Rainbow-electronics DS1996 Instrukcja Użytkownika Pobierz pdf (Strona 4)

DS1996

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HIERARCHICAL STRUCTURE FOR 1-WIRE PROTOCOL Figure 2

64-BIT LASERED ROM Figure 3

8-Bit CRC Code 48-Bit Serial Number 8-Bit Family Code (0CH)

MSB LSB MSB LSB MSB LSB

1-WIRE CRC GENERATOR Figure 4

BUS

MASTER

OTHER

DEVICES

DS 1996

COMMAND AVAILABLE DATA FIELDS

LEVEL: COMMANDS: AFFECTED:

READ ROM 64-BIT ROM

MATCH ROM 64-BIT ROM

SEARCH ROM 64-BIT ROM

SKIP ROM N/A

OVERDRIVE SKIP ROM N/A

OVERDRIVE MATCH ROM 64-BIT ROM

WRITE SCRATCHPAD 256-BIT SCRATCHPAD

READ SCRATCHPAD 256-BIT SCRATCHPAD

COPY SCRATCHPAD 64K-BIT MEMORY

READ MEMORY 64K-BIT MEMORY

DS 1996- SPECIFIC

MEMORY FUNCTION

COMMANDS

(SEE FIGURE 7)

1-WIRE ROM FUNCTION

COMMANDS (SEE FIGURE 9)

1-WIRE BUS

1 2 3 4 5 6 7 8 9 ... 17 18

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Rainbow-electronics DS1996 Instrukcja Użytkownika Strona 4