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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

7 Detailed Description

Connecting the AS5134

The AS5134 can be connected to an external controller in several ways as listed below:

Serial 3-wire R/W connection

Serial 3-wire Read-only connection

Serial 2-Wire connection (R/W Mode)

Serial 2-Wire Differential SSI connection

1-Wire PWM connection

Analog output

Analog Sin/Cos outputs with external interpolator

Quadrature A/B/Index output

Brushless DC Motor Commutation Mode

Serial 3-Wire R/W Connection

In this mode, the AS5134 is connected to the external controller via three signals: Chip Select (CS), Clock (DCLK)

inputs and bi-directional DIO (Data In/Out) output. The controller sends commands over the DIO pin at the beginning of

each data transmission sequence, such as reading the angle or putting the AS5134 in and out of the reduced power

modes.

Figure 3. SSI Read/Write Serial Data Transmission

A pull-down resistor (as shown in Figure 4) is not required. C1 and C2 are hardware configuration inputs. C1 must

always be connected to VSS, C2 selects 3-wire mode (C2 = low) or 2-wire mode (C2 = high).

+5V

VDD

VDD

CS

DCLK

DIO

VSS

VSS

C2

100n

VSS

VDD

I/O

Output

Output