IBM IC25N020ATDA04 - Travelstar 20 GB Hard Drive - Device Terminating Write DMA; Figure 49. Ultra DMA Cycle Timings (Device Terminating Write)

7.9.7 Device Terminating Write DMA
HSTROBE
DDMARDY-
DMACK-
DMARQ
STOP
tMLI
tRP
DD(15:0)
xxxxxxxxxxxxxxxxxxxxxxxxxx
Host drives DD
tCH
tCS
CRC
tLI
tACK
tACK
tRFS
tLI
tIORDYZ
xxx WT Data xxxxxxxxxx
20–20–20–20–20–20–
Maximum time before releasing
IORDY
tIORDYZ
–
20
–
20
–
20
–
20
–
20
–
20
Hold time for DMACK-
tACK
–
4.6
–
5
–
5
–
5
–
5
–
5
CRC word hold time at device
tCH
–
4
–
5
–
7
–
7
–
10
–
15
CRC word setup time at device
tCS
–
20
–
20
–
20
–
20
–
20
–
20
Interlocking time with minimum
tMLI
75
0
100
0
100
0
150
0
150
0
150
0
Limited interlock time
tLI
–
85
–
100
–
100
–
100
–
125
–
160
Ready to pause time
tRP
50–60–60–60–70–75–
DDMARDY- to final HSTROBE
time
tRFS
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 49. Ultra DMA cycle timings (Device Terminating Write)
Travelstar 48GH, 30GN & 15GN hard disk drive specifications
60