Device Terminating Read Dma; Table 31: Ultra Dma Cycle Timings (Device Terminating Read) - Hitachi IC25N040ATMR04-0 - Travelstar 40GB Laptop Hard Drive 9.5mm 2.5 Inch Notebook HDD Specifications

7.9.4 Device Terminating Read DMA

DMARQ
DMACK-
STOP
HDMARDY-
DSTROBE
DD(15:0)
Device drives DD

Table 31: Ultra DMA cycle timings (Device Terminating Read)

PARAMETER
DESCRIPTION
tSS Time from DSTROBE edge to
negation of DMARQ
tLI Limited interlock time
tAZ Maximum time allowed for output
drivers to release
tZAH Maximum delay time required for
output
tMLI Interlock time with minimum
tCS CRC word setup time at device
tCH CRC word hold time at device
tACK Hold time for DMACK-
tIORDYZ Maximum time before releasing
IORDY
tSS
tLI
tLI
tAZ
xxxxxx
tZAH
MODE 0 MODE 1
MIN MAX MIN
(ns) (ns) (ns)
50 –
0 150
– 10
20 –
20 –
15 –
5 –
20 –
– 20
Travelstar 80GN Hard Disk Drive Specification
50
tMLI
tIORDYZ
tLI
xxxxxxxxxxxxxxxxxx
Host drives DD
MODE 2
MAX MIN MAX
(ns) (ns) (ns)
50 – 50 –
0 150 0 150
– 10 – 10
20 – 20 –
20 – 20 –
10 – 7 –
5 – 5 –
20 – 20 –
– 20 – 20
tACK
tACK
tCH
tCS
xxxxxxxxxx
CRC
MODE 3 MODE 4
MIN MAX MIN MAX
(ns) (ns) (ns) (ns)
50 – 50 –
0 100 0 100
– 10 – 10
20 – 20 –
20 – 20 –
7 – 5 –
5 – 5 –
20 – 20 –
– 20 – 20
MODE 5
MIN MAX
(ns) (ns)
50 –
0 75
– 10
20 –
20 –
4 –
4.6 –
– –
– –