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Revision 2.3

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AS5134

Datasheet - Detailed Descr i pti on

7.4 Serial 2-Wire Connection (R/W Mode)

By connecting the configuration input C2 to VDD, the AS5134 is configured to 2-wire data transmission mode. Only Clock (DCLK) and Data

(DIO) signals are required. A Chip Select (CS) signal is automatically generated by the DX output, when a time-out of DCLK occurs.

Note: Read-only mode is also possible in this configuration.

Figure 6. 2-Wire R/W Mode

+5V

VDD

VDD

DCLK

DIO

VSS

VSS

C2

100nF

VSS

VDD

I/O

Output

1

2

3

4

5

67

D15

D14

D1

D0

DCLK

DIO

CS

DIO

command phase

data phase

t1

DIO read

DIO write

8

DX

CMD4

CMD3

CMD2

CMD1

CMD0

22

timeout phase

t0

t5

t6