KMA321 datasheet(46/71 Pages) NXP

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NXP Semiconductors

KMA321/A

Programmable angle sensor IC

16.5 Registers

16.5.1 Signatures

The command mode can be entered with different signatures with different access rights

to the non-volatile memory regions. Table 49 shows the level of access for the different

regions of the non-volatile memory depending on the signature used.

Signature

Value

Command

registers

Customer area

Traceability

A (OEM)

7253h

R/W

-/-

R/W

-/-

B (tier 1)

8364h

R/W

R/-

Table 49. Signatures

16.5.2 Command registers

To enter the command mode, write the signature given in Table 49 into the specific

command, the signature follows it, but after a power-on reset and not later than tcmd(ent).

Command

write/read

Bit

Access

Description

diagnostic error detected

diagnostic error detected in data path

R/W

force diagnostic mode off (no signaling)

0b – enable

1b – disable

low voltage detected

high voltage detected

single-bit error of non-volatile memory detected and corrected

double-bit error of non-volatile memory detected

checksum error of customer area 1, 2 or 3 detected

oscillator frequency out of range detected

voltage above programmed threshold detected

voltage below programmed threshold detected

temperature above programmed threshold detected

undefined[1]

command mode signature A (OEM) detected

command mode signature B (tier 1) detected

B0h/B1h

CTRL1

reserved

Table 50. Command registers

KMA321_A

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Product data sheet

Rev. 6 — 18 May 2022

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