Figure 34. Ultra Dma Cycle Timing Chart (Initiating Write); Figure 35. Ultra Dma Cycle Timings (Initiating Write); Initiating Write Dma - IBM DTLA-305040 - Deskstar 41.1 GB Hard Drive Specifications

7.2.4.5 Initiating Write DMA

DMARQ
DMACK-
STOP
HDMARDY-
DSTROBE
DD(15:00)
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

Figure 34. Ultra DMA cycle timing chart (Initiating Write)

PARAMETER DESCRIPTION
(all values in ns)
tUI Unlimited interlock time
Setup time before –DMACK
tACK
assertion
tENV Envelope time
Wait time before driving
tZIORDY
DSTROBE
tLI Limited interlock time
tCYC Cycle time
t2CYC 2 Cycle time
tDS Data setup time (at device side)
tDH Data hold time (at device side)

Figure 35. Ultra DMA cycle timings (Initiating Write)

tUI
tACK
tZIORDY
tACK
MODE0
MIN
0
20
20
0
0
112
230
15
5
Deskstar 40GV & 75GXP hard disk drive specifications
tENV
tLI
tUI
tDS
WT Data
Host drives DD
MODE1 MODE2
MAX MIN MAX MIN
– 0 – 0
– 20 – 20
70 20 70 20
– 0 – 0
150 0 150 0
– 73 – 54
– 153 – 115
– 10 – 7
– 5 – 5
36
t2CYC
tCYC tCYC
tDH
xxx xxx
WT Data
MODE3 MODE4
MAX MIN MAX MIN MAX
– 0 – 0
– 20 – 20
70 20 55 20
– 0 – 0
150 0 100 0 100
– 39 – 25
– 86 – 57
– 7 – 5
– 5 – 5
WT Data
MODE5
MIN MAX
– 0 –
– 20 –
55 20 50
– 0 –
0 75
– 16.8 –
– 38 –
– 4.0 –
– 4.6 –