ATA Bus Interface and ATA Commands
6-12 Quantum Fireball Plus AS 10.2/20.5/30.0/40.0/60.0 GB AT
Table 6-7 contains the values for the timings for each of the Ultra DMA modes. All
timing measurement switching points (low to high and high to low) shall be taken
at 1.5V. Table 6-8 contains descriptions and comments for each of the timing values
in Table 6-7.
Table 6-7
Table 6-7 Table 6-7
Table 6-7
Ultra DMA Data Transfer Timing Requirements
Name
NameName
Name
Mode 0
Mode 0Mode 0
Mode 0
(ns)
(ns)(ns)
(ns)
Mode 1
Mode 1Mode 1
Mode 1
(ns)
(ns)(ns)
(ns)
Mode 2
Mode 2Mode 2
Mode 2
(ins)
(ins)(ins)
(ins)
Mode 3
Mode 3Mode 3
Mode 3
(ns)
(ns)(ns)
(ns)
Mode 4
Mode 4Mode 4
Mode 4
(ns)
(ns)(ns)
(ns)
Mode 5
Mode 5Mode 5
Mode 5
(ns)
(ns)(ns)
(ns)
Measurement
Measurement Measurement
Measurement
Location
LocationLocation
Location
Min
MinMin
Min Max
MaxMax
Max Min
MinMin
Min Max
MaxMax
Max Min
MinMin
Min Max
MaxMax
Max Min
MinMin
Min Max
MaxMax
Max Min
MinMin
Min Max
MaxMax
Max Min
MinMin
Min Max
MaxMax
Max
t
2CYCTYP
240160120906040Sender
t
CYC
1127354392516.8Recipient
t
2CYC
230153115865738Sender
t
DS
15.0 10.0 7.0 7.0 5.0 4.0 Recipient
t
DH
5.0 5.0 5.0 5.0 5.0 4.6 Recipient
t
DVS
70.0 48.0 31.0 20.0 6.7 4.8 Sender
t
DVH
6.2 6.2 6.2 6.2 6.2 4.8 Sender
t
CS
15.0 10.0 7.0 7.0 5.0 5.0 Device
t
CH
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 Host
t
CVH
6.2 6.2 6.2 6.2 6.2 10.0 Host
t
ZFS
0000035Device
t
DZFS
70.0 48.0 31.0 20.0 6.7 25 Sender
t
FS
230 200 170 130 120 90 Device
t
LI
01500150015001000100075Note 2
t
MLI
20 20 20 20 20 20 Host
t
UI
000000Host
t
AZ
10 10 10 10 10 10 Note 3
t
ZAH
20 20 20 20 20 20 Host
t
ZAD
000000Device
t
ENV
20 70 20 70 20 70 20 55 20 55 20 50 Host
t
RFS
75 70 60 60 60 50 Sender
t
RP
160 125 100 100 100 85 Recipient
t
IORDYZ
20 20 20 20 20 20 Device
t
ZIORDY
000000Device
t
ACK
20 20 20 20 20 20 Host
t
SS
50 50 50 50 50 50 Sender
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