參數(shù)資料
型號(hào): MT90826
廠商: Mitel Networks Corporation
英文描述: Quad Digital Switch(四數(shù)字開關(guān))
中文描述: 四數(shù)字交換機(jī)(四數(shù)字開關(guān))
文件頁數(shù): 26/30頁
文件大?。?/td> 131K
代理商: MT90826
MT90826
26
Note:
1. High Impedance is measured by pulling to the appropriate rail with R
L
, with timing corrected to cancel time taken to discharge C
L
.
Figure 15 - Motorola Non-Multiplexed Bus Timing
AC Electrical Characteristics - Motorola Non-Multiplexed Bus Mode
Characteristics
Sym
Min
Typ Max
Units
Test Conditions
1
2
3
4
5
6
7
8
CS setup from DS falling
R/W setup from DS falling
Address setup from DS falling
CS hold after DS rising
R/W hold after DS rising
Address hold after DS rising
Data setup from DTA Low on Read
Data hold on read
t
CSS
t
RWS
t
ADS
t
CSH
t
RWH
t
ADH
t
DDR
t
DHR
0
ns
ns
ns
ns
ns
ns
ns
ns
10
2
0
2
10
27
12
C
L
=150pF
C
L
=150pF, R
L
=1K
Note 1
20
9
Data setup on write (fast write)
Valid Data Delay on write (slow write)
For 16Mb/s, 16&8Mb/s, 8Mb/s, 4&8Mb/s modes
For 4Mb/s, 4&2Mb/s modes
For 2Mb/s mode
Data hold on write
12a Acknowledgment Delay: Register RD or WR
12b Acknowledgment Delay: Memory RD or WR
For 16Mb/s, 16&8Mb/s, 8Mb/s, 4&8Mb/s modes
For 4Mb/s, 4&2Mb/s modes
For 2Mb/s mode
13
Acknowledgment Hold Time
t
DSW
0
ns
10
t
SWD
50
85
185
13
ns
ns
ns
ns
ns
11
t
DHW
t
AKD
55
C
L
=150pF
t
AKD
100
140
240
24
ns
ns
ns
ns
C
L
=150pF
t
AKH
C
L
=150pF, R
L
=1K,
Note 1
DS
A0-A7
CS
D0-D15
READ
D0-D15
WRITE
t
CSS
t
CSH
t
ADH
t
DHR
t
RWS
R/W
t
ADS
t
RWH
t
DHW
t
AKD
t
SWD
t
DDR
t
AKH
DTA
V
TT
V
TT
V
TT
V
TT
V
TT
V
TT
V
TT
t
DSW
Valid Address
Valid Read Data
Valid Write Data
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