Rainbow-electronics DS2431 Manual do Utilizador descarregar pdf (Página 16)

DS2431: 1024-Bit, 1-Wire EEPROM

16 of 23

Figure 9-1. ROM Functions Flow Chart

From Figure 9

2

nd

Part

To Memory Functions

Flow Chart

(

Fi

g

ure 7

)

Master TX Bit 0

Master TX Bit 63

Master TX Bit 1

Bit 63

Match ?

RC = 0

DS2431 TX Bit 0

DS2431 TX Bit 0

Master TX Bit 0

DS2431 TX Bit 1

DS2431 TX Bit 1

Master TX Bit 1

DS2431 TX Bit 63

DS2431 TX Bit 63

Master TX Bit 63

RC = 1

Bit 1

Match ?

Bit 0

Match ?

Y

N

Y

N

Y

N

Bit 63

Match ?

RC = 0

RC = 1

Bit 1

Match ?

Bit 0

Match ?

Y

N

Y

N

Y

N

RC = 0

DS2431 TX

CRC B

y

te

DS2431 TX

Serial Number

(6 Bytes)

DS2431 TX

Family Code

(1 Byte)

RC = 0

To Figure 9

2

nd

Part

N

F0h

Search ROM

Command ?

N

55h

Match ROM

Command ?

N

CCh

Skip ROM

Command ?

YY YY

N

33h

Read ROM

Command ?

To Figure 9

2

nd

Part

From Memory Functions

Flow Chart

(

Fi

g

ure 7

)

Bus Master TX ROM

Function Command

DS2431 TX

Presence Pulse

OD

Reset Pulse ?

N

Y

OD = 0

Bus Master TX

Reset Pulse

From Fi

g

ure 9, 2

nd

Part

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 22 23

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