Hitachi IC25N010ATCS04, Технические характеристики

Страница: 66 / 217

7.9.4 Device Terminating Read DMA
DSTROBE
HDMARDY-
DMACK-
DMARQ
STOP
tMLI
DD(15:0)
tZAH
xxxxxxxxxxxxxxxxxx
Device drives DD
Host drives DD
tDH
tDS
CRC
tACK
tACK
tLI tIORDYZ
xxxxxx xxxxxxxxxx
tSS
tLI
tLI
tAZ
– – 20 – 20 – 20 – 20 – 20 –
Maximum time before releasing
IORDY tIORDYZ
– – – 20 – 20 – 20 – 20 – 20 Hold time for DMACK- tACK
– 4.6 – 5 – 5 – 5 – 5 – 5 CRC word hold time at device tDH
– 4 – 5 – 7 – 7 – 10 – 15 CRC word setup time at device tDS
– 20 – 20 – 20 – 20 – 20 – 20 Interlock time with minimum tMLI
– 20 – 20 – 20 – 20 – 20 – 20
Maximum delay time required
for output tZAH
10 – 10 – 10 – 10 – 10 – 10 –
Maximum time allowed for
output drivers to release tAZ
75 0 100 0 100 0 150 0 150 0 150 0 Limited interlock time tLI
– 50 – 50 – 50 – 50 – 50 – 50
Time from DSTROBE edge to
negation of DMARQ tSS
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 5 MODE 4 MODE 3 MODE 2 MODE 1 MODE 0
PARAMETER DESCRIPTION
Figure 43. Ultra DMA cycle timings (Device Terminating Read)
Hitachi Travelstar 60GH & 40GN hard disk drive specifications
53