MT90826AL1 Zarlink Semiconductor, Inc., MT90826AL1 Datasheet - Page 41

• Manufacturer Part Number: MT90826AL1
• Description: Quad Digital Switch
• Manufacturer: Zarlink Semiconductor, Inc.

AC Electrical Characteristics - Motorola Non-Multiplexed Bus Mode
1. High Impedance is measured by pulling to the appropriate rail with R
2. Register write timing refers to the rising edge of DS at the end of the write cycle.
3. Memory write timing refers to the falling edge of DS at the beginning of the write cycle.
12a Acknowledgment Delay: Register RD or WR
12b Acknowledgment Delay: Memory RD or WR
10 Valid Data Delay on write (memory write
11 Data hold on write
13 Acknowledgment Hold Time
Note:
1
2
3
4
5
6
7
8
9
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
Data setup on write (register write
modes
modes
For 16 Mbps, 16&8 Mbps, 8 Mbps, 4&8 Mbps
For 4 Mbps, 4&2 Mbps modes
For 2 Mbps mode
For 16 Mbps, 16&8 Mbps, 8 Mbps, 4&8 Mbps
For 4 Mbps, 4&2 Mbps modes
For 2 Mbps mode
Characteristics
2
)
3
Zarlink Semiconductor Inc.
)
MT90826
41
L
, with timing corrected to cancel time taken to discharge C
Sym.
t
t
t
t
t
t
t
t
t
t
t
t
t
t
RWH
DHW
RWS
DSW
SWD
CSS
ADS
CSH
ADH
DDR
DHR
AKD
AKD
AKH
Min. Typ. Max. Units
10
10
27
12
13
0
2
0
2
0
185
100
140
240
20
50
85
55
24
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
C
C
Note 1
C
C
C
Note 1
Test Conditions
L
L
L
L
L
=150pF
=150pF, R
=150pF
=150pF
=150pF, R
Data Sheet
L
.
L
L
=1K,
=1K