ATR2406_14 Datasheet, PDF (13/26 Pages) ATMEL Corporation – Low-IF 2.4-GHz ISM Transceiver

Table 8-5. PLL Settings of the Swallow Counter Bits D0 to D4
SC (Swallow Counter)
D4
D3
D2
D1
D0
S_SC
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
1
0
2
...
...
...
...
...
...
1
1
1
0
1
29
1
1
1
1
0
30
1
1
1
1
1
31
8.6 GFCS Adjustment
The Gaussian filter control setting (GFCS) is used to compensate for production tolerances by tuning the modulation
deviation in production to the nominal value of 400kHz. These bits are only relevant in TX mode.
Table 8-6. GFCS Adjustment of Bits D9 - D11
GFCS
D11
D10
D9
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
GFCS
60%
70%
80%
90%
100%
110%
120%
130%
8.7 Control Signals
The various transceiver functions are activated by the following control signals. A timing proposal is shown in Figure 8-3 on
page 15.
Table 8-7. Control Signals and Functions
Signal
PU_REG
PU_TRX
RX_ON
TX_ON
NOLE
Functions
Activates AUX voltage regulator and the VCO voltage regulator supplying the complete
transceiver
Activates RX/TX blocks
Activates RX circuits: DEMOD, IF AMP, IR MIXER
Activates TX circuits: PA, RAMP GEN, Starts RAMP SIGNAL at RAMP_OUT
Disables open loop mode of the PLL
ATR2406 [DATASHEET]
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4779Q–ISM–09/14