FUJITSU Disk Drives MHJ2181AT - Manual (Page 186)

5.6 Timing
C141-E088-01EN 5-113
5.6.3.9 Device pausing an Ultra DMA data out burst
5.6.3.2 contains the values for the timings for each of the Ultra DMA Modes.
Notes:
1) The device may negate DMARQ to request termination of the Ultra
DMA burst no sooner than t
RP
after DDMARDY- is negated.
2) If the t
SR
timing is not satisfied, the device may receive zero, one or
two more data words from the host.
Figure 5.19 Device pausing an Ultra DMA data out burst