Datasheet
SLCFxxxM2TU(I)(-x) CompactFlash Card
Datasheet
61000-07000-106, May 2011 30
4.3.9 Ultra DMA AC Characteristics
Note: Part numbers with -P extension do not support TrueIDE UDMA.
Table 22: UDMA Burst Timing Requirements
Symbol
UDMA0 (ns)
UDMA1 (ns)
UDMA2 (ns)
UDMA3 (ns)
UDMA4 (ns)
Measure
location (see
Note2)
t2CYCTYP (min)
240
160
120
90
60
Sender
tCYC (min)
112
73
54
39
25
Note3
t2CYC (min)
230
153
115
86
57
Sender
tDS (min)
15.0
10.0
7.0
7.0
5.0
Recip’nt
tDH (min)
5.0
5.0
5.0
5.0
5.0
Recip’nt
tDVS (min)
70.0
48.0
31.0
20.0
6.7
Sender
tDVH (min)
6.2
6.2
6.2
6.2
6.2
Sender
tCS (min)
15.0
10.0
7.0
7.0
5.0
Device
tCH (min)
5.0
5.0
5.0
5.0
5.0
Device
tCVS (min)
70.0
48.0
31.0
20.0
6.7
Host
tCVH (min)
6.2
6.2
6.2
6.2
6.2
Host
tZFS (min)
0
0
0
0
0
Device
tDZFS (min)
70.0
48.0
31.0
20.0
6.7
Sender
tFS (max)
230
200
170
130
120
Device
tLI (min)
0
0
0
0
0
Note4
tLI (max)
150
150
150
100
100
Note4
tMLI (min)
20
20
20
20
20
Host
tUI (min)
0
0
0
0
0
Host
tAZ (max)
10
10
10
10
10
Note5
tZAH (min)
20
20
20
20
20
Host
tZAD (min)
0
0
0
0
0
Device
tENV (min)
20
20
20
20
20
Host
tENV (max)
70
70
70
55
55
Host
tRFS (max)
75
70
60
60
60
Sender
tRP (min)
160
125
100
100
100
Recip’nt
tIORDYZ (max)
20
20
20
20
20
Device
tZIORDY (min)
0
0
0
0
0
Device
tACK (min)
20
20
20
20
20
Host
tSS (min)
50
50
50
50
50
Sender
Notes:
1. All timing measurement switching points (low to high and high to low) shall be taken at 1.5 V.
2. All signal transitions for a timing parameter shall be measured at the connector specified in the measurement
location column. For example, in the case of tRFS, both STROBE and -DMARDY transitions are measured at
the sender connector.
3. The parameter tCYC shall be measured at the recipient’s connector farthest from the sender.
4. The parameter tLI shall be measured at the connector of the sender or recipient that is responding to an
incoming transition from the recipient or sender respectively. Both the incoming signal and the outgoing
response shall be measured at the same connector.
5. The parameter tAZ shall be measured at the connector of the sender or recipient that is driving the bus but must
release the bus to allow for a bus turnaround.