22
COMMERCIAL TEMPERATURE RANGE
IDT72V70200 3.3V TIME SLOT INTERCHANGE
DIGITAL SWITCH 512 x 5
12
DS
CS
VALID WRITE ADDRESS
A0-A7
t
CSS
t
CSH
R/W
t
RWS
t
RWH
t
ADS
t
ADH
VALID WRITE
DATA
AD0-AD7/
D8-D15
t
DSW
t
DHW
DTA
t
AKD
t
AKH
t
CSS
t
CSH
t
RWS
t
RWH
VALID READ ADDRESS
t
ADS
t
ADH
VALID READ DATA
t
DDR
t
DHR
t
AKD
t
AKH
5711 drw16
t
SWD
Figure 13. Motorola Non-Multiplexed Asyncrounous Bus Timing
AC ELECTRICAL CHARACTERISTICS-MOTOROLA NON-MULTIPLEXED BUS MODE
Symbol Parameter Min. Typ. Max. Units Test Conditions
t
CSS CS Setup from DS falling 0 ns
t
RWS R/W Setup from DS falling 10 ns
t
ADS Address Setup from DS falling 2 ns
t
CSH CS Hold after DS rising 0 ns
t
RWH R/W Hold after DS Rising 2 ns
t
ADH Address Hold after DS Rising 2 ns
t
DDR Data Setup from DTA LOW on Read 2 ns CL = 150pF
t
DHR Data Hold on Read 10 20 ns CL = 150pF, RL = 1K
t
DSW Data Setup on Write (Fast Write) 0 ⎯ ns
t
SWD Valid Data Delay on Write (Slow Write) 122 ns
t
DHW Data Hold on Write 5 ns
t
AKD Acknowledgment Delay:
Reading/Writing Registers 43/43 ns C
L = 150pF
Reading/Writing Memory 760/750 ns C
L = 150pF
t
AKH
(1)
Acknowledgment Hold Time 22 ns CL = 150pF, RL = 1K
NOTE:
1. High Impedance is measured by pulling to the appropriate rail with R
L
, with timing corrected to cancel time taken to discharge C
L
.
