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AS5215
Datasheet - A p p l i c a t i o n I n f o r m a t i o n
8.6 Waveform – Digital Interface at Analog Readback of the Zener Diodes
To be sure that all Zener-Diodes are correctly burned, an analog readback mechanism is defined. Perform the ‘READ OTP ANA’ sequence
according to the command table and measure the value of the diode at the end of each phase.
Figure 16. Digital Interface at Analog Readback of Zener Diodes
CMD_PHASE
DATA_PHASE_EXTENDED
EXT D45
EXT D44
EXT D1
EXT D0
DCLK
CS
DIO
CMD4 CMD3 CMD2 CMD1 CMD0
OTP D45
OTP D44
OTP D43
OTP D0
PROG
perform analog measurements at PROG
Table 12. Serial Bit Sequence (16-bit read / write)
Write Command
Read / Write Data
C4
C3
C2
C1
C0
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
8.7 EasyZapp OTP Content
Each AS5215 die has an integrated 32-bit OTP ROM (Easyzapp) for trimming and configuration purposes. The PROM can be programmed via.
the serial interface. For irreversible programming, an external programming voltage at PROG pin is needed. For security reasons, the factory
trim bits can be locked by a lock bit.
Name
Hall Bias
DC offset
gain
Lock
invert_channel
cm_sin
cm_cos
Bit Count
6
1
2
1
1
1
1
OTP Start
0
6
7
13
11
10
9
OTP End
5
6
8
13
11
10
9
Access
user
user
user
austriamicrosystems
user
user
user
Comments
Sets overall sensitivity
Output DC offset setting
Programmable gain amplifier setting
Set in production test
Inverts SIN and COS channel before the
PGA for inverted output function
Common mode voltage output enabled at SINN /
CM pin
Common mode voltage output enabled at COSN /
CM pin
Remark: OTP assignment will be defined/updated.
www.austriamicrosystems.com/AS5215
Revision 1.11
19 - 26
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