Device Terminating Read Dma; Figure 41. Ultra Dma Cycle Timings (Device Terminating Read) - IBM DJSA-210 - Travelstar 10 GB Hard Drive Specifications

7.9.2

Device Terminating Read DMA

DMARQ
DMACK-
STOP
HDMARDY-
DSTROBE
DD(15:0)
Device drives DD
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
tDS CRC word setup time at device
tDH CRC word hold time at device
tACK Hold time for DMACK-
tIORDYZ Maximum time before releasing IORDY

Figure 41. Ultra DMA cycle timings (Device Terminating Read)

tSS
tLI
tLI
tAZ
xxxxxx
tZAH
Travelstar 32GH/30GT/20GN hard disk drive specifications
tMLI
tIORDYZ
tLI
xxxxxxxxxxxxxxxxxx
Host drives DD
MODE 0 MODE 1
MIN MAX MIN MAX
(ns) (ns) (ns) (ns)
50 – 50 –
0 150 0 150
– 10 – 10
20 – 20 –
20 – 20 –
15 – 10 –
5 – 5 –
20 – 20 –
– 20 – 20
52
tACK
tACK
tDH
tDS
xxxxxxxxxx
CRC
MODE 2 MODE 3 MODE 4
MIN MAX MIN MAX MIN
(ns) (ns) (ns) (ns) (ns)
50 – 50 – 50
0 150 0 100 0
– 10 – 10 –
20 – 20 – 20
20 – 20 – 20
7 – 7 – 5
5 – 5 – 5
20 – 20 – 20
– 20 – 20 –
MAX
(ns)
–
100
10
–
–
–
–
–
20