IDT72V70190 Integrated Device Technology, IDT72V70190 Datasheet - Page 17

• Manufacturer Part Number: IDT72V70190
• Description: 3.3 Volt Time Slot Interchange Digital Switch 256 X 256
• Manufacturer: Integrated Device Technology

AC ELECTRICAL CHARACTERISTICS - MULTIPLEXED BUS TIMING (MOTOROLA)
NOTE:
1. High Impedance is measured by pulling to the appropriate rail with R
IDT72V70190 3.3V TIME SLOT INTERCHANGE
DIGITAL SWITCH 256 x 256
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
AD0-AD7
AD0-AD7
ADH
DDR
CSH
DHW
DWS
SWD
RWS
RWH
DSH
ASW
ADS
CSS
DHR
AKD
AKH
D8-D15
D8-D15
(1)
(1)
DTA
R/W
WR
DS
CS
AS
RD
Parameter
ALE 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)
R/W Setup from DS Rising
R/W Hold from DS Rising
Data Hold after Read
DS Delay after AS falling
Acknowledgment Delay:
Reading/Writing Registers
Reading/Writing Memory
Acknowledgment Hold Time
Figure 12. Multiplexed Bus Timing (Motorola Mode)
t
ADS
t
ASW
ADDRESS
ADDRESS
L
, with timing corrected to cancel time taken to discharge C
t
CSS
Min.
20
20
60
10
10
3
3
5
0
0
5
5
t
RWS
17
t
DSH
t
ADH
Typ.
760/750
43/43
122
Max.
20
22
t
SWD
t
AKD
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
COMMERCIAL TEMPERATURE RANGE
t
DWS
L
.
DATA
t
DDR
DATA
C
C
L
L
= 150pF, R
= 150pF, R
Test Conditions
C
C
C
L
L
L
= 150pF
= 150pF
= 150pF
t
t
DHR
AKH
t
CSH
L
L
t
DHW
t
= 1K
= 1K
RWH
5717 drw12