IBM IC25N040ATCS04 - Travelstar 40 GB Hard Drive, Specifications

Page: 67 / 217

7.9.5 Initiating Write DMA
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
– 4.6 – 5 – 5 – 5 – 5 – 5 Data Hold time at device tDH
– 4 – 5 – 7 – 7 – 10 – 15 Data setup time at device tDS
– 38 – 57 – 86 – 115 – 154 – 230 Two cycle time t2CYC
– 16.8 – 25 – 39 – 54 – 73 – 112 Cycle time tCYC
75 0 100 0 100 0 150 0 150 0 150 0 Limited interlock time tLI
– 0 – 0 – 0 – 0 – 0 – 0
Minimum time before driving
IORDY
tZIORDY
55 20 55 20 55 20 70 20 70 20 70 20 Envelope time tENV
– 20 – 20 – 20 – 20 – 20 – 20 Setup time for DMACK- tACK
– 0 – 0 – 0 – 0 – 0 – 0 Unlimited interlock time tUI
MAX
(ns)
MIN
(ns) MAX
(ns)
MIN
(ns) MAX
(ns)
MIN
(ns) MAX
(ns)
MIN
(ns) MAX
(ns)
MIN
(ns) MAX
(ns)
MIN
(ns)
MODE 5 MODE 4 MODE 3 MODE 2 MODE 1 MODE 0
PARAMETER DESCRIPTION
Figure 44. Ultra DMA cycle timings (Initiating Write)
Travelstar 60GH & 40GN hard disk drive specifications
54