IBM IC25N005ATDA04, Specifications

Page: 74 / 220

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