ST25R200 datasheet(47/88 Pages) STMICROELECTRONICS

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5.14.24

Protocol reception register 2

Address: 17h

Type: RW

Domain: RD

Table 39. Protocol reception register 2

Bit

Name

Default

Function

Comment

RFU

tr1_min_len6

tr1_min_len5

Minimum remaining TR1 length

defined in subcarrier periods

(0-127)

If TR1 is shorter than the minimum, a soft framing error is

reported. start_wait<5:0> needs to be taken into account.

tr1_min_len4

tr1_min_len3

tr1_min_len2

tr1_min_len1

tr1_min_len0

5.14.25

Protocol reception register 3

Address: 18h

Type: RW

Domain: RD

Table 40. Protocol reception register 3

Bit

Name

Default

Function

Comment

tr1_max_len7

Maximum remaining TR1

length defined in subcarrier

periods (0-255)

If TR1 is longer than the maximum, a soft framing error is

reported. start_wait<5:0> needs to be taken into account.

tr1_max_len6

tr1_max_len5

tr1_max_len4

tr1_max_len3

tr1_max_len2

tr1_max_len1

tr1_max_len0

5.14.26

EMD register 1

Address: 19h

Type: RW

Domain: RD

Table 41. EMD register 1

Bit

Name

Default

Function

Comment

emd_thld3

EMD threshold definition in number of

received bytes

If the received message length is less than the number of

bytes defined by emd_thld, then EMD suppression is

triggered.

emd_thld2

emd_thld1

emd_thld0

ST25R200

Application information

DS13658 - Rev 2

page 47/88

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