DS2413: 1-Wire Dual Channel Addressable Switch
tREH
Figure 13. Noise Suppression Scheme
tREH
VPUP
VTH
VHY
Case A
Case B
Case C
tGL
0V
tGL
COMMAND-SPECIFIC 1-Wire COMMUNICATION PROTOCOL—LEGEND
SYMBOL
DESCRIPTION
1-Wire Reset Pulse generated by master.
1-Wire Presence Pulse generated by slave.
Command and data to satisfy the ROM function protocol.
Command "PIO Access Read".
RST
PD
Select
PIOR
PIOW
FF loop
Command "PIO Access Write".
Indefinite loop where the master reads FF bytes.
COMMAND-SPECIFIC 1-Wire COMMUNICATION PROTOCOL—COLOR CODES
Master to slave
Slave to master
PIO ACCESS READ (CANNOT FAIL)
RST
PD
Select
PIOR
<PIO Status Byte>
Continues until master sends Reset Pulse
PIO ACCESS WRITE (SUCCESS)
RST
PD
Select
PIOW
<PIO Output data>
<PIO Output data>
<AAh>
<PIO Status Byte>
Loop until master sends Reset Pulse
PIO ACCESS WRITE (INVALID DATA BYTE)
RST
PD
Select
PIOW
<PIO Output data>
<invalid data byte>
FF loop
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MAXIM [ MAXIM INTEGRATED PRODUCTS ]
