XE1203F データシートの表示（PDF） - Semtech Corporation
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XE1203F Datasheet PDF : 36 Pages
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XE1203F
RTParam_Rssi
/en
rssi_out
TS_RSSI
xxx
val1
TS_RSSIM
val2
val3
val4
val5 0
saout_rssi
dataout_rssi
xxx
val1
val4
Figure 5: RSSI measurement timing diagram
Note on the Dataout_RSSI update: during a read sequence of the Dataout_RSSI Status Register, the Saout_rssi
signal is generated internally as illustrated in the Figure 6 below. It can be seen the value of the Dataout_RSSI
Status Register is updated upon transmission of the bit A0 on the SI line. The maximum frequency of SCK during
the read operation of the RSSI value is 100 kHz.
SI
EN
SO
HZ
SCK
saout_rssi
A(4) A(3) A(2) A(1) A(0)
D(7) D(6) D(5) D(4) D(3) D(2) D(1) D(0)
HZ
Figure 6: Generation of saout_rssi
© Semtech 2007
www.semtech.com
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