MT90820AL Zarlink, MT90820AL Datasheet - Page 33

• Manufacturer Part Number: MT90820AL
• Description: Switch Fabric 2K x 2K/1K x 1K/512 x 512 131.072Mbps 5V 100-Pin MQFP Tray
• Manufacturer: Zarlink

Specifications of MT90820AL

• Package: 100MQFP
• Number Of Ports: 16
• Fabric Size: 2K x 2K|1K x 1K|512 x 512
• Switching Bandwidth: 131.072 Mbps
• Switch Core: Non-Blocking
• Port Speed: 2.048|4.096|8.192 Mbps
• Operating Supply Voltage: 5 V

AC Electrical Characteristics - Motorola Non-Multiplexed Bus Mode
Note 1:
10 Valid Data Delay on write (slow write)
11 Data hold on write
12 Acknowledgment Delay:
13 Acknowledgment Hold Time
1
2
3
4
5
6
7
8
9
AD0-AD7
AD0-AD7
D8-D15
D8-D15
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 (fast write)
R/W
DTA
Reading/Writing Registers
Reading/Writing Memory, @ 2Mb/s
High Impedance is measured by pulling to the appropriate rail with R
WR
C
DS
AS
RD
CS
L
.
Characteristics
HiZ
HiZ
@ 8Mb/s
@ 4Mb/s
Figure 16 - Multiplexed Bus Timing (Mode2)
t
ASW
t
ADS
ADDRESS
ADDRESS
Zarlink Semiconductor Inc.
t
Sym.
t
t
t
t
t
t
t
t
t
t
t
t
DHW
RWH
ADH
DSW
SWD
AKD
AKH
RWS
ADS
DDR
DHR
CSH
CSS
t
ADH
t
MT90820
CSS
t
RWS
t
DSH
33
Min.
10
10
20
0
2
0
5
5
0
8
HiZ
t
SW
HiZ
Typ.
L
50
45
, with timing corrected to cancel time taken to discharge
t
AKD
760/780
400/420
220/240
Max.
55/60
122
75
80
t
DWS
t
DDR
DATA
DATA
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
t
t
DHW
AKH
t
DHR
C
C
Note 1
C
C
C
C
C
Note 1
t
CSH
L
L
L
L
L
L
L
=150pF
=150pF, R
=150pF
=150pF
=150pF
=150pF
=150pF, R
Test Conditions
t
RWH
Data Sheet
V
V
V
TT
TT
V
TT
V
L
L
V
V
TT
=1K
=1K,
TT
TT
TT