AS5134 datasheet(17/33 Pages) AMSCO

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Revision 2.3

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AS5134

Datasheet - Detailed Descr i pti on

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

Bidirectional data input output

DIO

Command and data information over one single line. The first bit of the command

defines a read or write access.

Daisy Chain Port

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.

Port

Symbol

Function

C4 C3 C2 C1 C0 D15 D14 D13

D0 C4

C0 D15 D14

D0 C4

C0 D15 D14

DCLK

CS(1)

CS_INT(1)

DX(1) = CS(2)

CS_INT(2)

DX(2) = CS(3)

CS_INT(3)

CMD(1)

Data(1)

CMD(2)

Data(2)

CMD(3)

Data(3)

CMD(1)

DIO

CLK

DIO

CLK

DIO

CLK

DIO

CLK

DX(1)

DX(2)

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