Travelstar 5K160 (PATA) Hard Disk Drive Specification
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7.9.4 Device Terminating Read DMA
PARAMETER
DESCRIPTION
MODE0 MODE1 MODE2 MODE3 MODE4 MODE5
MIN
(ns)
MAX
(ns)
MIN
(ns)
MAX
(ns)
MIN
(ns)
MAX
(ns)
MIN
(ns)
MAX
(ns)
MIN
(ns)
MAX
(ns)
MIN
(ns)
MAX
(ns)
tSS Time
from
DSTROBE edge
to negation of
DMARQ
50
– 50
– 50
– 50
– 50
– 50
–
tLI Limited
interlock
time
0 150 0 150 0 150 0 100 0 100 0 75
tAZ Maximum
time
allowed for
output drivers to
release
– 10 – 10 – 10 – 10 – 10 – 10
tZAH Maximum
delay
time required for
output
20
– 20
– 20
– 20
– 20
– 20
–
tMLI Interlock
time
with minimum
20
– 20
– 20
– 20
– 20
– 20
–
tDS CRC
word
setup
time at device
15
– 10
– 7 – 7 – 5 – 4 –
tDH CRC
word
hold
time at device
5 – 5 – 5 – 5 – 5 – 4.6
–
tACK Hold
time
for
DMACK-
negation
20
– 20
– 20
– 20
– 20
– – –
tIORDYZ Maximum
time
before releasing
IORDY
– 20 – 20 – 20 – 20 – 20 – –
Figure 10. Ultra DMA cycle timings (Device Terminating Read)
DSTROBE
HDMARDY-
DMACK-
DMARQ
STOP
tMLI
DD(15:0)
tZAH
xxxxxxxxxxxxxxxxxx
Device drives DD
Host drives DD
tDH
tDS
CRC
tACK
tACK
tLI
tIORDYZ
xxxxx
xxxxxxxxxx
tSS
tLI
tLI
tAZ