7.9.7 Device Terminating Write DMA
DMARQ
DMACK-
STOP
DDMARDY-
HSTROBE
DD(15:0)
Table 34: Ultra DMA cycle timings (Device TerminatingWrite)
PARAMETER
DESCRIPTION
tRFS
DDMARDY- to final
HSTROBE time
tRP
Ready to pause time
tLI
Limited interlock time
tMLI
Interlocking time with mini-
mum
tDS
CRC word setup time at
device
tDH
CRC word hold time at
device
tACK
Hold time for DMACK-
negation
tIORDYZ
Maximum time before
releasing IORDY
tRP
tLI
tRFS
tLI
xxx WT Data
xxxxxxxxxxxxxxxxxxxxxxxxxx
Host drives DD
MODE 0
MODE 1
MIN
MAX
MIN
MAX
(ns)
(ns)
(ns)
(ns)
–
75
–
70
160
–
125
–
0
150
0
150
20
–
20
–
15
–
10
–
5
–
5
–
20
–
20
–
–
20
–
20
Travelstar 5K80 Hard Disk Drive Specification
49
tMLI
tACK
tIORDYZ
tACK
tDH
tDS
CRC
xxxxxxxxxx
MODE 2
MODE 3
MIN
MAX
MIN
MAX
(ns)
(ns)
(ns)
(ns)
–
60
–
60
100
–
100
–
0
150
0
100
20
–
20
–
7
–
7
–
5
–
5
–
20
–
20
–
–
20
–
20
MODE 4
MODE 5
MIN
MAX
MIN
MAX
(ns)
(ns)
(ns)
(ns)
–
60
–
50
100
–
85
–
0
100
0
75
20
–
20
–
5
–
4
–
5
–
4.6
–
20
–
20
–
–
20
–
20