MT90812 Mitel Networks Corporation, MT90812 Datasheet - Page 101

• Manufacturer Part Number: MT90812
• Description: Integrated Digital Switch (IDX)
• Manufacturer: Mitel Networks Corporation

Advance Information
AC Electrical Characteristics - Motorola Multiplexed Bus Mode
† See "Notes" following AC Electrical Characteristics tables.
10
11
12
13
14
1
2
3
4
5
6
7
8
9
DS/RD
R/W
AS/ALE
AD0-AD7
Write
AD0-AD7
Read
CS
DTA
AS pulse width
Address setup from AS falling
Address hold from AS falling
Data setup from DTA Low on Read
CS hold after DS falling
CS setup from DS rising
Data hold after write
Valid Data Delay on write
R/W setup from DS rising
R/W hold after DS falling
Data hold after read
DS delay after AS falling
Acknowledgment Delay:
Register
Data Memory or Connect Memory
Data Memory A6=1
DBR, DBT and FSK FIFO Read
DBR, DBT and FSK FIFO Write
Acknowledgment Hold Time
Characteristics
Figure 49 - Motorola Multiplexed Bus Timing
t
ASW
ADDRESS
ADDRESS
t
ADS
t
ADH
Sym
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
RWS
CSS
t
DHW
RWH
AKD
ASW
DDR
SWD
RWS
DHR
ADS
ADH
CSH
CSS
DSH
AKH
t
DSH
Min
20
10
10
10
5
0
0
0
0
0
0
5
t
SWD
200 + 1/2 C8P
1.5xC8p + 85
2xC8p + 95
t
AKD
Max
135
30
95
15
t
DDR
DATA
DATA
Units
t
CSH
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
t
DHW
t
t
DHR
AKH
5
3, 4
5
5
5,7
5
5
3, 4
t
RWH
Test Conditions†
MT90812
2.0V
0.8V
2.0V
0.8V
2.0V
0.8V
2.0V
2.0V
0.8V
0.8V
2.0V
2.0V
0.8V
0.8V
2.0V
0.8V
2.0V
0.8V
97