DS2411X データシートの表示（PDF） - Dallas Semiconductor -> Maxim Integrated

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DS2411X

Silicon Serial Number with VCC Input

Dallas Semiconductor -> Maxim Integrated 

NOISE SUPPRESSION SCHEME Figure 8

VPUP

tREH

VTH

VHY

0V

Case A

Case B

tGL

tREH

Case C

tGL

DS2411

CRC GENERATION

To validate the registration number transmitted from the DS2411, the bus master can generate a CRC

value from the 8-bit family code and unique 48-bit serial number as it is received. If the CRC matches the

last 8 bits of the registration number, the transmission is error free.

The equivalent polynomial function of this CRC is: CRC = x8 + x5 + x4 + 1.

CUSTOM DS2411

Customization of a portion of the unique 48-bit serial number by the customer is available. Dallas

Semiconductor will register and assign a specific customer ID in the 12 most significant bits of the 48-bit

field. The next most significant bits are selectable by the customer as a starting value, and the least

significant bits are non-selectable and will be automatically incremented by one. Certain quantities and

conditions apply for these custom parts. Contact your Maxim/Dallas Semiconductor sales representative

for more information.

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