MPC5775E/MPC5775B eQADC vector table entry clarification?

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MPC5775E/MPC5775B eQADC vector table entry clarification?

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iansmusical
Contributor V

Hello Everyone,

Looking at the MPC5775E reference manual (Rev 1 May 2018) which also covers the MPC5775B, there is a features table that shows the ADC Quantity as 4 on the MPC5775E and 2 on the MPC5775B. However, the interrupt vector assignments table shows eQADC_A 0 to 5 and eQADC_B 0 to 5. Does anyone know what the respective vector table entries for the eQADC_x on each device is please? Clearly there is a mismatch somewhere.

Thank you,

Ian

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PetrS
NXP TechSupport
NXP TechSupport

Hi,

MPC5775E contains 2 ADC modules (EQADC_A and EQADC_B) and each module has 2 converter cores: ADC0 and ADC1. That's why this MCU has 4 ADC quantities.

MPC5775B has just single ADC module EQADC_A, i.e 2 ADC quantities as stated in feature table.

Each ADC module has 6 CFIFOs and 6 RFIFOs and therefore you see so many interrupts vectors, to cover each FIFOx.

BR, Petr 

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PetrS
NXP TechSupport
NXP TechSupport

Hi,

MPC5775E contains 2 ADC modules (EQADC_A and EQADC_B) and each module has 2 converter cores: ADC0 and ADC1. That's why this MCU has 4 ADC quantities.

MPC5775B has just single ADC module EQADC_A, i.e 2 ADC quantities as stated in feature table.

Each ADC module has 6 CFIFOs and 6 RFIFOs and therefore you see so many interrupts vectors, to cover each FIFOx.

BR, Petr 

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iansmusical
Contributor V

Hello Petr,

Many thanks for your support.

Regards,

Ian

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