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Revision 1.6

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AS5134

Data Sheet - D e ta i l e d D e s c r i p t i o n

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 (typ. 20µs).

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

Figure 5. 2-Wire R/W Mode

Table 6. 2-or 3-wire Read-only Serial Bit Sequence (21bit read)

Read

D20 D19 D18 D17 D16 D15 D14 D13 D12 D11 D10 D9

D8

D7

D6

D5

D4

D3

D2

D1

D0

00

0

0

0

C2 lock

AGC

Angle

D5

D4

D3

D2

D1

D0

D7

D6

D5

D4

D3

D2

D1

D0

1

2

3

4

5

6

7

21

20

D15

D14

D1

D0

DCLK

DIO

CS

DIO

command phase

data phase

t1

t9

t10

DIO read

DIO write

8

D13

D12

+5V

VDD

VDD

DCLK

DIO

VSS

VSS

C2

100n

VSS

VDD

I/O

Output