Rainbow Electronics DS2422 - Manual (Page 4)

DS2422/DS2423
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The highest valued bit of the E/S register, called AA or Authorization Accepted, acts as a flag to indicate
that the data stored in the scratchpad has already been copied to the target memory address. Writing data
to the scratchpad clears this flag.
HIERARCHICAL STRUCTURE FOR 1-WIRE PROTOCOL Figure 2
64-BIT LASERED ROM Figure 3
MSB LSB
8-BIT CRC CODE 48-BIT SERIAL NUMBER
8-BIT FAMILY CODE
(1CH = DS2422,
1DH = DS2423)
MSB LSB MSB LSB MSB LSB
1-WIRE CRC GENERATOR Figure 4