Datasheet

Travelstar 80GN Hard Disk Drive Specification
49
7.9.3 Host Terminating Read DMA
Table 30: Ultra DMA cycle timings (Host Terminating Read)
PARAMETER
DESCRIPTION
MODE 0MODE 1MODE 2MODE 3MODE 4MODE 5
MIN
(ns)
MAX
(ns)
MIN
(ns)
MAX
(ns)
MIN
(ns)
MAX
(ns)
MIN
(ns)
MAX
(ns)
MIN
(ns)
MAX
(ns)
MIN
(ns)
MAX
(ns)
tRFS HDMARDY- to final DSTROBE
time
–75–70–60–60–60–50
tRP Ready to pause time 160 – 125 – 100 – 100 – 100 – 85 –
tLI Limited interlock time 0 150 0 150 0 150 0 100 0 100 0 75
tAZ Maximum time allowed for output
drivers to release
–10–10–10–10–10–10
tZAH Minimum delay time required for
output
20–20–20–20–20–20–
tMLI Interlock time with minimum 20 – 20 – 20 – 20 – 20 – 20 –
tCS CRC word setup time at device15–10–7–7–5–4–
tCH CRC word hold time at device 5–5–5–5–5–4.6–
tACK Hold time for DMACK- 20 – 20 – 20 – 20 – 20 – 20 –
tIORDYZ Maximum time before releasing
IORDY
–20–20–20–20–20–20
DSTROBE
HDMARDY-
DMACK-
DMARQ
STOP
tMLI
tRP
DD(15:0)
tZAH
xxxxxxxxxxxxxxxxxx
xxx
Device drives DD
Host drives DD
tCH
tCS
CRC
tACK
tACK
tRFS
tLI tIORDYZ
xxx RD Data xxxxxxxxxxx
tAZ
tLI