ST25R3910 datasheet(36/65 Pages) STMICROELECTRONICS

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ST25R3910

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1.3

Registers

The 6-bit register addresses below are defined in hexadecimal notation. The possible

addresses range from 00h to 3Fh.

There are two types of registers implemented in the ST25R3910:

•

configuration registers

•

display registers

The configuration registers are used to configure the ST25R3910. They can be read and

written (RW) through the SPI. The display registers are read only (R); they contain

information about the ST25R3910 internal state.

Table 7. Registers map

Address

(hex)

Main function

Content

Type

Main

ISO Mode Definition Register

Operation Control Register

Configuration

Configuration Register 2

Configuration Register 3 (ISO-14443A and NFC)

Configuration Register 4 (ISO-14443B)

Configuration Register 5

Receiver Configuration Register

Interrupt and

associated reporting

Mask Interrupt Register

Interrupt Register

FIFO Status Register

Collision Register (ISO-14443A only)

Number of Transmitted Bytes Register 0

Number of Transmitted Bytes Register 1

ADC output

A/D Output Register

Antenna calibration

Antenna Calibration Register

External Trim Register

AM modulation depth

and Antenna driver

Modulation Depth Definition Register

Modulation Depth Display Register

Antenna Driver AM Modulated Level Definition

Antenna Driver Non-Modulated Level Definition

NFCIP field detection NFCIP Field Detection Threshold Register

Regulators

Regulator Display Register

Regulated Voltage Definition Register

Receiver state

Receiver State Display Register

ST25R3910 Datasheet(PDF) 36 Page - STMicroelectronics

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