ST25R3918 datasheet(75/142 Pages) STMICROELECTRONICS

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DS13490 Rev 1

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ST25R3918

Application information

141

4.5.12

EMD suppression configuration register

Address: 05h

Type: RW

Table 34. EMD suppression configuration register

Bit

Name

Default

Function

Comments

emd_emv

0: Disable EMD suppression

1: Enable EMD suppression

according to EMVCo

Bits no_rx_par and no_crc_rx must be set to 0,

and bit nrt_emv must be set to 1 when

emd_emv is enabled

rx_start_emv

0: Reception is enabled (I_rxs)

only if the first 4 bits of the frame

are error free

1: Reception is enabled (I_rxs)

also if there is an error in the first

four bits of the frame

Applies to ISO-A 106k only.

Must be set to 1 for EMVCo compliance.

5RFU

4RFU

emd_thld3

If the received frame is less than

emd_thld<3:0> bytes long then

EMD suppression will trigger on

reception errors

Must be set to 4 for EMVCo compliance.

emd_thld2

emd_thld1

emd_thld0

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