AS39513 datasheet(66/108 Pages) AMSCO

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[v1-10] 2018-Apr-25

AS39513 − Detailed Description

For descriptions of all of these parameters, see Logging Control

Parameters.

Factory Registers

Mirrored Factory Registers

The addresses 0x640 through 0x643 access registers whose

values are copied from the EEPROM addresses 0x440 through

0443 during device initialization. After initialization, if an

EEPROM write occurs to the addresses 0x440 through 0x443,

the corresponding register in the 0x640 through 0x643 address

range is also updated.

The mirrored factory register values cannot be accessed directly

through the RFID interface. They can also be written through

the SPI interface if Factory access is open. Writing to the address

locations 0x640 through 0x643 only changes the register value;

it does not change the EEPROM value. It is intended that the

calibration, and then the final values will be written into

EEPROM when the calibration is complete. These registers

cannot be read. Reading bytes from these address locations just

returns 0x00.

Figure 43:

Mirrored Factory Registers

For descriptions of all of these parameters, see Factory Trim and

RFID Parameters.

0x63F

WAKEMD

MEASPTR[11:8]

Addr.

Bit

0x640

OSCTRIM[7:0]

0x641

LKALL

ROSTRIM[4:0]

0x642

V0TRIM[4:0]

0x643

TSENTRIM[3:0]

Addr.

Bit

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