Rainbow Electronics DS1996 - Manual (Page 4)

DS1996
4 of 18
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