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

7.9.7 Device Terminating Write DMA

DMARQ
DMACK-
STOP
DDMARDY-
HSTROBE
DD(15:0)
PARAMETER DESCRIPTION
DDMARDY- to final HSTROBE
tRFS
time
tRP Ready to pause time
tLI Limited interlock time
tMLI Interlocking time with minimum
tCS CRC word setup time at device
tCH CRC word hold time at device
tACK Hold time for DMACK-
Maximum time before releasing
tIORDYZ
IORDY

Figure 49. Ultra DMA cycle timings (Device Terminating Write)

tRP
tRFS
xxx WT Data xxxxxxxxxxxxxxxxxxxxxxxxxx
Travelstar 48GH, 30GN & 15GN hard disk drive specifications
tLI tMLI
tIORDYZ
tLI
Host drives DD
MODE 0 MODE 1 MODE 2
MIN MAX MIN MAX MIN
(ns) (ns) (ns) (ns) (ns)
– 75 – 70 –
160 – 125 – 100
0 150 0 150 0
20 – 20 – 20
15 – 10 – 7
5 – 5 – 5
20 – 20 – 20
– 20 – 20 –
60
tACK
tACK
tCH
tCS
CRC xxxxxxxxxx
MODE 3 MODE 4
MAX MIN MAX MIN MAX
(ns) (ns) (ns) (ns) (ns)
60 – 60 – 60
– 100 – 100 –
150 0 100 0 100
– 20 – 20 –
– 7 – 5 –
– 5 – 5 –
– 20 – 20 –
20 – 20 – 20
MODE 5
MIN MAX
(ns) (ns)
– 50
85 –
0 75
20 –
4 –
4.6 –
20 –
– 20