AFE030 datasheet(37/58 Pages) TI1

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AFE030

www.ti.com

SBOS588A

– DECEMBER 2011 – REVISED DECEMBER 2011

Table 10. Gain Select Register: Address 02h

Default: 32h

Gain Select Register

<7:0>

LOCATION

BIT NAME

(0 = LSB)

DEFAULT

R/W

FUNCTION

This bit is used to set the gain of the Rx PGA1.

00 = 0.25 V/V

RX1G-0,

0, 1

R/W

01 = 0.5 V/V

RX1G-1

10 = 1 V/V

11 = 2 V/V

This bit is used to set the gain of the Rx PGA2.

00 = 1 V/V

RX2G-0,

2, 3

0, 0

R/W

01 = 4 V/V

RX2G-1

10 = 16 V/V

11 = 64 V/V

This bit is used to set the gain of the Tx PGA.

00 = 0.25 V/V

TXG-0,

4, 5

1, 1

R/W

01 = 0.5 V/V

TXG-1

10 = 0.707 V/V

11 = 1 V/V

—

Reserved

—

Reserved

Table 11. Enable2 Register: Address 03h

Default: 00h

Enable2 Register

<7:0>

LOCATION

BIT NAME

(0 = LSB)

DEFAULT

R/W

FUNCTION

This bit is used to enable/disable the ZC block.

R/W

0 = Disabled

1 = Enabled

This bit is used to enable/disable the REF1 block.

REF1

R/W

0 = Disabled

1 = Enabled

This bit is used to enable/disable the REF2 block.

REF2

R/W

0 = Disabled

1 = Enabled

This bit is used to enable/disable the PA output stage.

When the PA output stage is enabled it functions normally with a

low output impedance, capable of driving heavy loads.

PA_OUT

R/W

When the PA output stage is disabled it is placed into a high

impedance state.

0 = Disabled

1 = Enabled

—

Reserved

—

Reserved

—

Reserved

—

Reserved

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