DP8496 datasheet(87/92 Pages) NSC

87 / 92 page

70 AC Specifications (Continued)

730 SCSI SYNCHRONOUS INFORMATION IN PHASE AS TARGET

TLF11212 – 64

Symbol

Parameter

Min

Max

Units

301

syds

Synchronous Data Setup (Note 1)

(Note 1)

302

sydh

Synchronous Data Hold (Note 2)

(Note 2)

303

reqdp

REQ Deassertion Period (Note 3)

(Note 3)

304

reqap

REQ Assertion Period (Note 3)

(Note 3)

305

ackap

ACK Assertion Period

306

ackdp

ACK Deassertion Period

Note 1

The setup time is programmable The following equations determine these typical times

For n e 2 bcp-k

For n e 4 6 (05

(n b 2)

bcp a bc)-k where bc is bcl or bch

For n Odd (05

(n b 1)

bcp)-k

Note 2

The hold time is programmable The following equations determine these typical times

For n e 2 bcp-k

For n e 4 6 (05

bcp a bc)-k where bc is bcl or bch

For n Odd (05

(n a 1)

bcp)-k

Note 3

The ACK assertion and deassertion time is programmable The following equations determine these typical times

For n Even (05

bcp)-k

For n Odd (05

(n b 1)

bcp a bc)-k where bc is bcl or bch

k is a characterization constanttarget value of which is 10 ns

All SCSI signals are active-high on the DP8497

DP8496 Datasheet(PDF) 87 Page - National Semiconductor (TI)

DP8496 Datasheet(HTML) 87 Page - National Semiconductor (TI)

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92

Datasheet Download

Link URL