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參數(shù)資料
| 型號： | IMSC011-W20S |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Link adaptor |
| 中文描述： | 鏈路適配器 |
| 文件頁數(shù)： | 6/30頁 |
| 文件大小： | 239K |
| 代理商： | IMSC011-W20S |
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IMS C011
/ 30
6
Symbol
TDCLDCH
TDCHDCL
TDCLDCL
TDCerror
TDC1DC2
TDCr
TDCf
Parameter
ClockIn
pulse width low
ClockIn
pulse width high
ClockIn
period
ClockIn
timing error
Difference in
ClockIn
for 2 linked devices
ClockIn
rise time
ClockIn
fall time
Min
40
40
Nom
Max
Units
ns
ns
ns
ns
ppm
ns
ns
Notes
1
1
1,2,4
1,3
1,4
1,5
1,5
200
0.5
400
10
8
Notes
1 Guaranteed, but not tested.
2 Measured between corresponding points on consecutive falling edges.
3 Variation of individual falling edges from their nominal times.
4 This value allows the use of 200ppm crystal oscillators for two devices connected together by
a link.
5 Clock transitions must be monotonic within the range
VIH
to
VIL
(table 7.3).
Table3.1
Input clock
90%
10%
TDCr
2.0V
1.5V
0.8V
TDCerror
TDCerror
TDCerror
TDCerror
TDCLDCH
TDCHDCL
TDCLDCL
TDCf
90%
10%
Figure 3.2
ClockIn timing
3.4
SeparateIQ
The IMS C011 link adaptor has two different modes of operation. Mode 1 is basically a link to peripheral
adaptor,whilst Mode 2 interfaces between a link and a microprocessor bus system.
Mode 1 can be selected for one of two link speeds by connecting
SeparateIQ
to
VDD
(10 Mbits/sec) or
to
ClockIn
(20 Mbits/sec).
Mode 2 is selected by connecting
SeparateIQ
to
GND
; in this mode 10 Mbits/sec or 20 Mbits/sec is se-
lected by
LinkSpeed
. Link speeds are specified for a
ClockIn
frequency of 5 MHz.
In order toselect thelink speed,
SeparateIQ
may bechangeddynamically providing thelink is ina quies-
centstateandnoinputor outputisrequired.
Reset
must beappliedsubsequenttotheselectionto initialise
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