MT90823AG Zarlink Semiconductor, Inc., MT90823AG Datasheet - Page 30

• Manufacturer Part Number: MT90823AG
• Description: Switch Fabric, 131.072Mbps Switching Bandwidth, 3.3V Supply Voltage, 120-PBGA
• Manufacturer: Zarlink Semiconductor, Inc.

MT90823
AC Electrical Characteristics - Multiplexed Bus Timing (Mode 2)
30
10 R/W setup from DS rising
11 R/W hold after DS falling
12 Data hold after read
13 DS delay after AS falling
14 Acknowledgment Delay:
15 Acknowledgment Hold Time
Note 1. High Impedance is measured by pulling to the appropriate rail with R
1
2
3
4
5
6
7
8
9
AD0-AD7
AD0-AD7
D8-D15
D8-D15
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
Data setup from DS -Write (fast
write)
Valid Data Delay on write (slow write)
Reading/Writing Registers
Reading/Writing Memory @ 2Mb/s
R/W
DTA
WR
RD
DS
AS
CS
Characteristics
CMOS
HiZ
HiZ
Figure 17 - Multiplexed Bus Timing (Mode2)
@ 4Mb/s
@ 8Mb/s
t
ASW
t
ADS
ADDRESS
ADDRESS
Sym
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
DHW
SWD
RWH
ASW
DDR
DWS
RWS
DHR
ADS
ADH
CSH
CSS
DSH
AKD
AKH
t
ADH
t
CSS
t
RWS
t
DSH
Min
20
20
60
10
10
3
3
5
0
0
5
5
HiZ
t
SW
L
HiZ
, with timing corrected to cancel time taken to discharge C
Typ
t
AKD
760/750
400/390
220/210
43/43
Max
122
20
22
t
DWS
t
DDR
DATA
DATA
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
t
t
DHW
t
AKH
DHR
C
C
Note 1
C
C
C
C
C
Note 1
t
CSH
L
L
L
L
L
L
L
Test Conditions
=150pF
=150pF, R
=150pF
=150pF
=150pF
=150pF
=150pF, R
t
RWH
V
V
V
CT
CT
V
CT
V
V
V
L
L
CT
CT
=1K,
CT
CT
=1K,
L
.