Quantum FIREBALL PLUS AS 10.2 Product Manual page 74

ATA Bus Interface and ATA Commands
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
Mode 0 Mode 0 Mode 0 Mode 0
Name Name Name Name
(ns) (ns)
(ns) (ns)
Min Max Min Max Min Min Max
Min Min Max Max Min Min
t 240 160
2CYCTYP
t 112 73
CYC
t 230 153
2CYC
t 15.0 10.0
DS
t 5.0 5.0
DH
t 70.0 48.0
DVS
t 6.2 6.2
DVH
t 15.0 10.0
CS
t 5.0 5.0
CH
t 70.0 48.0
CVS
t 6.2 6.2
CVH
t 0 0
ZFS
t 70.0 48.0
DZFS
t 230
FS
t 0 150 0
LI
t 20 20
MLI
t 0 0
UI
t 10
AZ
t 20 20
ZAH
t 0 0
ZAD
t 20 70 20
ENV
t 75
RFS
t 160 125
RP
t 20
IORDYZ
t 0 0
ZIORDY
t 20 20
ACK
t 50 50
SS
6-12 Quantum Fireball Plus AS 10.2/20.5/30.0/40.0/60.0 GB AT
Ultra DMA Data Transfer Timing Requirements
Mode 1 Mode 1 Mode 1 Mode 1 Mode 2 Mode 2 Mode 2 Mode 2
(ns) (ns) (ins) (ins)
(ns) (ns) (ins) (ins)
Max Min Min Max Max Min
Max Max Min Min Max Max
120
54
115
7.0
5.0
31.0
6.2
7.0
5.0
31.0
6.2
0
31.0
200 170
150 0 150 0
20
0
10 10
20
0
70 20 70
70 60
100
20 20
0
20
50
Mode 3 Mode 3 Mode 3 Mode 3 Mode 4 Mode 4 Mode 4 Mode 4
(ns) (ns) (ns) (ns)
(ns) (ns) (ns) (ns)
Min Max Max Min Min Max Max Min
Min Min Max Max Min Min Max Max
90 60
39 25
86 57
7.0 5.0
5.0 5.0
20.0 6.7
6.2 6.2
7.0 5.0
5.0 5.0
20.0 6.7
6.2 6.2
0 0
20.0 6.7
130 120
100 0 100 0
20 20
0 0
10 10
20 20
0 0
20 55 20 55
60 60
100 100
20 20
0 0
20 20
50 50
Mode 5 Mode 5 Mode 5 Mode 5 Measurement Measurement Measurement Measurement
(ns) (ns) Location Location
(ns) (ns) Location Location
Min Max Max
Min Min Max Max
40 Sender
16.8 Recipient
38 Sender
4.0 Recipient
4.6 Recipient
4.8 Sender
4.8 Sender
5.0 Device
5.0 Device
10.0 Host
10.0 Host
35 Device
25 Sender
90 Device
75 Note 2
20 Host
0 Host
10 Note 3
20 Host
0 Device
20 50 Host
50 Sender
85 Recipient
20 Device
0 Device
20 Host
50 Sender