Initiating Write Dma; Figure 42. Ultra Dma Cycle Timings (Initiating Write) - IBM DJSA-210 - Travelstar 10 GB Hard Drive Specifications

7.9.3

Initiating Write DMA

DMARQ
DMACK-
STOP
DDMARDY-
HSTROBE
DD(15:0)
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PARAMETER DESCRIPTION
tUI Unlimited interlock time
tACK Setup time for DMACK-
tENV Envelope time
tZIORDY Minimum time before driving IORDY
tLI Limited interlock time
tCYC Cycle time
t2CYC Two cycle time
tDS Data setup time at device
tDH Data Hold time at device

Figure 42. Ultra DMA cycle timings (Initiating Write)

tUI
tENV
tACK
tZIORDY
tACK
Travelstar 32GH/30GT/20GN hard disk drive specifications
tLI
tUI tCYC
WT Data xxx
Host drives DD
MODE 0 MODE 1
MIN MAX MIN
(ns) (ns) (ns)
0 – 0
20 – 20
20 70 20
0 – 0
0 150 0
112 – 73
230 – 154
15 – 10
5 – 5
53
t2CYC
tCYC
tDH
tDS
WT Data
xxx WT Data
MODE 2 MODE 3
MAX MIN MAX MIN MAX
(ns) (ns) (ns) (ns) (ns)
– 0 – 0 –
– 20 – 20 –
70 20 70 20 55
– 0 – 0 –
150 0 150 0 100
– 54 – 39 –
– 115 – 86 –
– 7 – 7 –
– 5 – 5 –
MODE 4
MIN MAX
(ns) (ns)
0 –
20 –
20 55
0 –
0 100
25 –
57 –
5 –
5 –