Texas Instruments AFE79 Series User Manual

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129
SBAU337–May 2020
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Macro
1. Floating Point mode
2. Coarse Gain on LSBs of only I or only Q
3. Coarse Gain on LSBs of I and Q together
4. Coarse Gain sent on the ALC pins
1.2.5.18 ALC Floating Point Configuration Macro
Table 1-78.
Macro ALC Floating Point Configuration Macro
Opcode 0x6A
Operand Offset Length Value Functionality Results
1 0x00 1 RX Channel Select Bit 0: 1 → Value
specified in
subsequent
operands is valid for
1RX.
Bit 1: 1 → Value
specified in
subsequent
operands is valid for
2RX.
Bit 2: 1 → Value
specified in
subsequent
operands is valid for
3RX.
Bit 3: 1 → Value
specified in
subsequent
operands is valid for
4RX.
Bit 4 → RESERVED
Bit 5 → RESERVED
2 0x01 1 Floating Point Mode
3 0x02 1 Floating Point
Format
Memory Not used
Floating Point Mode: Floating Point Mode - two modes:
1. 0x00 → If exponent > 0, do not send MSB
2. 0x01 → Send MSB always
Floating Point Format: 3 options exist for the floating point format:
1. 0x00 → 2-bit exponent, 13-bit mantissa and 1-bit sign
2. 0x01 → 3-bit exponent, 12-bit mantissa and 1-bit sign
3. 0x02 → 4-bit exponent, 11-bit mantissa and 1-bit sign
1.2.5.19 ALC Coarse Fine Mode Macro
Table 1-79.
Macro ALC Coarse Fine Mode
Opcode 0x6B
Operand Offset Length Value Functionality Results

Texas Instruments AFE79 Series Specifications

General

Brand	Texas Instruments
Model	AFE79 Series
Category	Control Unit
Language	English