Specification

Ultra DMA data transfer
Ultra DMA data burst timing requirements
Name
Mode 0
(in ns)
Mode 1
(in ns)
Mode 2
(in ns)
Mode 3
(in ns)
Mode 4
(in ns)
Mode 5
(in ns)
Mode 6
(in ns)
Measurement
location
Min
Max
Min
M
ax
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
t
2CYCTYP
240 160 120 90 60 40 30 Sender
t
CYC
112 73 54 39 25 16.8 13.0 Note 3
t
2CYC
230 153 115 86 57 38 29 Sender
t
DS
15.0 10.0 7.0 7.0 5.0 4.0 2.6 Recipient
t
DH
5.0 5.0 5.0 5.0 5.0 4.6 3.5 Recipient
t
DVS
70.0 48.0 31.0 20.0 6.7 4.8 4.0 Sender
t
DVH
6.2 6.2 6.2 6.2 6.2 4.8 4.0 Sender
t
CS
15.0 10.0 7.0 7.0 5.0 5.0 5.0 Device
t
CH
5.0 5.0 5.0 5.0 5.0 5.0 5.0 Device
t
CVS
70.0 48.0 31.0 20.0 6.7 10.0 10.0 Host
t
CVH
6.2 6.2 6.2 6.2 6.2 10.0 10.0 Host
t
ZFS
0 0 0 0 0 35 25 Device
t
DZFS
70.0 48.0 31.0 20.0 6.7 25 17.5 Sender
t
FS
230 200 170 130 120 90 80 Device
t
LI
0 150 0 150 0 150 0 100 0 100 0 75 0 60 Note 4
t
MLI
20 20 20 20 20 20 20 Host
t
UI
0 0 0 0 0 0 0 Host
t
AZ
10 10 10 10 10 10 10 Note 5
t
ZAH
20 20 20 20 20 20 20 Host
t
ZAD
0 0 0 0 0 0 0 Device
t
ENV
20 70 20 70 20 70 20 55 20 55 20 50 20 50 Host
t
RFS
75 70 60 60 60 50 50 Sender
t
RP
160 125 100 100 100 85 85 Recipient
t
IORDYZ
20 20 20 20 20 20 20 Device
t
ZIORDY
0 0 0 0 0 0 0 Device
t
ACK
20 20 20 20 20 20 20 Host
t
SS
50 50 50 50 50 50 50 Sender
Ultra DMA data burst timing descriptions