HIERARCHICAL STRUCTURE FOR 1-WIRE PROTOCOL Figure 2
DS1996
BUS
MASTER
1-WIRE BUS
DS 1996
OTHER
DEVICES
COMMAND
LEVEL:
1-WIRE ROM FUNCTION
COMMANDS (SEE FIGURE 9)
DS 1996- SPECIFIC
MEMORY FUNCTION
COMMANDS
(SEE FIGURE 7)
64-BIT LASERED ROM Figure 3
AVAILABLE
COMMANDS:
READ ROM
MATCH ROM
SEARCH ROM
SKIP ROM
OVERDRIVE SKIP ROM
OVERDRIVE MATCH ROM
WRITE SCRATCHPAD
READ SCRATCHPAD
COPY SCRATCHPAD
READ MEMORY
DATA FIELDS
AFFECTED:
64-BIT ROM
64-BIT ROM
64-BIT ROM
N/A
N/A
64-BIT ROM
256-BIT SCRATCHPAD
256-BIT SCRATCHPAD
64K-BIT MEMORY
64K-BIT MEMORY
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
4 of 19
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