STW82102B datasheet(39/67 Pages) STMICROELECTRONICS

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STW82102B

I2C bus interface

Doc ID 018516 Rev 2

39/67

9.3.2

I2C register definitions

FUNCTIONAL_MODE

Functional mode register

Address:

0x00

Type:

Reset:

0x00

B_COUNTER

B counter register

Address:

0x01

Type:

Reset:

0x00

Description:

Most significant bits of the B counter value

654

3210

ALC_PD

PKD_EN

PD[4:0]

B11

WWW

[7] ALC_PD: for test purpose only must be set to ’0’. (ALC ON)

[6] PKD_EN: for test purpose only must be set to ’0’. (Peak detector output on pin 36 OFF)

[5:1] PD[4:0]: bits used to select different functional modes for the STW82102B according to

the following table

00000: (0 decimal) Power down mode

00001: (1 decimal) Standard Mode VCOA (VCOA and RX chain ON)

00010: (2 decimal) Standard Mode VCOB (VCOB and RX chain ON)

00011: (3 decimal). Diversity Slave Mode (ExtVCO/LO input buffer and RX Chain ON;

internal synthesizer OFF)

00100: (4 decimal) Diversity Master Mode VCOA (VCOA, RX Chain and LO output

buffer ON)

00101: (5 decimal) Diversity Master Mode VCOB (VCOB, RX Chain and LO output

buffer ON)

00110: (6 decimal) External LO Standard Mode (RX Chain ON, PLL and ExtVCO/LO

input buffer ON)

00111: (7 decimal) External LO Diversity Master Mode (RX Chain ON, PLL, ExtVCO/LO

input buffer and LO output buffer ON)

[0] B11: B counter value (bits B[10:0] in the B_COUNTER and A_COUNTER registers)

654

3210

B[10:3]

[7:0] B[10:3]: B counter value (bit B11 in the FUNCTIONAL_MODE register, bits B[2:0] in the

A_COUNTER register)

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