Rainbow-electronics DS2432 Manual de usuario descargar pdf (Pagina 8)

PRELIMINARY DS2432

8 of 30

Memory and SHA Functions Flow Chart Figure 7

0Fh

Write Scratch-

pad ?

Master

TX Reset ?

Master TX Data Byte

To Scratchpad

Bus Master TX

TA1 (T7:T0), TA2 (T15:T8)

Y

N

Y

N

N

Address

< 90h ?

Y

Bus Master

RX “1”s

Master

TX Reset ?

Y

N

DS2432 sets Scratchpad

Byte Counter = 0,

Clears PF, AA,

Sets T2:T0 = 0, 0, 0,

Sets E2:E0 = 1, 1, 1

Byte Counter

= 7 ?

DS2432 TX CRC16

of Command, Address,

Data Bytes as they were

sent by the bus master

DS2432

Increments

Byte Counter

Master

TX Reset ?

Y

N

Bus Master

RX “1”s

Partial

Byte ?

PF = 1

Y

N

N

Y

To Figure 7

2

nd

Part

From Figure 7

2

nd

Part

Bus Master TX Memory

Function Command

To ROM Functions

Flow Chart (Figure 9)

From ROM Functions

Flow Chart (Figure 9)

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 29 30

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