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AS5130

Datasheet - Detailed Descr i pti on

7.2 Serial Synchronous Interface (SSI)

7.2.1 Commands of the SSI in Normal Mode

WD2COS / WD2SIN: xen_X disables Hall element X from the sensor array in the cosine or sine channel; xinv_X inverts the voltage output of Hall

element X in the channels.

RD2COS / RD2SIN: The Hall array configuration for cosine and sine channel can be read out by these commands, initial values are 0.

SET TEST CFG 1: gen_rst HI triggers a digital reset.

WRITE CONFIG: go2sleep HI activates the low power mode of the AS5130. The power consumption is significantly reduced. go2sleep LO

returns to normal operation mode. During low power mode, the lock bit in command 0 and command 1 is LO.

WRITE CUST: With “wlsb_x” the threshold level for generation of a WAKE pulse is set (only important in polling mode). The initial value is 4 LSB.

No value lower than 4 LSB can be set. The maximum value is 127 LSB.

“gain_x” sets the gain in the signal

HYST_RST: “setHyst” enables an additional hysteresis of the digital output signal. It is enabled by default. Only after 2 consecutive equal signals

the output is changed.

“rst_otp” forces the IC to read out the OTP in polling mode. This reset has to be performed after initial startup and every WAKE signal.

“rst_multi” resets the multi turn counter to 0.

READ CUST: With this command “wlsb_x” and “gain_x” can be read out.

RD_BOTH: Angle and multi turn counter value can be read out simultaneously by this command. Due to limited data size, the parity bit is not

available in this command.

STORE REF: This command stores the actual angle as reference angle in the storage registers (only important in polling mode). The output is

the stored angle (angle_stored), a flag, if the voltage at DVDD is OK (store_ok), a flag, if the supply voltage is OK (vdd_ok) and a check bit, if the

register was written.

RD_MULTI: Command for read out of multi turn register (multiturn) and AGC value (agc). “Lock” indicates a locked ADC and “parity” an even

parity checksum.

RD_ANGLE: Command for read out of angle value and AGC value (agc). “Lock” indicates a locked ADC and “parity” an even parity checksum.

Table 9. SSI in Normal Mode

#

cmd

bin

mode

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

23

WRITE CUST

10111

write

wlsb <6:0>

gain <2:0>

nc

22

WD2COS

10110

write

xen_7

inv_7 xen_6 inv_6 xen_5 inv_5 xen_4 inv_4 xen_3 inv_3 xen_2 inv_2 xen_1 inv_1 xen_0 inv_0

21

SET TEST

CFG1

10101

write

gen_r

st

20

reserved

10100

write

19

HYST_RST

10011

write

rst_otp

nc

rst_m

ulti

nc

setHy

st

18

WD2SIN

10010

write

xen_7

inv_7 xen_6 inv_6 xen_5 inv_5 xen_4 inv_4 xen_3 inv_3 xen_2 inv_2 xen_1 inv_1 xen_0 inv_0

17

WRITE

CONFIG

10001

write

go2sle

ep

16

--

10000

write

7

READ CUST

00111

read

wlsb <6:0>

gain <2:0>

nc

parity

6

RD2COS

00110

read

xen_7

inv_7 xen_6 inv_6 xen_5 inv_5 xen_4 inv_4 xen_3 inv_3 xen_2 inv_2 xen_1 inv_1 xen_0 inv_0

5

00101

read

4

RD_BOTH

00100

read

Multiturn <7:0>

angle <7:0>

3

STORE REF

00011

read

store_

ok

vdd_ok reg_s

et

nc

angle_stored <7:0>

parity

2

RD2SIN

00010

read

xen_7

inv_7 xen_6 inv_6 xen_5 inv_5 xen_4 inv_4 xen_3 inv_3 xen_2 inv_2 xen_1 inv_1 xen_0 inv_0

1

RD_MULTI

00001

read

lock

agc <5:0>

Multiturn <7:0>

parity

0

RD_ANGLE

00000

read

lock

agc <5:0>

angle <7:0>

parity