MFRC63002R datasheet(57/118 Pages) NXP

57 / 118 page

MFRC630

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Product data sheet

COMPANY PUBLIC

Rev. 3.1 — 6 September 2012

227531

57 of 118

NXP Semiconductors

MFRC630

Contactless reader IC

9.2 Command configuration

9.2.1 Command

Starts and stops command execution.

9.3 SAM configuration register

9.3.1 HostCtrl

Via the HostCtrl Register the interface access right can be controlled

Table 39.

Command register (address 00h)

Bit

Symbol

Standby

Modem

Off

RFU

Command

Access

rights

r/w

Table 40.

Command bits

Bit

Symbol

Description

Standby

Set to 1, the IC is entering power-down mode.

ModemOff

Set to logic 1, the receiver and the transmitter circuit is powering down.

5RFU

4 to 0

Command

Defines the actual command for the MFRC630.

Table 41.

HostCtrl register (address 01h);

Bit

Symbol

RegEn

BusHost

BusSAM

RFU

SAMInterface

RFU

Access

rights

r/w

Table 42.

HostCtrl bits

Bit

Symbol

Description

RegEn

If this bit is set to logic 1, the register can be changed at the next

BusHost

Set to logic 1, the bus control enables the host interface. This bit

cannot be set together with BusSAM. This bit can only be set if the bit

RegEn was previously set.

BusSAM

Set to logic 1, the bus control enables the SAM interface. This bit

cannot be set together with BusHost. This bit can only be set if the bit

RegEn is previously set.

4RFU

3 to 2

SAMInterface

0h:Interface switched off

1h:Interface SPI active

2h:Interface I2CL active

3h:Interface I2C

1 to 0

RFU

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