ML7344CE datasheet(115/154 Pages) LAPIS

115 / 154 page

FEDL7344C/E/J-05

ML7344C/E/J

115/154

(3) FIFO mode (65 byte or more)

The Host must write TX data to the TX_FIFO while checking INT[5] (group1: FIFO-Full interrupt) and

INT[4] (group1: FIFO-Empty interrupt) in order to avoid FIFO-Overrun or FIFO-Underrun. Other operations

are identical to the FIFO mode (less than 64byte). Enabling FAST_TX mode by FAST_TX_EN

([RF_STATUS_CTRL: B0 0x0A(5)] =0b1, TX will start when data amount written to the FIFO exceeds the

bytes+1 in the [TXFIFO_THRL: B0 0x18].

Yes

●If data written to FIFO exceed THFIFO_THRL[5:0]

([TXFIFO_THRL:B0 0x18(5-0)] +1, TX will start.

●Please refer to RF state transition wait flow.

FIFO-Empty (INT[4])?

[INT_SOURCE_GRP1: B0 0x0D(4)]

FAST_TX mode setting

[RF_STATUS_CTRL: B0 0x0A]

TX FIFO-Full level setting

[TXFIFO_THRH: B0 0x17]

TX FIFO-Empty level setting [TXFIFO_THRL: B0 0x18]

INT[4] clear

[INT_SOURCE_GRP: B0 0x0D]

.Total data amount should be identical

to the Length. Length data is (Length –

CRC size). If TX data written exceed

the Length, after TX completion

interrupt, TX FIFO must be cleared by

issuing TRX_OFF.

Yes

TX FIFO-Empty level

Disable setting

[TX_FIFO_THRL: B0 0x18]

TX FIFO-Empty level

Enable setting

[TX_FIFO_THRL: B0 0x18]

START

Write TX data

[WR_TX_FIFO:B0 0x7C]

Write TX data

[WR_TX_FIFO:B0 0x7C]

TX data request accept

completion (INT[17])?

[INT_SOURCE_GRP3: B0 0x0F(1)]

TX completion (INT[16])?

[INT_SOURCE_GRP3: B0 0x0F(0)]

INT[16] and INT[17] clear

[INT_SOURCE_GRP3: B0 0x0F])

Next packet TX ?

Yes

TRX_OFF issue

[RF_STATUS: B0 0x0B]

Write TX data

[WR_TX_FIFO:B0 0x7C]

RX?

RX_ON issue

[RF_STATUS: B0 0x0B]

Yes

Set RX_ON after TX completion?

[RF_STATUS_CTRL:B0 0x0A]

Yes

Set TRX_OFF/SLEEP after TX?

[RF_STATUS_CTRL:B0 0x0A]

Yes

To RF state transition wait

flow

To RF state transition wait flow

To RF state transition wait

and RX flow

ML7344CE Datasheet(PDF) 115 Page - LAPIS Semiconductor Co., Ltd.

ML7344CE Datasheet(HTML) 115 Page - LAPIS Semiconductor Co., Ltd.

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