CC1010-RTR1 datasheet(116/152 Pages) TI

116 / 152 page

CC1010

SWRS047

Page 116 of 152

Write CAL.CAL_START=0

End of calibration

Wait for maximum 26 ms, or

Read CAL and wait until

CAL.CAL_COMPLETE=1

Start single calibration

RX frequency register A is calibrated first

Write RFMAIN:

RXTX = 0; F_REG = 0; RX_PD = 0; TX_PD = 1;

FS_PD = 0; CORE_PD=0; BIAS_PD=0;

Write FREQ_A, FREQ_B

Write CAL.CAL_DUAL = 0

Frequency register A is used for

RX mode, register B for TX

Write CAL.CAL_START=1

Calibration is performed in RX mode,

Result is stored in TEST0 and TEST2,

RX register

Write CURRENT.VCO_CURRENT = RX current

Write PLL.REFDIV = RX reference divider

Write TEST6=0x1B

‘RX current’ is the VCO current to

be used in RX mode

Write CAL.CAL_START=0

Wait for 26 ms, or

Read CAL and wait until

CAL.CAL_COMPLETE=1

TX frequency register B is calibrated second

Write RFMAIN:

RXTX = 1; F_REG = 1

RX_PD = 1; TX_PD = 0; FS_PD = 0

CORE_PD = 0; BIAS_PD = 0; RESET_N=1

Write CAL.CAL_START=1

Calibration is performed in TX mode,

Result is stored in TEST0 and TEST2,

TX registers

Write CURRENT.VCO_CURRENT = TX current

Write PLL.REFDIV = TX reference divider

Write TEST6 = 0x3B

Write PA_POW = 0x00

‘TX current’ is the VCO current to be

used in TX mode

PA is turned off to prevent spurious

emission

Calibration time depends on the reference

frequency, see text.

Write CAL.CAL_START=0

End of calibration

Wait for maximum 26 ms, or

Read CAL and wait until

CAL.CAL_COMPLETE=1

Start single calibration

RX frequency register A is calibrated first

Write RFMAIN:

RXTX = 0; F_REG = 0; RX_PD = 0; TX_PD = 1;

FS_PD = 0; CORE_PD=0; BIAS_PD=0;

Write FREQ_A, FREQ_B

Write CAL.CAL_DUAL = 0

Frequency register A is used for

RX mode, register B for TX

Write CAL.CAL_START=1

Calibration is performed in RX mode,

Result is stored in TEST0 and TEST2,

RX register

Write CURRENT.VCO_CURRENT = RX current

Write PLL.REFDIV = RX reference divider

Write TEST6=0x1B

‘RX current’ is the VCO current to

be used in RX mode

Write CAL.CAL_START=0

Wait for 26 ms, or

Read CAL and wait until

CAL.CAL_COMPLETE=1

TX frequency register B is calibrated second

Write RFMAIN:

RXTX = 1; F_REG = 1

RX_PD = 1; TX_PD = 0; FS_PD = 0

CORE_PD = 0; BIAS_PD = 0; RESET_N=1

Write CAL.CAL_START=1

Calibration is performed in TX mode,

Result is stored in TEST0 and TEST2,

TX registers

Write CURRENT.VCO_CURRENT = TX current

Write PLL.REFDIV = TX reference divider

Write TEST6 = 0x3B

Write PA_POW = 0x00

‘TX current’ is the VCO current to be

used in TX mode

PA is turned off to prevent spurious

emission

Calibration time depends on the reference

frequency, see text.

Figure 34. Single calibration algorithm for RX and TX

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