Host Terminating Read Dma; Table 31. Ultra Dma Cycle Timings (Host Terminating Read) - Hitachi 7K100 - Travelstar - Hard Drive Specifications

7.9.3 Host Terminating Read DMA

DMARQ
DMACK-
STOP
HDMARDY-
DSTROBE
DD(15:0)
Table 31: Ultra DMA cycle timings (Host Terminating Read)
PARAMETER
DESCRIPTION
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 mini-
mum
tDS CRC word setup time at
device
tDH CRC word hold time at
device
tACK Hold time for DMACK-
negation
tIORDYZ Maximum time before
releasing IORDY
tLI
tRP
tRFS
tLI
xxx RD Data xxxxxxxxxxxxxxxxxx
Device drives DD
MODE 0 MODE 1
MIN MAX MIN MAX
(ns) (ns) (ns)
– 75 –
160 – 125
0 150 0
– 10 –
20 – 20
20 – 20
15 – 10
5 – 5
20 – 20
– 20 –
Travelstar 7K100 Hard Disk Drive Specification
45
tMLI
tIORDYZ
tAZ tDS
xxx
CRC
tZAH
Host drives DD
MODE 2 MODE 3
MIN MAX MIN
(ns) (ns) (ns) (ns)
70 – 60 –
– 100 – 100
150 0 150 0
10 – 10 –
– 20 – 20
– 20 – 20
– 7 – 7
– 5 – 5
– 20 – 20
20 – 20 –
tACK
tACK
tDH
xxxxxxxxxx
MODE 4 MODE 5
MAX MIN MAX MIN
(ns) (ns) (ns) (ns)
60 – 60 –
– 100 – 85
100 0 100 0
10 – 10 –
– 20 – 20
– 20 – 20
– 5 – 4
– 5 – 4.6
– 20 – 20
20 – 20 –
MAX
(ns)
50
–
75
10
–
–
–
–
–
20