5.6 Timing
5.6.3 Ultra DMA data transfer
Figures 5.11 through 5.20 define the timings associated with all phases of Ultra DMA bursts.
Table 5.20 contains the values for the timings for each of the Ultra DMA Modes.
5.6.3.1Initiating an Ultra DMA data in burst
5.6.3.2contains the values for the timings for each of the Ultra DMA Modes.
DMARQ | tUI |
|
|
|
(device) |
|
|
| |
DMACK- |
|
|
|
|
(host) |
|
| tFS |
|
| tACK |
|
| |
| tENV |
|
| |
STOP |
|
| tZAD |
|
(host) | tACK |
|
|
|
| tENV | tFS |
| |
HDMARDY- |
|
|
|
|
(host) |
|
| tZAD |
|
|
|
|
| |
| tZIORDY |
| tZFS |
|
DSTROBE |
|
| tDZFS |
|
(device) |
|
|
| |
| tAZ |
| tVDS | tDVH |
|
|
| ||
DD (15:0) |
|
|
|
|
| tACK |
|
|
|
DA0,DA1,DA2, |
|
|
|
|
|
|
|
| |
| Note: |
|
|
|
The definitions for the STOP,