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Revision 1.11
8 - 20
AS5115
Datasheet - Detailed Description
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
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