AS5171 datasheet(17/42 Pages) AMSCO

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[v1-01] 2016-Feb-17

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AS5171 − Register Description

The second frame contains the read/write command (D[7] = 0

Write, D[7] = 1 Read) and the address of the register (D[6:0] =

ADDRESS).

The content of the third and fourth frames (DATA1 and DATA2)

will be written to or read from the location specified by

ADDRESS and ADDRESS+1, respectively.

Figure 19 and Figure 20 show examples of read and write.

Figure 19:

Example of Write (Reg[0x22] = 0x18, Reg[0x23] = 0xA2)

Figure 20:

Example of Read (Reg[0x2B], Reg[0x2C])

Exiting Communication Mode

Communication mode is exited and operational mode is

entered with a Pass-to-function (P2F) command, by writing to

the virtual registers 0x60 and 0x61:

P2F: write(0x60) = 0x70, write(0x61) = 0x51

No more commands can be sent after sending this command,

because the device is permanently placed in operational mode.

Programming OTP Registers

The BURNOTP command writes the OTP registers with their

programmed values. The command is issued by writing to

virtual registers 0x62 and 0x63:

BURNOTP: write(0x62) = 0x70, write(0x63) = 0x51.

11 0

1 0

0 0

0x55*

0x22

00 1

0 0

0x18

0xA2

11 0

1 0

0x55

0x2B

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