DS2406 Maxim, DS2406 Datasheet - Page 11

• Manufacturer Part Number: DS2406
• Description: The DS2406 Dual Addressable Switch Plus Memory offers a simple way to remotely control a pair of open drain transistors and to monitor the logic level at each transistor's output via the 1-Wire® bus for closed loop control
• Manufacturer: Maxim

Memory Function Flow Chart (continued) Figure 7
From Figure 7
1st Part
Bus Master RX CRC16 of Command,
Address, Data (subsequent passes)
Address, Data (1st pass); CRC16 of
DS2406 loads new Address
TA1(T7:T0), TA2 (T15:T8)
DS2406 sets Memory
into CRC Generator
DS2406 copies Scratch-
Address = (T15:T0)
pad to Data EPROM
Bus Master RX Byte
DS2406 increments
from Data EPROM
Data Byte (D7:D0)
Address Counter
Bus Master TX
Bus Master TX
Bus Master TX
Program Pulse
Write Memory
Byte Correct
Data Mem.
Correct ?
Vertical
EPROM
Spare
End of
CRC
0Fh
?
?
?
Y
Y
N
Y
N
N
N
Y
Legend:
Decision made
Decision made
by Bus Master
S
DS2406 copies
Bus Master RX
Presence Pulse
Volatile Status
Volatile Status
Program Pulse
by DS2406
Scratchpad to
Bus Master TX
Bus Master
Reset Pulse
DS2406 TX
TX FFh or
Byte From
11 of 32
R
Bus Master RX CRC16 of Command,
Address, Data (subsequent passes)
Address, Data (1st pass); CRC16 of
DS2406 loads new Address
TA1(T7:T0), TA2 (T15:T8)
into CRC Generator
DS2406 sets Memory
N
N
N
DS2406 copies Scratch-
Address = (T15:T0)
pad to Status EPROM
Bus Master RX Byte
from Status EPROM
DS2406 increments
Data Byte (D7:D0)
Address Counter
Bus Master TX
Bus Master TX
Program Pulse
Bus Master TX
Write Status
Byte Correct
Address < 7
Correct ?
EPROM
CRC
55h
?
?
?
Y
Y
Y
Y
N
To Figure 7
3rd Part