Datasheet

Travelstar 80GN Hard Disk Drive Specification
50
7.9.4 Device Terminating Read DMA
Table 31: Ultra DMA cycle timings (Device 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)
tSS Time from DSTROBE edge to
negation of DMARQ
50–50–50–50–50–50–
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 Maximum 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 device 15 – 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 – – –
tIORDYZ Maximum time before releasing
IORDY
–20–20–20–20–20– –
DSTROBE
HDMARDY-
DMACK-
DMARQ
STOP
tMLI
DD(15:0)
tZAH
xxxxxxxxxxxxxxxxxx
Device drives DD
Host drives DD
tCH
tCS
CRC
tACK
tACK
tLI
tIORDYZ
xxxxxx xxxxxxxxxx
tSS
tLI
tLI
tAZ