STW82103B datasheet(42/67 Pages) STMICROELECTRONICS

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I2C bus interface

STW82103B

42/67

Doc ID 018517 Rev 2

MUTE_&_CALIBRATION

Mute and calibration control register

Address:

0x05

Type:

Reset:

0x00

Description:

For test purposes only

DAC_CONTROL

DAC control register

Address:

0x06

Type:

Reset:

0x00

Description:

Most significant bits of the DAC control word

654

3210

WWWW

[7] CALTYPE: Calibration algorithm selection

0: standard calibration to optimize the phase noise versus temperature

1: enhanced calibration to maximize the

ΔTLK range

[6] SERCAL:

1: starts the VCO auto-calibration (automatically reset to ’0’ at the end of calibration)

[5] SELEXTCAL: test purpose only; must be set to ‘0’

[4] MUTE_EN:

0: mute function disabled

1: mute function enabled

[3] MUTE_TYPE: must be set to '1' while the mute function is enabled (mute the IF output

on Unlock state)

[2] MUTE_LOOUT_EN:

To be set to ’1’ to mute the LO output buffer

[1] MUTE_MIX_EN:

To be set to ’1’ mute the Mixer circuitry

[0] MUTE_IFAMP_EN: To be set to '1' to mute the IF amplifier circuitry

654

3210

DAC[9:2]

[7:0] DAC[9:2]: DAC input word for DAC current control (bits DAC[1:0] in the

MIXER_CONTROL register).

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