ML7406 datasheet(21/104 Pages) LAPIS

21 / 104 page

FEDL7406-02

ML7406

21/104

●LSI state transition control

○LSI state transition instruction

State can be controlled from MCU by setting registers below.

State transition command

Instruction

TX_ON

SET_TRX ([RF_STATUS: B0 0x0B(3-0)]) = 0b1001

RX_ON

SET_TRX ([RF_STATUS: B0 0x0B(3-0)]) = 0b0110

TRX_OFF

SET_TRX ([RF_STATUS: B0 0x0B(3-0)]) = 0b1000

Force_TRX_OFF

SET_TRX ([RF_STATUS: B0 0x0B(3-0)]) = 0b0011

SLEEP

SLEEP_EN([SLEEP/WU_SET: B0 0x2D(0)]) = 0b1

VCO_CAL

VCO_CA_LSTART([VCO_CAL_START: B0 0x6F(0)])= 0b1

State can be changed without command from MCU. If one of the following condition is met, state is changed automatically

according to the following table. In order to enable these functions, the following registers must be programmed.

Function

Control bit name

Automatic TXON after FIFO write completion (AUTO_TX)

AUTO_TX_EN([RF_STATUS_CTRL: B0 0x0A(4)])

Automatic TXON during FIFO wrtie (FAST_TX)

FAST_TX_EN([RF_STATUS_CTRL: B0 0x0A(5)])

RF state setting after packet transmission completion

TXDONE_MODE([RF_STATUS_CTRL: B0 0x0A(1-0)])

RF state setting after packet reception completion

RXDONE_MODE([RF_STATUS_CTRL: B0 0x0A(3-2)])

Automatic RX_ON/TX_ON by Wake-up time

WAKEUP_MODE([SLEEP/WU_SET:B0 0x2D(6)])

WAKEUP_EN([SLEEP/WU_SET:B0 0x2D(4)])

Automatic VCO calibration after exit from SLEEP

AUTO_VCOCAL_EN([VCO_CAL_START: B0 0x6F(4)])

Automatic SLEEP by Timer

WU_DURATION_EN([SLEEP/WU_SET: B0 0x2D(5)])

Automatic SLEEP by high speed carrier checking mode

FAST_DET_MODE_EN([CCA_CTRL:B0 0x39(3)])

Force_TRX_OFF after PLL unlock detection during TX

PLL_LD_EN([PLL_LOCK_DETECT: B1 0x0B(7)])

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