ATA5423_06 ATMEL [ATMEL Corporation], ATA5423_06 Datasheet - Page 28

• Manufacturer Part Number: ATA5423_06
• Description: UHF ASK/FSK Transceiver
• Manufacturer: ATMEL [ATMEL Corporation]

Table 4-1.
28
Frequency
433.92
(MHz)
868.3
315
345
915
ATA5423/25/28/29
Calculation of f
433_N868
AVCC
AVCC
AVCC
Pin 6
GND
GND
The variable FREQ depends on FREQ2 and FREQ3, which are defined by the bits FR0 to FR12
in control register 2 and 3, and is calculated as follows:
RF
CREG1
Bit(4)
FS
1
0
0
0
0
f
XTO
12.73193
13.94447
13.25311
13.41191
14.13324
(MHz)
f
f
f
f
f
XTO
XTO
XTO
XTO
XTO
×
×
×
×
×
⎛
⎝
⎛
⎝
⎛
⎝
⎛
⎝
⎛
⎝
f
RF
24.5
24.5
32.5
64.5
64.5
= f
+
+
+
+
+
TX_ASK
FREQ
--------------------------------- -
FREQ
--------------------------------- -
FREQ
--------------------------------- -
FREQ
--------------------------------- -
FREQ
--------------------------------- -
16384
16384
16384
16384
16384
= f
+
+
+
+
+
RX
20.5
20.5
20.5
20.5
20.5
⎞
⎠
⎞
⎠
⎞
⎠
⎞
⎠
⎞
⎠
f
f
f
f
f
RF
RF
RF
RF
RF
f
TX_FSK_L
–
–
–
–
–
15.54 k
Hz
17.02 k
Hz
16.17 k
Hz
16.37 k
Hz
17.25 k
Hz
15.54 kHz
17.02 kHz
16.17 kHz
16.37 kHz
17.25 kHz
f
TX_FSK_H
f
f
f
f
f
RF
RF
RF
RF
RF
+
+
+
+
+
4841C–WIRE–05/06
Resolution
Frequency
777.1 Hz
851.1 Hz
808.9 Hz
818.6 Hz
862.6 Hz