User Guide

±`°Ý°ÝÃD

B-6

Manufacturer Model Suggested CAS

Latency Time

5V Tolerance

Samsung KM416511220AT-G12 2 Yes

NEC D4S16162G5-A12-7JF 2 No

Hitachi HM5216805TT10

2 No

Fujitsu 81117822A-100FN

2 No

TMX626812DGE-12

2 Yes

TMS626812DGE-15

3 Yes

TMS626162DGE-15

3 Yes

TMS626162DGE-M67

3 Yes

Q: ¤°»ò¬OUltra DMA/33¡H

A: ³o¬O¤@·sªº³W®æ¡A¥Øªº¦b§ïµ½IDEµwºÐ¤§¶Ç¿é²v¡A¶Ç²Î¤§PIO Mode ¶È¨Ï¥Î IDE

±±¨î«H¸¹¤§¤W½t(Rising edge) ¨Ó¶Ç¿é¸ê®Æ¡ADMA/33¥i¦P®É¨Ï¥Î¤W½t©M¤U½t

(Falling edge) ¡A¦]¦¹¸ê°T¶Ç¿é²v¬OPIO Mode 4 ©Î DMA Mode 2 ªºÂù-¿¡A

(16.6MB/S x 2 = 33MB/S) ¡C

¬O2 byte¡C

Mode Clock per

33MHz

PCI

Clock

count

Cycle time Data Transfer rate

PIO mode 0 30ns 20 600ns (1/600ns) x 2byte = 3.3MB/s

PIO mode 1 30ns 13 383ns (1/383ns) x 2byte = 5.2MB/s

PIO mode 2 30ns 8 240ns (1/240ns) x 2byte = 8.3MB/s

PIO mode 3 30ns 6 180ns (1/180ns) x 2byte = 11.1MB/s

PIO mode 4 30ns 4 120ns (1/120ns) x 2byte = 16.6MB/s

DMA mode 0 30ns 16 480ns (1/480ns) x 2byte = 4.16MB/s

DMA mode 1 30ns 5 150ns (1/150ns) x 2byte = 13.3MB/s

DMA mode 2 30ns 4 120ns (1/120ns) x 2byte = 16.6MB/s

DMA/33 30ns 4 120ns (1/120ns) x 2byte x2 = 33MB/s