參數(shù)資料
型號: MT90870
廠商: Zarlink Semiconductor Inc.
英文描述: Flexible 12 k Digital Switch (F12kDX)
中文描述: 靈活的12畝數(shù)字交換機(jī)(F12kDX)
文件頁數(shù): 83/86頁
文件大小: 2093K
代理商: MT90870
MT90870
Data Sheet
83
Zarlink Semiconductor Inc.
Note 1:
High Impedance is measured by pulling to the appropriate rail with R
L
=1k//1k potential divider, with timing corrected for C
L
.
Figure 28 - Serial Output and External Control
Figure 29 - Output Driver Enable (ODE)
Backplane and Local Output High-Impedance Timing
Characteristic
Sym.
Min.
Typ.
Max.
Units
Test Conditions
1
STo delay - Active to High-Z
- High-Z to Active
t
DZ
t
ZD
4
4
ns
ns
R
L
=1K, C
L
=50pF, See Note 1
2
Output Driver Enable (ODE)
Delay to Active Data
Output Driver Enable (ODE)
Delay to High-Impedance
t
ODE
t
ODZ
15
14
ns
ns
R
L
=1K, C
L
=50pF, See Note 1
R
L
=1K, C
L
=50pF, See Note 1
Non-Multiplexed Microprocessor Port Timing
Characteristics
Sym.
Min.
Typ.
Max.
Units
Test Conditions
1
CS setup from DS falling
t
CSS
0
0
ns
2
R/W setup from DS falling
t
RWS
t
ADS
8
ns
3
Address setup from DS falling
8
ns
4
CS hold after DS rising
t
CSH
0
ns
5
R/W hold after DS rising
t
RWH
8
ns
tDZ
STo
tZD
STo
CLK
VTT
VTT
HiZ
Valid Data
VTT
HiZ
Valid Data
VTT
Hi-Z
Hi-Z
STo
ODE
tODZ
tODE
Valid Data
VTT
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