SC2200 NSC [National Semiconductor], SC2200 Datasheet - Page 395

• Manufacturer Part Number: SC2200
• Description: Thin Client On a Chip
• Manufacturer: NSC [National Semiconductor]

Revision 3.0
Electrical Specifications
1.
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
0
D
E
F
G
H
I
J
KR
KW
LR
LW
M
N
Z
t
recovery time or command inactive time. The actual cycle time equals the sum of the command active time and the
command inactive time. The three timing requirements of t
quirement t
t
0
KR/KW
is the minimum total cycle time, t
to ensure that t
Parameter
Cycle time
IDE_IOR[0:1]#/IDE_IOW[0:1]# (min)
IDE_IOR[0:1]# data access (max)
IDE_IOR[0:1]# data hold (min)
IDE_IOW[0:1]#/IDE_IOW[0:1]# data setup (min)
IDE_IOW[0:1]# data hold (min)
IDE_DACK[0:1]# to IDE_IOR[0:1]#/IDE_IOW[0:1]# setup (min)
IDE_IOR[0:1]#/IDE_IOW[0:1]# to IDE_DACK[0:1]# hold (min)
IDE_IOR[0:1]# negated pulse width (min)
IDE_IOW[0:1]# negated pulse width (min)
IDE_IOR[0:1]# to IDE_DREQ[0:1] delay (max)
IDE_IOW[0:1]# to IDE_DREQ0,1 delay (max)
IDE_CS[0:1]# valid to IDE_IOR[0:1]#/IDE_IOW[0:1]# (min)
IDE_CS[0:1]# hold
IDE_DACK[0:1]# to TRI-STATE
0
is greater than the sum of t
1
Table 8-26. Multiword DMA Data Transfer Timing Parameters
(min)
0
is equal to or greater than the value reported in the device’s IDENTIFY DEVICE data.)
(Continued)
D
is the minimum command active time, and t
D
and t
KR/KW
. (This means that a host implementation can lengthen t
395
0
, t
D
and t
KR/KW
, are met. The minimum total cycle time re-
Mode 0
KR
(ns)
480
215
150
100
215
120
20
20
50
40
50
15
20
5
0
or t
KW
is the minimum command
Mode 1
(ns)
150
80
60
30
15
50
50
40
40
30
25
10
5
0
5
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Mode 2
D
(ns)
120
70
50
20
10
25
25
35
35
25
10
25
and/or
5
0
5