Rainbow-electronics DS1904 Manuale Utente Scaricare il pdf (Pagina 8)

DS1904

8 of 12

ROM FUNCTIONS FLOW CHART Figure 7

F0H

Search ROM

Command

?

DS1904 TX Bit 0

DS1904 TX Bit 0

Master TX Bit 0

Bit 0

Match ?

DS1904 TX Bit 1

DS1904 TX Bit 1

Master TX Bit 1

Bit 1

Match ?

DS1904 TX Bit 63

DS1904 TX Bit 63

Master TX Bit 63

Bit 63

Match ?

Master TX Control

Function Command

33H

Read ROM

Command

?

DS1904 TX

Serial Number

6 Bytes

DS1904 TX

CRC Byte

DS1904 TX

Family Code

1 Byte

Match ROM

55H

Command

?

Bit 0

Match ?

Bit 1

Match ?

Bit 63

Match ?

Master TX Bit 1

Master TX Bit 0

N

Y

N

Y

NN

Y

NN

NN

Y

Y

Y

Y

Y

Y

(SEE FIGURE 5)

Master TX ROM

Function Command

Master TX

Reset Pulse

DS1904 TX

Presence Pulse

CCH

Skip ROM

Command

?

N

Y

N

Master TX Bit 63

1 2 3 4 5 6 7 8 9 10 11 12

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