DS2406 Ver la hoja de datos (PDF) - Dallas Semiconductor -> Maxim Integrated

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Fabricante

DS2406

Dual Addressable Switch Plus 1K-Bit Memory

Dallas Semiconductor -> Maxim Integrated 

Memory Function Flow Chart (continued) Figure 7

DS2406

From Figure 7

1st Part

0Fh

N

Write Memory

?

Y

Bus Master TX

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

DS2406 sets Memory

Address = (T15:T0)

Bus Master TX

Data Byte (D7:D0)

Legend:

Decision made

by Bus Master

Decision made

by DS2406

To Figure 7

55h

N 3rd Part

Write Status

?

Y

Bus Master TX

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

DS2406 sets Memory

Address = (T15:T0)

Bus Master TX

Data Byte (D7:D0)

Bus Master RX CRC16 of Command,

Address, Data (1st pass); CRC16 of

Address, Data (subsequent passes)

Bus Master RX CRC16 of Command,

Address, Data (1st pass); CRC16 of

Address, Data (subsequent passes)

CRC

N

Correct ?

Y

Bus Master TX

Program Pulse

DS2406 copies Scratch-

pad to Data EPROM

Bus Master RX Byte

from Data EPROM

S

R

Bus Master

TX FFh or

Program Pulse

DS2406 copies

Scratchpad to

Volatile Status

N

CRC

Correct ?

Y

N

Address < 7

?

Y

Bus Master TX

Program Pulse

DS2406 copies Scratch-

pad to Status EPROM

EPROM

N

Byte Correct

?

Y

End of

Y

Data Mem.

?

N

DS2406 increments

Address Counter

Bus Master RX

Byte From

Volatile Status

Bus Master TX

Reset Pulse

Bus Master RX Byte

from Status EPROM

N

EPROM

Byte Correct

?

Y

DS2406 increments

Address Counter

DS2406 loads new Address

into CRC Generator

DS2406 TX

Presence Pulse

DS2406 loads new Address

into CRC Generator

Vertical

Spare

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