ML7406 datasheet(46/104 Pages) LAPIS

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FEDL7406-02

ML7406

46/104

[RX]

i) Continuous output mode (to host)

Set RXDIO_CTRL[1:0] ([DIO_SET: B0 0x0C(7-6)])=0b01.

After RX_ON (SET_TRX[3:0]([RF_STATUS: B0 0x0B(3-0)])=0x6) issued, during SCEN is ”H” period, DCLK is output from

SDO pin, RX data is output from SDI pin at falling edge of DCLK. After TRX_OFF issuing(SET_TRX[3:0] ([RF_STATUS:

B0 0x0B(3-0)])=0x8), DCLK/DIO output will stop. Even if DCLK/DIO are output, when SCEN becomes “L”, DCLK/DIO

will stop. (SPI access has a higher priority)

(Note)

Not to access SPI until RX completion. During packet receiption, if SPI access is attemped by the host, RX data error can be

expected. It is recommended

ii) Data ouput mode 1 or data output mode 2 (to host)

Set RXDIO_CTRL[1:0] ([DIO_SET: B0 0x0C(7-6)])=0b10/11

After RX_ON, RX data upon SyncWord (output mode 1) or RX data upon L-fileld (output mode 2) is buffered in RX_FIFO.

During SCEN is ”H”, by DIO_START([DIO_SET: B0 0x0C(0)])=0b1, top data of buffered data will be output through DIO

interface (DIO/DCLK). (RX data is output at falling edge of DCLK). Other output condition is same as the case of using

GPIO:/ECT_CLK pins. After TRX_OFF isuing, DCLK/DIO output will stop. Even during DCLK/DIO are output period, if

SCEN becomes “L”, DCLK/DIO output will stop. (SPI access has a priority)

(In case of data output mode1)

(Note)

Not to access SPI until RX completion. During packet receiption, if SPI access is attemped by the host, RX data error can be

expected.

RX_ON

command

RX data

Preamble

SyncWord

Data-field

TRX_OFF

command

SCEN

RXON

RX_ON

command

RX data

Preamble

SyncWord

Data-field

TRX_OFF

command

SCEN

DIO_RX_COMPLETE

=0b1

DIO_START

=0b1

DIO(SDI)

DCLK(SDO)

DIO(SDI)

DCLK(SDO)

ML7406 Datasheet(PDF) 46 Page - LAPIS Semiconductor Co., Ltd.

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