AS5134
Datasheet - D e t a i l e d D e s c r i p t i o n
Port
Bidirectional data input output
Daisy Chain Port
Symbol
DIO
Dx
Function
Command and data information over one single line. The first bit of the command
defines a read or write access.
This port enables the daisy chain configuration of several devices.
Three wire mode: Indicates the end of an interface cycle. Dx can be used as the
chip select signal for the next device in the chain.
Two wire mode: Will be set with the first falling edge of DCLK and hence, indicates
a running clock; it will be cleared at the end of the command sequence or after a
timeout phase. Dx can be used as a chip select signal in the two wire mode.
Waveform – Digital Interface at Three Wire Daisy Chain Mode
Note: Defined if the Pin C2 is set to LO at all devices.
Figure 14. 3-Wire Daisy Chain Mode
CMD(1)
Data(1)
CMD(2)
Data(2)
CMD(3)
Data(3)
CMD(1)
C4 C3 C2 C1 C0 D15 D14 D13
D0 C4
C0 D15 D14
D0 C4
C0 D15 D14
D0
DCLK
CS(1)
CS_INT(1)
DX(1) = CS(2)
CS_INT(2)
DX(2) = CS(3)
CS_INT(3)
DIO
CLK
DX
DX(1)
DIO
CLK
DX
DX(2)
DIO
CLK
DX
DIO
CS
LO
C2
CS
LO
C2
CS
LO
C2
CS
CLK
www.austriamicrosystems.com/AS5134
Revision 2.3
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