FUJITSU MHE2064AT - Manual (Page 178)

5.6 Timing
C141-E057-01EN 5-103
5.6.4.4 Host pausing an Ultra DMA data in burst
5.6.4.2 contains the values for the timings for each of the Ultra DMA Modes.
Notes:
1) The host may assert STOP to request termination of the Ultra DMA
burst no sooner than t
RP
after HDMARDY- is negated.
2) If the t
SR
timing is not satisfied, the host may receive zero, one or
two more data words from the device.
Figure 5.15 Host pausing an Ultra DMA data in burst