Device Terminating Write Dma; Table 30.Ultra Dma Cycle Timing Chart (Device Terminating Write); Table 31.Ultra Dma Cycle Timings (Device Terminating Write) - Hitachi T7K250 - Deskstar - Hard Drive Specifications

6.10.7 Device Terminating Write DMA

Table 30: Ultra DMA cycle timing chart (Device Terminating Write)
DMARQ
DMACK-
STOP
DDMARDY-
HSTROBE
DD(15:0)
Table 31: Ultra DMA cycle timings (Device terminating Write)
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
tRP
tLI
tRFS
tLI
xxx WT Data xxxxxxxxxxxxxxxxxxxxxxxxxx
MODE 0
MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX
– 75
160 –
0 150
20 –
15 –
5 –
20 –
– 20
Deskstar T7K250 Hard Disk Drive Specification
tMLI
tIORDYZ
Host drives DD
MODE 1 MODE 2
– 70 – 60
125 – 100 –
0 150 0 150
20 – 20 –
10 – 7 –
5 – 5 –
20 – 20 –
– 20 – 20
41
tACK
tACK
tCH
tCS
xxxxxxxxxx
CRC
MODE 3 MODE 4
– 60 – 60
100 – 100 –
0 100 0 100
20 – 20 –
7 – 5 –
5 – 5 –
20 – 20 –
– 20 – 20
MODE 5
– 50
85 –
0 75
20 –
5 –
5 –
20 –
– 20