Data Sheet

ADF5902

Rev. 0 | Page 17 of 39

DB31 DB30 DB29 DB28 DB27 DB26 DB25 DB24 DB23 DB22 DB21 DB20 DB19 DB18 DB17 DB16 DB15 DB14 DB13 DB12 DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2

DB1

DB0

1

1

11

1

1

11

CONTROL

BITS

1

1

1

1

0

1

1

1

1

1

1

C4(0) C3(0) C2(0) C1(1)

Tx AMP CAL REF CODE

C5(0)

TAR7 TAR6 TAR5 TAR4 TAR3 TAR2 TAR1 TAR0

TAR7 TAR6

.......... TAR1 TAR0

0

0

..........

0

0

0

0

0

..........

0

1

1

0

0

..........

1

0

2

0

0

..........

1

1

3

.

.

..........

.

.

.

.

.

..........

.

.

.

.

.

..........

.

.

.

1

1

..........

0

0

252

1

1

..........

0

1

253

1

1

..........

1

0

254

1

1

.........

1

1

255

Tx AMP CAL REF CODE

RESERVED

Figure 25. Register 1 (R1)

REGISTER 1

Control Bits

With Bits[C5:C1] set to 00001, Register R1 is programmed.

Figure 25 shows the input data format for programming this

register.

Reserved

Bits[DB31:DB13] are reserved and must be set as shown in

Figure 25.

Transmitter Amplitude Calibration Reference Code

Bits[DB12:DB5] set the transmitter amplitude calibration

reference code for the two transmitter outputs during

calibration. Calibrate the output power on the transmitter

outputs from −20 dBm to 8 dBm by setting the transmitter

amplitude calibration reference code (see Figure 7).

Bits[DB12:DB5] are shown as Tx AMP CAL REF CODE

in Figure 25.