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COM20019IP データシート(PDF) 70 Page - SMSC Corporation

部品番号 COM20019IP
部品情報  Low Cost ARCNET (ANSI 878.1) Controller with 2K x 8 On-Board RAM
PDF  81 Pages
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メーカー  SMSC [SMSC Corporation]
ホームページ  http://www.smsc.com
Logo SMSC - SMSC Corporation

COM20019IP データシート(HTML) 70 Page - SMSC Corporation

Back Button COM20019IP Datasheet HTML 66Page - SMSC Corporation COM20019IP Datasheet HTML 67Page - SMSC Corporation COM20019IP Datasheet HTML 68Page - SMSC Corporation COM20019IP Datasheet HTML 69Page - SMSC Corporation COM20019IP Datasheet HTML 70Page - SMSC Corporation COM20019IP Datasheet HTML 71Page - SMSC Corporation COM20019IP Datasheet HTML 72Page - SMSC Corporation COM20019IP Datasheet HTML 73Page - SMSC Corporation COM20019IP Datasheet HTML 74Page - SMSC Corporation Next Button
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FIGURE 18 – BACKPLANE MODE TRANSMIT OR RECEIVE TIMING
(These signals are to and from the differential driver or the cable)
70
DISCONTINUED DATASHEET
t1
t3
Parameter
Input Clock High Time
Input Clock Period
min
20
50
max
units
nS
nS
XTAL1
t1
t4
Input Clock Frequency*
100
t2
Input Clock Low Time
nS
t3
20
typ
10
t2
20
MHz
t5
Frequency Accuracy*
-200
200
ppm
Note*: t4 and t5 are applied to crystal oscillaton.
4.0V
1.0V
50% of VDD
FIGURE 19 – TTL INPUT TIMING ON XTAL1 PIN
FIGURE 20 – RESET AND INTERRUPT TIMING
t1
Parameter
nRESET Pulse Width***
min
max
units
t1
nRESET
t2
nINTR High to Next nINTR Low
typ
t2
nINTR
5TXTL*
EF = 0
EF = 1
TDR**/2
4TXTL*
Note*: TXTL is period of external XTAL oscillation frequency.
Note**: TDR is period of Data Rate (i.e. at 312.5 Kbps, TDR = 3200 nS)
Note***: When the power is turned on, t1 is measured from stable XTAL
oscillation after VDD was over 4.5V.



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