CC2430-RTR1-F64Z datasheet(171/234 Pages) TI

171 / 234 page

CC2430

CC2430 PRELIMINARY Data Sheet (rev. 1.03) SWRS036A

Page 171 of 232

signaled to the CPU by asserting the

RFERR

interrupt

when

enabled.

addition

the

radio

will

set

RFSTATUS.FIFO

bit

low

while

the

RFSTATUS.FIFOP bit is high. Data

already in the RXFIFO will not be affected

by the overflow, i.e. frames already

received may be read out.

A SFLUSHRX command strobe is required

after a RXFIFO overflow to enable

reception of new data. Note that the

SFLUSHRX command strobe should be

issued

twice

ensure

that

the

RFSTATUS.SFD bit goes back to its idle

state.

Preamble

SFD Length

Data received over RF

SFD

FIFO

FIFOP , if threshold

higher than frame length

FIFOP , if threshold

lower than frame length

cte

ive

Preamble

SFD Length

Data received over RF

SFD

FIFO

FIFOP

s r

nit

ion

ple

MAC Protocol Data Unit (MPDU) with correct address

MAC Protocol Data Unit (MPDU) with wrong address

Address

recognition OK

Address

recognition fails

Figure 41: SFD, FIFO and FIFOP activity examples during receive

PSDU0

PSDU1

RXFIFO

read data

Length

PSDU5

PSDU2

PSDU3

RSSI

FIFOP

FIFO

PSDU4

FCS/Corr

Figure 42: Example of status activity when reading RXFIFO.

14.9 Transmit mode

During transmit, the RFSTATUS.FIFO and

RFSTATUS.FIFOP bits are still only

the

RXFIFO.

The

RFSTATUS.SFD bit is however active

during transmission of a data frame, as

shown in

CC2430-RTR1-F64Z 데이터시트(PDF) 171 Page - Texas Instruments

CC2430-RTR1-F64Z 데이터시트(HTML) 171 Page - Texas Instruments

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