 20 15 (10) 10 15 10 20 15 11 15 10 20 15 Where 10 is defined as bcp b k k is a characterization constant Where 15 is defined as bcp a bc b k bc is either bcl or bch Where 20 is defined as 2 bcp b k k is a characterization constant All SCSI signals are active-high on the DP8497 84 |
|
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
