COM20020D Datasheet, PDF (19/72 Pages) SMSC Corporation – ULANC Revision D Universal Local Area Network Controller with 2K x 8 On-Board RAM

RT
75176B or
Equiv.
COM20020
+VCC
RBIAS
+VCC
RBIAS
RT
+VCC
RBIAS
COM20020
COM20020
FIGURE 5 - COM20020 NETWORK USING RS-485 DIFFERENTIAL TRANSCEIVERS
1
1
0
20MHZ
CLOCK
(FOR REF.
ONLY)
100ns
nPULSE1
100ns
nPULSE2
200ns
DIPULSE
RXIN
400ns
FIGURE 6 - DIPULSE WAVEFORM FOR DATA OF 1-1-0
19