DS2417

3 of 15

64-bit ROM and ROM Function Control section allow the DS2417 to operate as a 1-Wire device and

follow the 1-Wire protocol detailed in the section "1-Wire Bus System".

HIERARCHICAL STRUCTURE FOR 1-WIRE PROTOCOL Figure 2

DS2417

Command

Level

Available

Commands

Data Fields

Affected

1-Wire Bus

Other

Devices

Bus

Master

DS2417 specific

Function Commands

(see Figure 5)

Write Clock

Read Clock

RTC Counter, Device Control

RTC Counter, Device Control

Read ROM

Match ROM

Search ROM

Skip ROM

64-bit ROM

64-bit ROM

64-bit ROM

N/A

1-Wire ROM Function

Commands (see Figure 7)

64-BIT LASERED ROM Figure 3

MSB

LSB

8-Bit CRC Code

48-Bit Serial Number

8-Bit Family Code (27h)

MSB

LSB

MSB

LSB

MSB

LSB

1-WIRE CRC GENERATOR Figure 4

R

8TH

STAGE

7TH

STAGE

6TH

STAGE

5TH

STAGE

4TH

STAGE

3RD

STAGE

2ND

STAGE

1ST

STAGE

S

INPUT DATA