Datasheet

73M1866B/73M1966B Data Sheet DS_1x66B_001

56 Rev. 1.6

Function

Mnemonic

Location

Type Description

TXDG 0x08[7:0] WO Transmitter Digital Gain

These bits control the value of the digital gain section of the

73M1x66B transmit path. Each bit indicates either a gain or

attenuation value. The net value of the gain setting is the linear sum

of each attributed value. Reading the TXDG register returns all

zeros, regardless of what was written to them.

TXDG –12dB

TXDG –6dB

TXDG +3.5dB

TXDG +2dB

TXDG +1dB

TXDG +0.5dB

TXDG +0.25dB

TXDG +0.125dB

Gain/Attenuate

0 0 0 0 0 0 0

0 0 dB (default)

1 0 0 0 0 0 0

0 -12 dB

0 1 0 0 0 0 0

0 -6 dB

0 0 1 0 0 0 0

0 +3.5 dB

0 0 0 1 0 0 0

0 +2 dB

0 0 0 0 1 0 0

0 +1 dB

0 0 0 0 0 1 0

0 +0.5 dB

0 0 0 0 0 0 1

0 +0.25 dB

0 0 0 0 0 0 0

1 +0.125 dB

Examples:

10000000 -12dB

00100000 +3.5dB

00010011 +2 + 0.25 + 0.125 =2.375dB

01001000 -6 + 1 = -5dB

TXEN 0x16[7] WO Transmit Path Enable

1 = Enable Transmit Path.

0 = Disable Transmit Path. (Default)