mt89l85apr1 Zarlink Semiconductor, mt89l85apr1 Datasheet - Page 21

• Manufacturer Part Number: mt89l85apr1
• Description: 256 X 256 Channels 8 Tdm Streams At 2.048 Mbps 3.3 V Non-blocking Enhance Digital Switch Edx With Constant Delay Mode
• Manufacturer: Zarlink Semiconductor

† Timing is over recommended temperature & power supply voltages .
‡ Typical figures are at 25
* High Impedance is measured by pulling to the appropriate rail with R
AC Electrical Characteristics
Voltages are with respect to ground (VSS) unless otherwise stated .
10 Valid Data Delay on write
11 Data hold on write
12 Acknowledgment Delay:
13 Acknowledgment Hold Time
1
2
3
4
5
6
7
8
9
CS Setup from DS rising
R/W Setup from DS rising
Add setup from DS rising
CS hold after DS falling
R/W hold after DS falling
Add hold after DS falling
Data setup from DTA Low on Read
Data hold on read
Data setup on write (fast write)
(slow write)
Reading/Writing Conn. Memory
Characteristics
°
C and are for design aid only: not guaranteed and not subject to production testing.
Writing to Control Register
Reading Control Register
Reading Data Memory
†
- Microprocessor Bus
Zarlink Semiconductor Inc.
Sym.
t
t
t
t
t
t
t
t
t
t
t
t
t
RWH
DSW
SWD
DHW
RWS
ADH
DDR
DHR
AKD
AKH
ADS
CSH
CSS
MT89L85
L
, with timing corrected to cancel time taken to discharge C
21
Min.
10
0
5
5
0
5
8
0
0
5
Typ.
62/30
560
25
10
52
50
25
‡
120/53
Max.
1220
122
120
90
65
80
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
R
C
R
C
C
C
L
L
L
L
L
L
=1 KΩ*,
=150 pF
=1 KΩ*,
=150 pF
L
Test Conditions
=150 pF
=150 pF
.
Data Sheet