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COM20020D Datasheet(PDF) 62 Page - SMSC Corporation

Part # COM20020D
Description  ULANC Revision D Universal Local Area Network Controller with 2K x 8 On-Board RAM
PDF  72 Pages
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Manufacturer  SMSC [SMSC Corporation]
Direct Link  http://www.smsc.com
Logo SMSC - SMSC Corporation

COM20020D Datasheet(HTML) 62 Page - SMSC Corporation

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62
FIGURE 19 – NORMAL MODE TRANSMIT OR RECEIVE TIMING
(These signals are to and from the hybrid)
nPULSE2
t1
t3
t7
t8
Parameter
nPULSE1, nPULSE2 Pulse Width
nPULSE1, nPULSE2 Overlap
RXIN Period
RXIN Inactive Pulse Width
min
100
-10
max
units
nS
nS
nPULSE1
t1
t6
RXIN Active Pulse Width
t2
t2
nPULSE1, nPULSE2 Period
nS
t1
t3
400
0
+10
typ
RXIN
t6
t7
10
400
nTXEN
nS
nS
t2
t4
t5
LAST BIT
(400 nS BIT TIME)
t4
nTXEN Low to nPULSE1 Low
850
950
nS
t5
Beginning of Last Bit Time to nTXEN High
250
350
nS
100
t8
20
nS
Note: Use Only 2.5 Mbps



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