Datasheet

DS2413: 1-Wire Dual Channel Addressable Switch
16 of 18
Figure 13. Noise Suppression Scheme
V
PUP
V
TH
V
HY
0V
t
REH
t
GL
t
REH
t
GL
Case A Case CCase B
COMMAND-SPECIFIC 1-Wire COMMUNICATION PROTOCOL—LEGEND
SYMBOL DESCRIPTION
RST 1-Wire Reset Pulse generated by master.
PD 1-Wire Presence Pulse generated by slave.
Select Command and data to satisfy the ROM function protocol.
PIOR Command "PIO Access Read".
PIOW Command "PIO Access Write".
FF loop 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