CLRC663 datasheet(90/177 Pages) NXP

90 / 177 page

NXP Semiconductors

CLRC663

High performance multi-protocol NFC frontend CLRC663 and CLRC663 plus

Bit

Symbol

Description

• 1h: Symbol0 is sent

• 2 h symbol1 is sent

• 3h Symbol2 is sent

1 to 0

StartSym

Defines which symbol is sent as start-symbol:

• 0h: No Symbol is sent

• 1h: Symbol0 is sent

• 2 h: Symbol1 is sent

• 3h: Symbol2 is sent

Table 156. FrameCon bits...continued

9.12 Receiver configuration registers

9.12.1 RxSofD

Bit

Symbol

RFU

SOF_En

SOFDetected

RFU

SubC_En

SubC_Detected

SubC_Present

Access

rights

r/w

Table 157. RxSofD register (address 34h)

Bit

Symbol

Description

7 to 6

RFU

SOF_En

If set and a SOF is detected an RxSOFIRQ is raised.

SOF_Detected

Shows that a SOF is or was detected. Can be cleared by SW.

RFU

SubC_En

If set and a subcarrier is detected an RxSOFIRQ is raised.

SubC_Detected

Shows that a subcarrier is or was detected. Can be cleared by SW.

SubC_Present

Shows that a subcarrier is currently detected.

Table 158. RxSofD bits

9.12.2 RxCtrl

Bit

Symbol

RxAllowBits

RxMultiple

RxEOFType

EGT_Check

EMD_Sup

Baudrate

Access

rights

r/w

Table 159. RxCtrl register (address 35h)

Bit

Symbol

Description

RxAllowBits

If set, data is written into FIFO even if CRC is enabled, and no complete byte has been

received.

Table 160. RxCtrl bits

CLRC663

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Product data sheet

Rev. 5.3 — 3 January 2024

90 / 177

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