IBM IC25N040ATCS04 - Travelstar 40 GB Hard Drive - 7.9.3 Host Terminating Read DMA

7.9.3 Host Terminating Read DMA
DSTROBE
HDMARDY-
DMACK-
DMARQ
STOP
tMLI
tRP
DD(15:0)
tZAH
xxxxxxxxxxxxxxxxxx
xxx
Device drives DD
Host drives DD
tDH
tDS
CRC
tACK
tACK
tRFS
tLI tIORDYZ
xxx RD Data xxxxxxxxxxx
tAZ
tLI
20–20–20–20–20–20–
Maximum time before releasing
IORDY
tIORDYZ
–20–20–20–20–20–20Hold time for DMACK-tACK
–4.6–5–5–5–5–5CRC word hold time at devicetDH
–4–5–7–7–10–15CRC word setup time at devicetDS
–20–20–20–20–20–20Interlock time with minimumtMLI
–20–20–20–20–20–20
Minimum delay time required for
output
tZAH
10–10–10–10–10–10–
Maximum time allowed for
output drivers to release
tAZ
75010001000150015001500Limited interlock timetLI
–85–100–100–100–125–160Ready to pause timetRP
50–60–60–60–70–75–
HDMARDY- to final DSTROBE
time
tRFS
MAX
(ns)
MIN
(ns)
MAX
(ns)
MIN
(ns)
MAX
(ns)
MIN
(ns)
MAX
(ns)
MIN
(ns)
MAX
(ns)
MIN
(ns)
MAX
(ns)
MIN
(ns)
MODE 5MODE 4MODE 3MODE 2MODE 1MODE 0
PARAMETER DESCRIPTION
Figure 42. Ultra DMA cycle timings (Host Terminating Read)
Travelstar 60GH & 40GN hard disk drive specifications
52