参数资料
型号: AT86RF401E
厂商: ATMEL CORP
元件分类: 通信及网络
英文描述: Smart RF Wireless Data Microtransmitter
中文描述: SPECIALTY TELECOM CIRCUIT, PDSO20
封装: 4.40 X 6.50 MM, 0.65 MM PITCH, TSSOP-20
文件页数: 31/52页
文件大小: 479K
代理商: AT86RF401E
31
AT86RF401
1424F
RKE
12/03
Bits[5:3]: PCC, Power Control (coarse)
Attenuates the output power in 6 dB steps.
Table 10.
Coarse Power Control Definition
Bits[2:0]: PCF, Power Control (fine)
Attenuates the output power in 1 dB steps.
Table 11.
Fine Power Control Definition
VCO Tuning Register 6
VCOTUNE
Note:
* These values are unknown at initial startup.
Bits[4:0]: VCO Tuning Capacitor Array
This device requires the use of an external inductor to tune the VCO. Tolerance of the
inductor, coupled with process variation of the device, can lead to variations in the tun-
ing point of the VCO. A switched array of tuning capacitors has been added internally to
the device in order to
fine tune
the VCO. This capacitance is switched across pins 3
and 4 (L1 and L2) of the device. The capacitor array is set by VCOTUNE[4:0] and is
comprised of the following switched capacitance levels:
PCC[5:3]
Output Attenuation
000
0 dB
001
6 dB
010
12 dB
011
18 dB
100
24 dB
101
30 dB
110
Invalid
111
Invalid
PCF[2:0]
Output Attenuation
000
0 dB
001
1 dB
010
2 dB
011
3 dB
100
4 dB
101
5 dB
110
Invalid
111
Invalid
Bit
7
6
5
4
3
2
1
0
$16
VCOVDET[1]
VCOVDET[0]
VCOTUNE[4]
VCOTUNE[3]
VCOTUNE[2]
VCOTUNE[1]
VCOTUNE[0]
Read/Write
R
R
R/W
R/W
R/W
R/W
R/W
R/W
Initial Value
*
*
0
0
0
0
0
0
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