Host Terminating Read Dma; Table 30. Ultra Dma Cycle Timing Chart (Host Terminating Read); Table 31. Ultra Dma Cycle Timings (Host Terminating Read) - Hitachi 7K400 - Deskstar Hard Drive Specifications

6.8.3 Host Terminating Read DMA

Table 30: Ultra DMA cycle timing chart (Host terminating Read)
DMARQ
DMACK-
STOP
HDMARDY-
DSTROBE
DD(15:0)
Table 31: Ultra DMA cycle timings (Host terminating Read)
PARAMETER DESCRIPTION
(all values in ns)
tRFS HDMARDY- to final DSTROBE
time
tRP Ready to pause time
tLI Limited interlock time
tAZ Maximum time allowed for output
drivers to release
tZAH Minimum delay time required for
output
tMLI Interlock time with minimum
tCS CRC word setup time at device
tCH CRC word hold time at device
tACK Hold time for DMACK-
tIORDYZ Maximum time before releasing
IORDY
tRP
tRFS
tLI
xxxxxxxxxxxxxxxxxx
xxx RD Data
Device drives DD
MODE 0
MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX
– 75
160 –
0 150
– 10
20 –
20 –
15 –
5 –
20 –
– 20
Deskstar 7K400 Hard Disk Drive Specification
tLI
tMLI
tIORDYZ
tAZ
xxx
tZAH
MODE 1 MODE 2
– 70 – 60
125 – 100 –
0 150 0 150
– 10 – 10
20 – 20 –
20 – 20 –
10 – 7 –
5 – 5 –
20 – 20 –
– 20 – 20
37
tACK
tACK
tCH
tCS
CRC xxxxxxxxxxx
Host drives DD
MODE 3 MODE 4
– 60 – 60
100 – 100 –
0 100 0 100
– 10 – 10
20 – 20 –
20 – 20 –
7 – 5 –
5 – 5 –
20 – 20 –
– 20 – 20
MODE 5
– 50
85 –
0 75
– 10
20 –
20 –
5 –
5 –
20 –
– 20