Host Terminating Read Dma; Table 28.Ultra Dma Cycle Timing Chart (Host Pausing Read); Table 29.Ultra Dma Cycle Timings (Host Pausing Read) - Hitachi 7K80 - Deskstar - Hard Drive Specifications

6.8.3 Host Terminating Read DMA

Table 28: Ultra DMA cycle timing chart (Host pausing Read)
DMARQ
DMACK-
STOP
HDMARDY-
DSTROBE
DD(15:0)
Table 29: Ultra DMA cycle timings (Host pausing Read)
PARAMETER DESCRIP-
TION
(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-
tIO- Maximum time before
RDYZ releasing IORDY
tRP
tRFS
tLI
xxxxxxxxxxxxxxxxxx
xxx RD Data
Device drives DD
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
– 10 – 10
20 – 20 –
20 – 20 –
15 – 10 –
5 – 5 –
20 – 20 –
– 20 – 20
Deskstar 7K80 Hard Disk Drive Specification
tLI
tMLI
tIORDYZ
tAZ
xxx
tZAH
MODE 2 MODE 3
– 60 – 60
100 – 100 –
0 150 0 100
– 10 – 10
20 – 20 –
20 – 20 –
7 – 7 –
5 – 5 –
20 – 20 –
– 20 – 20
44
tACK
tACK
tCH
tCS
CRC xxxxxxxxxxx
Host drives DD
MODE 4 MODE 5
– 60 – 50
100 – 85 –
0 100 0 75
– 10 – 10
20 – 20 –
20 – 20 –
5 – 5 –
5 – 5 –
20 – 20 –
– 20 – 20
MODE 6
– 50
85 –
0 60
– 10
20 –
20 –
5 –
5 –
20 –
– 20