IDT72V90823 Integrated Device Technology, IDT72V90823 Datasheet - Page 23

• Manufacturer Part Number: IDT72V90823
• Description: 3.3 Volt Time Slot Interchange Digital Switch
• Manufacturer: Integrated Device Technology

AC ELECTRICAL CHARACTERISTICS - MULTIPLEXED BUS TIMING (INTEL)
NOTE:
1. High Impedance is measured by pulling to the appropriate rail with R
IDT72V90823 3.3V TIME SLOT INTERCHANGE
DIGITAL SWITCH 2,048 x 2,048
AD0-AD7
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
DDR
D8-D15
ALW
ADS
ADH
ALRD
CSRW
RW
CSR
DHR
WW
ALWR
CSW
DSW
SWD
DHW
AKD
AKH
DTA
(1)
ALE
(1)
CS
WR
RD
Parameter
ALE Pulse Width
Address Setup from ALE falling
Address Hold from ALE falling
RD Active after ALE falling
Data Setup from DTA LOW on Read
CS Hold after RD/WR
RD Pulse Width (Fast Read)
CS Setup from RD
Data Hold after RD
WR Pulse Width (Fast Write)
WR Delay after ALE falling
CS Setup from WR
Data Setup from WR (Fast Write)
Valid Data Delay on Write (Slow Write)
Data Hold after WR Inactive
Acknowledgment Delay:
Reading/Writing Registers
Reading/Writing Memory 
Acknowledgment Hold Time
t
ADS
t
ALW
ADDRESS
t
t
t
ADH
CSW
CSR
t
t
@ 2.048 Mb/s
@ 4.096 Mb/s
@ 8.192 Mb/s
ALRD
ALWR
Figure 12. Multiplexed Bus Timing (Intel Mode)
L
, with timing corrected to cancel time taken to discharge C
Min.
20
45
10
45
20
3
3
3
5
5
0
3
0
5
t
SWD
23
t
AKD
t
RW
t
WW
Typ.
760/750
400/390
220/210
t
DSW
43/43
122
Max.
20
22
t
DDR
DATA
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
COMMERCIAL TEMPERATURE RANGE
t
t
AKH
CSRW
t
t
DHR
DHW
L
.
C
C
L
L
= 150pF, R
= 150pF, R
Test Conditions
C
C
C
C
C
L
L
L
L
L
= 150pF
= 150pF
= 150pF
= 150pF
= 150pF
L
L
= 1K
= 1K
5712 drw15