DS2482-100 Dallas Semiconducotr, DS2482-100 Datasheet - Page 19

• Manufacturer Part Number: DS2482-100
• Description: Single-Channel 1-Wire Master
• Manufacturer: Dallas Semiconducotr

1-Wire Single Bit, e.g., to Generate a Single Time Slot on the 1-Wire Line
Case A: 1-Wire Idle (1WB = 0), No Busy Polling
The idle time is needed for the 1-Wire function to complete. Then access the device in read mode to get the result
from the 1-Wire single-bit command.
Case B: 1-Wire Idle (1WB = 0), Busy Polling Until the 1-Wire Command is Completed
When 1WB has changed from 1 to 0, the Status register holds the valid result of the 1-Wire Single Bit command.
Case C: 1-Wire Busy (1WB = 1)
The master should stop and restart as soon as the DS2482 does not acknowledge the command code.
1-Wire Triplet, e.g., to Perform a Search ROM Function on the 1-Wire Line
Case A: 1-Wire Idle (1WB = 0), No Busy Polling
The idle time is needed for the 1-Wire function to complete. Then access the device in read mode to get the result
from the 1-Wire Triplet command.
Case B: 1-Wire Idle (1WB = 0), Busy Polling Until the 1-Wire Command is Completed
When 1WB has changed from 1 to 0, the Status register holds the valid result of the 1-Wire Triplet command.
Case C: 1-Wire Busy (1WB = 1)
The master should stop and restart as soon as the DS2482 does not acknowledge the command code.
S
S
S
S
S
S
AD,0
AD,0
AD,0
AD,0
AD,0
AD,0
A
A
A
A
A
A
1WSB
1WSB
1WSB
1WT
1WT
1WT
A\
A\
A
A
A
A
Sr
Sr
S
S
<byte>
<byte>
<byte>
<byte>
P
P
AD,1
AD,1
AD,1
AD,1
19 of 21
A
A
A
A
A
A
A
A
P
P
<byte>
<byte>
<byte>
<byte>
(Idle)
(Idle)
A\
A\
A
A
<byte>
<byte>
P
P
Repeat until the 1WB
bit has changed to 0.
Repeat until the 1WB
bit has changed to 0.
A\
A\
P
P