SMSC COM20020 User Manual download pdf (Page 18)

18

MICRO-

SEQUENCER

AND

WORKING

REGISTERS

STATUS/

COMMAND

REGISTER

RESET

LOGIC

RECONFIGURATION

TIMER

NODE ID

LOGIC

OSCILLATOR

TX/RX

LOGIC

ADDITIONAL

REGISTERS

ADDRESS

DECODING

CIRCUITRY

2K x 8

AD0-AD2,

BUS

ARBITRATION

CIRCUITRY

nPULSE1

nPULSE2

nTXEN

XTAL1

XTAL2

nINTR

nRESET IN

RAM

A

0

/

n

M

U

X

A

1

A

2

/

B

A

L

E

nRD/nDS

nWR/DIR

nCS

D3-D7

RXIN

FIGURE 6 - INTERNAL BLOCK DIAGRAM

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 59 60

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