Device Terminating Write Dma; Table 30: Ultra Dma Cycle Timing Chart (Device Terminating Write); Table 31: Ultra Dma Cycle Timings (Device Terminatingwrite) - Hitachi HDT725025VLA380 - Deskstar 0A33423 T7K500 250GB SATA 7200RPM 8MB Cache Hard Drive Specifications

6.9.7 Device Terminating Write DMA

Table 30: Ultra DMA cycle timing chart (Device Terminating Write)

DMARQ
DMACK-
STOP
DDMARDY-
HSTROBE
DD(15:0)
PARAMETER
DESCRIPTION
(all values in ns)
tRFS DDMARDY- to final
HSTROBE time
tRP Ready to pause time
tLI Limited interlock time
tMLI Interlocking time with
minimum
tCS CRC word setup time at
device
tCH CRC word hold time at
device
tACK Hold time for DMACK-
negation
tIORDYZ Maximum time before
releasing IORDY

Table 31: Ultra DMA cycle timings (Device TerminatingWrite)

tRP
tLI
tRFS
tLI
xxx WT Data xxxxxxxxxxxxxxxxxxxxxxxxxx
MODE 0 MODE 1
MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX
– 75 – 70
160 – 125 –
0 150 0 150
20 – 20 –
15 – 10 –
5 – 5 –
20 – 20 –
– 20 – 20
Deskstar T7K500 Hard Disk Drive Specification
tMLI
tIORDYZ
Host drives DD
MODE 2 MODE 3
– 60 – 60
100 – 100 –
0 150 0 100
20 – 20 –
7 – 7 –
5 – 5 –
20 – 20 –
– 20 – 20
38
tACK
tACK
tCH
tCS
xxxxxxxxxx
CRC
MODE 4 MODE 5
– 60 – 50
100 – 85 –
0 100 0 75
20 – 20 –
5 – 5 –
5 – 5 –
20 – 20 –
– 20 – 20
MODE 6
– 50
85 –
0 60
20 –
5 –
5 –
20 –
– 20