ADL6331ACCZA-R7 datasheet(30/54 Pages) AD

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Data Sheet

ADL6331

PROGRAMMABILITY GUIDE

analog.com

Rev. B | 30 of 54

RF PATH PRECONFIGURATION

ADL6331 has four preconfigurable RF gain settings that are se-

lected with the ATTSEL0 and ATTSEL1 pins. The configurable

parameters (Fixed gain or Bypass attenuation mode in AMP1 and

AMP2, and DSA attenuation level) are stored in 4-register spaces

(Table 11, Table 12, Table 13, Table 14, Table 15), which are called

RF State A, State B, State C, and State D.

►

State A: SIG_PATH0_2 in Register 0x10A

►

State B: SIG_PATH1_2 in Register 0x10B

►

State C: SIG_PATH2_2 in Register 0x10C

►

State D: SIG_PATH3_2 in Register 0x10D

Each mode can configure the full RF chain after reset is asserted.

Default settings for each mode are shown in Table 11. Users can

overwrite the parameters before or during operation.

This feature allows the users to switch the RF performance rapidly

using asynchronous external control.

Table 11. Four Preconfiguration Registers with Default and Reset RF Parameters

State

ATTSEL1

(Pin 6)

ATTSEL0

(Pin 13)

Address

Name

Bits

Bit 7

Bit 6

Bits[5:0], DSA Setting 0 dB to 24.0 dB at 1.0 dB

Step

AMP2 Setting:

Bypass

attenuation/

Fixed Gain

AMP1 Setting:

Bypass

attenuation/

Fixed Gain

0x10A

SIG_PATH0

[7:0]

Default = bypass

attenuation

Default = bypass

attenuation

Default = 24.0 dB attenuation

0x10B

SIG_PATH1

[7:0]

Default = fixed

gain

Default = fixed

gain

Default = 16.0 dB attenuation

0x10C

SIG_PATH2

[7:0]

Default = fixed

gain

Default = fixed

gain

Default = 8.0 dB attenuation

0x10D

SIG_PATH3

[7:0]

Default = fixed

gain

Default = fixed

gain

Default = 0.0 dB attenuation

Table 12. Register 0x10A: State A

Bits

Bit Name

Description

Reset

Access

AMP2_BYPASS0

Amplifier 2 bypass State A setting

0x1

R/W

0: Fixed gain mode

1: Bypass attenuation mode

AMP1_BYPASS0

Amplifier 1 bypass State A setting

0x1

R/W

0: Fixed gain mode

1: Bypass attenuation mode

[5:0]

DSA_ATTN0

DSA attenuator State A setting

0x18

R/W

0: 0 dB

1: 1 dB

2: 2 dB

...

24: 24 dB

Table 13. Register 0x10B: State B

Bits

Bit Name

Description

Reset

Access

AMP2_BYPASS1

Amplifier 2 bypass State B setting

0x0

R/W

0: Fixed gain mode

1: Bypass attenuation mode

AMP1_BYPASS1

Amplifier 1 bypass State B setting

0x0

R/W

0: Fixed gain mode

1: Bypass attenuation mode

[5:0]

DSA_ATTN1

DSA attenuator State B setting

0x10

R/W

0: 0 dB

1: 1 dB

...

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