ADC32RF52 datasheet(46/108 Pages) TI

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7.3.5.7.2 Fast frequency hopping using GPIO1/2, SEN and SDATA pins

2 pins for channel A and 2 for channel B?

This mode is enabled by setting the SPISEL to logic high and using the following register writes:

1. Set 0x234 to 0x63 (NCO SEL MODE = 3, GPIO MODE = 3)

Table 7-29. NCO Frequency Selection SPI Interface Registers

# OF BANDS

SDATA

SEN

GPIO2

GPIO1

SDATA

SEN

GPIO2

GPIO1

SINGLE

NCO2 CHA

[1]

NCO1 CHA [1:0]

NCO2 CHB

[1]

NCO1 CHB [1:0]

DUAL

NCO2 CHA [1:0]

NCO1 CHA [1:0]

NCO2 CHB [1:0]

NCO1 CHB [1:0]

QUAD

NCO4 CHA [1:0]

NCO3 CHA [1:0]

NCO2 CHA [1:0]

NCO1 CHA [1:0]

NCO4 CHB [1:0]

NCO3 CHB [1:0]

NCO2 CHB [1:0]

NCO1 CHB [1:0]

7.3.5.7.3 Fast frequency hopping using the fast SPI

In this mode the GPIO1/2 pins are used as a "fast SPI" input which only updates the NCO selection registers. No

This mode is enabled by setting the SPISEL to logic high and using the following register write:

1. Set 0x234 to 0x43 (NCO SEL MODE = 2, GPIO MODE = 3)

The NCO frequencies are selected as shown in Table 7-30.

Table 7-30. NCO Frequency Programming using FAST SPI

# OF

BANDS

D15

D14

D13

D12

D11

D10

SINGLE

NCO1

CHB

[2]

NCO1 CHB

[1:0]

NCO1

CHA

[2]

NCO1 CHA

[1:0]

DUAL

NCO2 CHB

[1:0]

NCO1 CHB

[1:0]

NCO2 CHA

[1:0]

NCO1 CHA

[1:0]

QUAD

NCO4 CHB

[1:0]

NCO3 CHB

[1:0]

NCO2 CHB

[1:0]

NCO1 CHB

[1:0]

NCO4 CHA

[1:0]

NCO3 CHA

[1:0]

NCO2 CHA

[1:0]

NCO1 CHA

[1:0]

ADC32RF52

SBASAI6 – SEPTEMBER 2023

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