Ultra Dma Data Burst Timing Requirements - Fujitsu MPD3XXXAT Product Manual

5.6.3.2 Ultra DMA data burst timing requirements

Table 5.16 Ultra DMA data burst timing requirements (1 of 2)
NAME MODE 0
(in ns)
MIN MAX MIN
t 240 160
2CYCTYP
t 112 73
CYC
t 230 154
2CYC
t 15 10
DS
t 5 5
DH
t 70 48
DVS
t 6 6
DVH
t 0 230 0
FS
t 0 150 0
LI
t 20 20
MLI
t 0 0
UI
t 10
AZ
t 20 20
ZAH
t 0 0
ZAD
t 20 70 20
ENV
t 50
SR
t 75
RFS
t 160 125
RP
t 20
IORDYZ
5 - 88
MODE 1 MODE 2
(in ns) (in ns)
MAX MIN MAX
120
54
115
7
5
30
6
200 0 170
150 0 150
20
0
10 10
20
0
70 20 70
30 20
70 60
100
20 20
C141-E069-02EN
MODE 3 MODE 4
(in ns) (in ns)
MIN MAX MIN MAX (see Notes 1 and 2)
90 60
39 25
86 57
7 5
5 5
20 6
6 6
0 130 0 120
0 100 0 100
20 20
0 0
10 10
20 20
0 0
20 55 20 55
NA NA
60 60
100 100
20 20
COMMENT
Typical sustained average two cycle
time
Cycle time allowing for asymmetry
and clock variations (from STROBE
edge to STROBE edge)
Two cycle time allowing for clock
variations (from rising edge to next
rising edge or from falling edge to
next falling edge of STROBE)
Data setup time (at recipient)
(see Note 4)
Data hold time (at recipient)
(see Note 4)
Data valid setup time at sender (from
data valid until STROBE edge)
(see Note 5)
Data valid hold time at sender (from
STROBE edge until data may
become invalid) (see Note 5)
First STROBE time (for device to
first negate DSTROBE from STOP
during a data in burst)
Limited interlock time (see Note 3)
Interlock time with minimum
(see Note 3)
Unlimited interlock time (see Note 3)
Maximum time allowed for output
drivers to release (from asserted or
negated)
Minimum delay time required for
output
Drivers to assert or negate (from
released)
Envelope time (from DMACK- to
STOP and HDMARDY- during data
in burst initiation and from DMACK
to STOP during data out burst
initiation)
STROBE-to-DMARDY-time (if
DMARDY- is negated before this long
after STROBE edge, the recipient shall
receive no more than one additional
data word)
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 pause after negating
DMARDY-)
Maximum time before releasing
IORDY