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ATA/ATAPI specifications
Transfer mode MODE 0 MODE 1 MODE 2 MODE 3 MODE 4 MODE 5
Symbo
l
Meaning Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max.
t
CYC
Cycle time
112 73 54 39 25 16.8
t
2CYC
Two cycle time
230 153 115 86 57 38
t
DS
Data setup time
15.0 10.0 7.0 7.0 5.0 4.0
t
DH
Data hold time
5.0 5.0 5.0 5.0 5.0 4.6
t
DVS
Data valid setup time
70.0 48.0 31.0 20.0 6.7 4.8
t
DVH
Data valid hold time
6.2 6.2 6.2 6.2 6.2 4.8
t
CS
CRC setup time
15.0 10.0 7.0 7.0 5.0 5.0
t
CH
CRC hold time
5.0 5.0 5.0 5.0 5.0 5.0
t
CVS
CRC valid setup time
70.0 48.0 31.0 20.0 6.7 10.0
t
CVH
CRC valid hold time
6.2 6.2 6.2 6.2 6.2 10.0
t
ZFS
Strobe released to driving
0 0 0 0 0 35
t
DZFS
Data released to driving
70.0 48.0 31.0 20.0 6.7 25
t
FS
First STROBE time
0 230 0 200 0 170 0 130 0 120 0 90
t
LI
Limit interlock time
0 150 0 150 0 150 0 100 0 100 0 75
t
MLI
Interlock time min.
20 20 20 20 20 20
t
UI
Unlimited interlock
0 0 0 0 0 0
t
AZ
Allowed to release
10 10 10 10 10 10
t
ZAH
Delay time
20 20 20 20 20 20
t
ZAD
Delay time
0 0 0 0 0 0
t
ENV
Envelope time
20 70 20 70 20 70 20 55 20 55 20 50
t
RFS
Ready to final Strobe
75 70 60 60 60 50
t
RP
Ready to pause
160 125 100 100 100 85
t
IORDYZ
Pullup before IORDY
20 20 20 20 20 20
t
ZIORDY
Wait before IORDY
0 0 0 0 0 0
t
ACK
Setup hold for DACK
20 20 20 20 20 20
t
SS
Strobe to DREQ/Stop
50 50 50 50 50 50