Initiating Write Dma; Table 36: Ultra Dma Cycle Timing (Initiating Write) - Hitachi HTS421212H9AT00 - Travelstar 120 GB Hard Drive Specifications

7.9.5 Initiating Write DMA

DMARQ
DMACK-
STOP
DDMARDY-
HSTROBE
DD(15:0)

Table 36: Ultra DMA cycle timing (Initiating Write)

PARAMETER
DESCRIPTION
tUI Unlimited interlock time
tACK Setup time for DMACK-
tENV Envelope time
tZIORDY Minimum time before driv-
ing IORDY
tLI Limited interlock time
tCYC Cycle time
t2CYC Two cycle time
tDS Data setup time at device
tDH Data Hold time at device
tUI
tENV
tACK
tZIORDY
tACK
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
MODE 0
MIN MAX
(ns) (ns)
0 –
20 –
20 70
0 –
0 150
112 –
230 –
15 –
5 –
Travelstar 4K120 Hard Disk Drive Specification
tLI
tUI
WT Data
Host drives DD
MODE 1 MODE 2
MIN MAX MIN MAX
(ns) (ns) (ns) (ns)
0 – 0 –
20 – 20 –
20 70 20 70
0 – 0 –
0 150 0 150
73 – 54 –
154 – 115 –
10 – 7 –
5 – 5 –
51
t2CYC
tCYC tCYC
tDH
tDS
WT Data
xxx xxx WT Data
MODE 3 MODE 4
MIN MAX MIN
(ns) (ns) (ns)
0 – 0
20 – 20
20 55 20
0 – 0
0 100 0
39 – 25
86 – 57
7 – 5
5 – 5
MODE 5
MAX MIN MAX
(ns) (ns) (ns)
– 0 –
– 20 –
55 20 55
– 0 –
100 0 75
– 16.8 –
– 38 –
– 4 –
– 4.6 –