cef830g Hope Microelectronics co., Ltd, cef830g Datasheet - Page 87

• Manufacturer Part Number: cef830g
• Description: Rf42/43 Ism Transmitter
• Manufacturer: Hope Microelectronics co., Ltd

Register 55h. Calibration Control
Reset value = x1x00100
Name
Type
Bit
Bit
7
6
5
4
3
2
1
0
Tel: [phone]
Reserved
D7
xtalstarthalf
R
Reserved
Reserved
vcocaldp
enrcfcal
skipvco
Name
vcocal
rccal
xtalstarthalf
R/
D6
w
Reserved.
If Set, the Xtal Wake Time Period is Halved.
Reserved.
RC Oscillator Fine Calibration Enable.
If this bit is set to 1 then the RC oscillator performs fine calibration in every app. 30 s.
RC Calibration Force.
If setting rccal = 1 will automatically perform a forced calibration of the 32 kHz RC
Oscillator. The RC OSC will automatically be calibrated if the Wake-Up-Timer is
enabled. The calibration takes 2 ms. The 32 kHz RC oscillator must be enabled to
perform a calibration. Setting this signal from a 0 to 1 will initiate the calibration. This bit
is cleared automatically.
VCO Calibration Double Precision Enable.
When this bit is set to 1 then the VCO calibration measures longer thus
calibrates more precisely.
VCO Calibration Force.
If in Idle Mode and pllon = 1, setting vcocal = 1 will force a one time calibration
of the synthesizer VCO. This bit is cleared automatically.
Skip VCO Calibration.
Setting skipvco = 1 will skip the VCO calibration when going from the Idle state
to the TX state.
Fax: [phone]
Reserved
R
D5
enrcfcal
R/
D4
w
E-mail: [e-mail]
rccal
Function
D3
R/
w
vcocaldp
D2
R/
R F 4 2 / 4 3
w
http://www.hoperf.com
vcocal
R/
D1
w
skipvco
D0
R/
w
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