Host Terminating Read Dma; Table 29. Ultra Dma Cycle Timing Chart (Host Terminating Read); Table 30. Ultra Dma Cycle Timings (Host Terminating Read) - Hitachi HDS725050KLA360 Specifications

6.8.3 Host Terminating Read DMA

Table 29: Ultra DMA cycle timing chart (Host terminating Read)
DMARQ
DMACK-
STOP
HDMARDY-
DSTROBE
DD(15:0)
Table 30: 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 driv-
ers to release
tZAH Minimum delay time required for out-
put
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
xxxxxxxxxxxxxxxxxx
xxx RD Data
Device drives DD
MODE 0 MODE 1
MIN MAX MIN
– 75 –
160 – 125
0 150 0
– 10 –
20 – 20
20 – 20
15 – 10
5 – 5
20 – 20
– 20 –
Deskstar 7K500 and Deskstar E7K500 Hard Disk Drive Specification
tLI
tMLI
tLI tIORDYZ
tAZ
xxx
tZAH
MODE 2 MODE 3
MAX MIN MAX MIN
70 – 60 –
– 100 – 100
150 0 150 0
10 – 10 –
– 20 – 20
– 20 – 20
– 7 – 7
– 5 – 5
– 20 – 20
20 – 20 –
37
tACK
tACK
tCH
tCS
CRC xxxxxxxxxxx
Host drives DD
MODE 4 MODE 5
MAX MIN MAX MIN MAX
60 – 60 –
– 100 – 85
100 0 100 0
10 – 10 –
– 20 – 20
– 20 – 20
– 5 – 5
– 5 – 5
– 20 – 20
20 – 20 –
MODE 6
MIN MAX
50 -- 50
– 85 --
75 0 60
10 -- 10
– 20 --
– 20 --
– 5 --
– 5 --
– 20 --
20 -- 20