ADMV1455BBCZ-R7 datasheet(108/141 Pages) AD

108 / 141 page

Data Sheet

ADMV1455

analog.com

Rev. 0 | 108 of 141

Table 71. Bit Descriptions for REG0194 (Continued)

Bits

Bit Name

Description

Reset

Access

BB_I_GAIN_SEL

BB I Amplifier Gain Select. Use high gain for 50Ω differential impedance and low gain for 100Ω differential

impedance implementations.

0x1

R/W

0: Low Gain.

1: High Gain.

Address: 0x200, Reset: 0x01, Name: REG0200

Figure 222.

Table 72. Bit Descriptions for REG0200

Bits

Bit Name

Description

Reset

Access

[7:0]

FILTER_SM_STEP

Filter State Machine Step Size. This twos complement value determines how much the filter state machine is

incremented or decremented. A step size of zero is invalid.

0x1

R/W

Address: 0x202, Reset: 0x01, Name: REG0202

Figure 223.

Table 73. Bit Descriptions for REG0202

Bits

Bit Name

Description

Reset

Access

[7:1]

RESERVED

Reserved.

0x0

FILTER_LUT_EN

Filter LUT Enable. When disabled, filter settings defined using Register 0x800 to Register 0x80C. When enabled,

filter settings are dependent upon the LUT, that is set using Register 0x900 to Register 0xC3F.

0x1

R/W

0: Disable.

1: Enable.

Address: 0x203, Reset: 0x00, Name: REG0203

Figure 224.

Table 74. Bit Descriptions for REG0203

Bits

Bit Name

Description

Reset

Access

[7:2]

RESERVED

Reserved.

0x0

[1:0]

FILTER_LUT_MODE

Filter LUT Mode.

0x0

R/W

00: LUT pointer selected by using the ADD_F balls.

01: LUT pointer selected by using Register 0x209 (FILTER_SPI_POINTER).

10: LUT pointer is incremented or decremented on rising edge of ADD_F4.

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