User Guide

Signal From To Parameter Min Typ Max Unit Function
RFBUSCL
K
RAP RFIC Logic high
"1"
1.38 1.88 V
Serial bus
for RFIC
control
RFBusClk SCLK Logic low
"0"
0 0.4 V
Load
resistance
10 KW
Load
capacitanc
e
20 pF
Frequency 19.2 MHz
RFBUSDA
T
RAP RFIC See RFBusClk for parameters
RFBusDa SDATA
RFBUSEN
A
RAP RFIC See RFBusClk for parameters
RFBusEn1X XENA
Table 16 Analog signals
Signal From To Parameter Min Typ Max Unit Function
AFC EM ASIC
(N2200
)
VCTCX
O
Voltage min 0 0.1 V Automatic
frequency
control
voltage for
VCTCXO
AFC VC max 2.3 2.35 V
Load
resistance
22 KW RC Low
pass filter
Load
capacitance
10 nF
Resolution 11 bits
RFCLKP RFIC RAP Frequency 38.4 MHz Reference
clock for
base band
REFP RFclkP Differential
amplitude
0.5 0.8 1.6 Vpp
Duty cycle -13 13 %
Load
resistance
10 KW
Load
capacitance
20 pF
RFCLKN REFN RFclk
N
See RFClkP 180° phase
sift to
RFClkP
RM-170; RM-171
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