Transcend
44-Pin ID
E Flash M
odule (Horizo
ntal)
TS128M ~
4GDOM44H-
S
Ultra DMA Data Burst Timing Requirements
UDMA Mode 0 UDMA Mode 1 UDMA Mode 2 UDMA Mode 3 UDMA Mode 4 Measure location
(See Note 2)
Name
Min
240
112
230
15.0
5.0
Max
Min
160
73
Max
Min
120
54
Max
Min
90
Max
Min
60
Max
t2CYCTYP
tCYC
t2CYC
tDS
Sender
Note 3
Sender
Recipient
Recipient
Sender
Sender
Device
Device
Host
39
86
25
57
153
10.0
5.0
48.0
6.2
10.0
5.0
48.0
6.2
115
7.0
5.0
31.0
6.2
7.0
5.0
31.0
6.2
0
7.0
5.0
20.0
6.2
7.0
5.0
20.0
6.2
0
5.0
5.0
6.7
6.2
5.0
5.0
6.7
6.2
0
tDH
tDVS
tDVH
tCS
70.0
6.2
15.0
5.0
70.0
6.2
0
tCH
tCVS
tCVH
tZFS
tDZFS
tFS
tLI
tMLI
tUI
Host
Device
Sender
0
48.0
70.0
31.0
20.0
6.7
230
150
200
150
170
150
130
100
120 Device
100 Note 4
Host
0
20
0
0
20
0
0
20
0
0
20
0
0
20
0
Host
tAZ
10
10
10
10
10 Note 5
Host
tZAH
tZAD
tENV
tRFS
tRP
tIORDYZ
tZIORDY
tACK
tSS
20
0
20
20
0
20
20
0
20
20
0
20
20
0
20
Device
70
75
70
70
70
60
55
60
55 Host
60 Sender
Recipient
20 Device
Device
160
125
100
100
100
20
20
20
20
0
20
50
0
20
50
0
20
50
0
20
50
0
20
50
Host
Sender
Notes: All Timings in ns
(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.
(6) See Page 14 the AC Timing requirements in Ultra DMA AC Signal Requirements.
12
Transcend Information Inc.
Ver 1.0
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