Travelstar 5K160 (PATA) Hard Disk Drive Specification
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7.9.5 Initiating Write 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)
tUI Unlimited
interlock time
0 – 0 – 0 – 0 – 0 – 0 –
tACK
Setup time for
DMACK-
assertion
20 – 20 – 20 – 20 – 20 – 20 –
tENV
Envelope
time 20 70 20 70 20 70 20 55 20 55 20 55
tZIORDY Minimum
time
before driving
HSTROBE
0 – 0 – 0 – 0 – 0 – 0 –
tLI Limited
interlock
time
0 150
0 150
0 150
0 100
0 100
0 75
tCYC Cycle
time
112
– 73
– 54
– 39
– 25
– 16.8
–
T2CYC Two
cycle
time 230 –
154 –
115 –
86 –
57 –
38 –
tDS
Data setup time
at device
15
– 10
– 7 – 7 – 5 – 4 –
tDH Data
Hold
time
at device
5 – 5 – 5 – 5 – 5 – 4.6
–
Figure 11. Ultra DMA cycle timings (Initiating Write)
HSTROBE
DDMARDY-
DMACK-
DMARQ
STOP
tUI
tACK
tENV
tZIORDY
tLI
tUI
tCYC
t2CYC
DD(15:0)
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxx
xxx
Host drives DD
tDH
tDS
WT Data
WT Data
WT Data
tACK
tCYC