AS39513 datasheet(61/108 Pages) AMSCO

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ams Datasheet

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[v1-10] 2018-Apr-25

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AS39513 − Detailed Description

Factory EEPROM

Factory Trim and RFID Parameters

The factory trim and RFID parameter EEPROM page from

addresses 0x440 through 0x44F contains trim parameters to be

loaded during initialization and RFID factory-set parameters.

These values cannot be accessed through the RFID interface

unless noted in the field descriptions below. They can be read

through the SPI interface. They can be written through the SPI

interface if the Factory access password has been entered

previously using an SPI direct command. Bytes 0x440 through

0x443 are copied to registers at 0x640 through 0x643 during

device initialization. After initialization, if an SPI EEPROM write

occurs to the addresses 0x440 through 0x443, the

corresponding register in the 0x640 through 0x643 address

range is also updated.

Figure 39:

Factory Trim and RFID Parameters

Addr.

Bit

0x440

OSCTRIM[7:0]

0x441

LKALL

ROSTRIM[4:0]

0x442

V0TRIM[4:0]

0x443

TSENTRIM[3:0]

0x444

0x445

0x446

AFI_LK

DSF_LK

0x447

CHIPREV[7:0]

0x448

UID[7:0]

0x449

UID[15:8]

0x44A

UID[23:16]

0x44B

UID[31:24]

0x44C

UID[39:32]

0x44D

UID[47:40]

0x44E

UID[55:48]

0x44F

UID[63:56]

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