RF31 Hope Microelectronics co., Ltd, RF31 Datasheet - Page 113

• Manufacturer Part Number: RF31
• Description: Rf31 Ism Receiver
• Manufacturer: Hope Microelectronics co., Ltd

The total settling time (cold start) of the PLL after the calibration can be calculated as T
Register 53h. PLL Tune Time
Reset value = 01010010
Register 54h. PA Boost
Reset value = 01010100
Invalid preamble will be evaluated during this period: (invalid_preamble_Threshold x 4) x Bit Rate period.
Name
Type
Bit
Name
Type
Bit
7:3
2:0
7:6
5:2
Bit
Bit
1
0
Tel: [phone]
D7
pa_vbias_boost
inv_pre_th[5:2]
Reserved[7:6]
ldo_pa_boost
D7
Reserved[7:6]
pllts[4:0]
Name
Name
pllt0
R/
w
D6
D6
PLL Soft Settling Time (T
This register will set the settling time for the PLL from a previous locked
frequency in Tune mode. The value is configurable between 0 μs and 310 μs,
in 10 μs intervals. The default plltime corresponds to 100 μs. See formula
above.
PLL Settling Time (T
This register will set the time allowed for PLL settling after the calibrations are
completed. The value is configurable between 0 μs and 70 μs, in 10 μs steps.
The default pllt0 corresponds to 20 μs. See formula above.
Reserved.
Invalid Preamble Threshold.
LDO PA Boost.
PA VBIAS Boost.
Fax: [phone]
D5
pllts[4:0]
R/
D5
w
D4
inv_pre_th
D4
R/
O
).
w
E-mail: [e-mail]
S
D3
).
D3
Function
Function
D2
D2
ldo_pa_boost
http://www.hoperf.com
R/
D1
CS
w
= T
pllt0
D1
R/
R F 3 1
S
w
+ T
pa_vbias_boost
O
.
D0
R/
D0
w
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