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AS5115

Datasheet - Detailed Descr i pti on

7.3 Device Communication / Programming

Note: “r” stands for reserved bits. They must not be modified, unless otherwise noted.

Remark:

1. Send EN PROG (command 16) in normal mode before accessing the OTP in extended mode.

2. OTP assignment will be defined/updated.

Command

5-bit command: cmd<4:0>

 bit<50:46>

Data

34-bit data: data<45:0>

 bit<45:0>

Interface Modes

Normal read operation mode

cmd<4:0> = <00xxx>

 1 DCLK per data bit

Extended read operation mode

cmd<4:0> = <01xxx>

 4 DCLK per data bit

Normal write operation mode

cmd<4:0> = <10xxx>

 1 DCLK per data bit

Extended write operation mode

cmd<4:0> = <11xxx>

 4 DCLK per data bit

Table 10. Digital Interface at Normal Mode

#

command

bin

mode

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

23

WRITE_CONFIG

10111

write

go2sleep

gen_rst

analog_sig

OB_bypassed

16

EN_PROG

10000

write

1

0

0

0

1

1

0

0

1

0

1

0

1

1

1

0

Name

Functionality

go2sleep

Enter/leave low power mode (no output signals)

gen_rst

Generates global reset

analog_sig

Switches the channels to the test bus after the PGA

OB_bypassed

Disable and bypass output buffer for testing purpose

Table 11. Digital Interface at Extended Mode

#

command

bin

mode

Factory Settings

User Settings

<45:44> <43:

26>

<25:23> <22:20> <19:18> <17:14> <13> <12>

<11>

<10>

<9>

<8:7>

<6>

<5:0>

31

WRITE_OTP

11111

xt write

r

r

r

r

r

r

r

r

invert_

channel

cm_sin

cm_cos

gain

dc_

offset

hall_

bias

25

PROG_OTP

11001 xt write

r

r

r

r

r

r

r

r

invert_

channel

cm_sin

cm_cos

gain

dc_

offset

hall_

bias

15

RD_OTP

01111

xt read

r

r

r

r

r

r

r

r

invert_

channel

cm_sin

cm_cos

gain

dc_

offset

hall_

bias

9

RD_OTP_ANA

01001 xt read

Name

Functionality

invert_channel Inverts

SIN and COS channel before the PGA for inverted output function (0

 SIN/COS, 1  SINN/COSN)

cm_sin

Common mode voltage output enabled at SINN / CM pin (0

 differential, 1  common)

cm_cos

Common mode voltage output enabled at COSN / CM pin (0

 differential, 1  common)

gain

PGA gain setting (influences overall magnetic sensitivity), 2-bit

dc_offset

Output DC bias offset (0

 Voffset1=1.5V, 1  Voffset2=2.5V)

Hall_b

Hall bias setting (influences overall magnetic sensitivity), 6-bit

Parameter

Notes