ATR2406 Datasheet, PDF (9/20 Pages) ATMEL Corporation – LOW IF .4 GHZ ISM TRANSCEIVER

ATR2406 [Preliminary]
The following table shows the LO frequencies for RX and TX in the 2.4 GHz ISM band. There are 95 channels available.
Since the ATR2406 supports wideband modulation with 400 kHz deviation, every second channel can be used without
overlap in the spectrum.
Table 1. LO Frequencies
Mode
f_IF/kHz
TX
RX
864
Channel
C0
C1
...
C93
C94
C0
C1
...
C93
C94
f_ANT/MHz
2401.056
2401.920
...
2481.408
2482.272
2401.056
2401.920
...
2481.408
2482.272
f_VCO/MHz
S_MC
2401.056
86
2401.920
86
...
...
2481.408
89
2482.272
89
2401.920
86
2402.784
86
...
...
2482.272
89
2483.136
89
TX Register Setting
The following 16-bit word has to be programmed for TX.
S_SC
N
27
2779
28
2780
...
...
24
2872
25
2873
28
2780
29
2781
...
...
25
2873
26
2874
MSB
LSB
Data bits
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2 D1
D0
0
1
PA
GFCS
1
RC
MC
SC
Note: D12 and D13 are only relevant if ramping generator in conjunction with external PA is used, otherwise it can be programmed 0
or 1.
Table 2. Output Power Settings with Bits D12 - D13
PA (Output Power Settings)
D13
D12
0
0
0
1
1
0
1
1
RAMP_OUT (Pin 21)
1.3 V
1.35 V
1.4 V
1.75 V
9
4779F–ISM–09/04