Fujitsu MHG2102AT - Mobile 10 GB Hard Drive Product Manual page 174

Table 5.16 Ultra DMA data burst timing requirements (2 of 2)
NAME MODE 0
(in ns)
MIN MAX
t 75
RFS
t 160
RP
t 20
IORDYZ
t 0
ZIORDY
t 20
ACK
t 50
SS
Notes:
1) t , t and t indicate sender -to-recipient or recipient-to-sender interlocks, that is, one agent
UI MLI LI
(either sender or recipient) is waiting for the other agent to respond with a signal before proceeding.
t is an unlimited interlock, that has no maximum time value. t
UI
defined minimum. t is a limited time-out, that has a defined maximum.
LI
2) All timing parameters are measured at the connector of the device to which the parameter applies.
For example, the sender shall stop generating STROBE edges t
Both STROBE and DMARDY- timing measurements are taken at the connector of the sender.
3) All timing measurement switching points (low to high and high to low) are to be taken at 1.5 V.
C141-E070-01EN
MODE 1 MODE 2
(in ns) (in ns)
MIN MAX MIN MAX
60
125 100
20
0 0
20 20
50 50
COMMENT
50 Ready-to-final-STROBE time (no
STROBE edges shall be sent this long after
negation of DMARDY)
Ready-to-pause time (that recipient shall
wait to initiate pause after negating
DMARDY-)
20 Pull-up time before allowing IORDY to be
released
Minimum time device shall wait before
driving IORDY
Setup and hold times for DMACK- (before
assertion or negation)
Time from STROBE edge to negation of
DMARQ or assertion of STOP (when
sender terminates a burst)
is a limited time-out that has a
MLI
after the negation of DMARDY-.
RFS
5.6 Timing
5-101