ML7406 datasheet(36/104 Pages) LAPIS

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FEDL7406-02

ML7406

36/104

○Field check function

ML7406 has the function of caparing the 9 bytes following L-field (Format A/B: start from C-field, Format C: start from

Data-field) in a receiving packet. Based on comparison with the expected data, possible to generate interrupts (Field check

function). Field check can be possible with the following register setting. When using this function, RXDIO_CTRL[1:0]

([DIO_SET:B0 0x0C(7-6)] ) =0b00 (FIFO mode) or 0b11 (data output mode 2) setting is required.

Function

RX data process setting when Field check unmatched

[C_CHECK_CTRL: B0 0x1B(7)]

Field check interrupt setting

[C_CHECK_CTRL: B0 0x1B(6)]

C-field detection enable setting

[C_CHECK_CTRL: B0 0x1B(4-0)]

M-field detection enable setting

[M_CHECK_CTRL: B0 0x1C(3-0)]

A-field detection enable setting

[A_CHECK_CTRL: B0 0x1D(5-0)]

C-field code setting

[C_FIELD_CODE1: B0 0x1E]

[C_FIELD_CODE2: B0 0x1F]

[C_FIELD_CODE3: B0 0x20]

[C_FIELD_CODE4: B0 0x21]

[C_FIELD_CODE5: B0 0x22]

M-field code setting

[M_FIELD_CODE1: B0 0x23]

[M_FIELD_CODE2: B0 0x24]

[M_FIELD_CODE3: B0 0x25]

[M_FIELD_CODE4: B0 0x26]

A-field code setting

[A_FIELD_CODE1: B0 0x27]

[A_FIELD_CODE2: B0 0x28]

[A_FIELD_CODE3: B0 0x29]

[A_FIELD_CODE4: B0 0x2A]

[A_FIELD_CODE5: B0 0x2B]

[A_FIELD_CODE6: B0 0x2C]

The following describes the relation between each comparison code and incoming RX data.

[Format A/B(Wireless M-Bus)]

Field check can be controlled by setting disabled/enabled for each comparison code (1 byte). If all specified Field data

(C-field/M-field/A-field) are matched, Field checking matching will be notified. However, if C-field data and

C_FIELD_CODE5 are matched, even if other Field data (M-field/A-field) are not matched, Field check result will be notified

as ”match”.

MSB

Preamble

Sync

Word

field

1st Block

field

byte

bytes

10/18/

32bits

Over n*2

bit

bytes

CRC

field

0/2

bytes

C1: [C_FIELD_CODE1: B0 0x1E]

C2: [C_FIELD_CODE2: B0 0x1F]

C3: [C_FIELD_CODE3: B0 0x20]

C4: [C_FIELD_CODE4: B0 0x21]

C5: [C_FIELD_CODE5: B0 0x22]

A1. [A_FIELD_CODE1: B0 0x27]

A2. [A_FIELD_CODE2: B0 0x28]

A3. [A_FIELD_CODE3: B0 0x29]

A4. [A_FIELD_CODE4: B0 0x2A]

A5. [A_FIELD_CODE5: B0 0x2B]

A6. [A_FIELD_CODE6: B0 0x2C]

LSB

M1. [M_FIELD_CODE1: B0 0x23]

M2. [M_FIELD_CODE2: B0 0x24]

M3. [M_FIELD_CODE3: B0 0x25]

M4. [M_FIELD_CODE4: B0 0x26]

ML7406 Datasheet(PDF) 36 Page - LAPIS Semiconductor Co., Ltd.

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