5.8 Analog Front-End (AFE)
(Ask a Question)| Name | Type | Description | Associated With | |
|---|---|---|---|---|
| ADC/SDD | SCB | |||
| ABPS0 | In | SCB 0 / active bipolar prescaler input 1. See the Active Bipolar Prescaler (ABPS) section in the SmartFusion Programmable Analog User’s Guide. |
ADC0 | SCB0 |
| ABPS1 | In | SCB 0 / active bipolar prescaler Input 2 | ADC0 | SCB0 |
| ABPS2 | In | SCB 1 / active bipolar prescaler Input 1 | ADC0 | SCB1 |
| ABPS3 | In | SCB 1 / active bipolar prescaler Input 2 | ADC0 | SCB1 |
| ABPS4 | In | SCB 2 / active bipolar prescaler Input 1 | ADC1 | SCB2 |
| ABPS5 | In | SCB 2 / active bipolar prescaler Input 2 | ADC1 | SCB2 |
| ABPS6 | In | SCB 3 / active bipolar prescaler Input 1 | ADC1 | SCB3 |
| ABPS7 | In | SCB 3 / active bipolar prescaler input 2 | ADC1 | SCB3 |
| ABPS8 | In | SCB 4 / active bipolar prescaler input 1 | ADC2 | SCB4 |
| ABPS9 | In | SCB 4 / active bipolar prescaler input 2 | ADC2 | SCB4 |
| ADC0 | In | ADC 0 direct input 0 / FPGA Input. See the “Sigma-Delta Digital-to-Analog Converter (DAC)” section in the SmartFusion Programmable Analog User’s Guide. |
ADC0 | SCB0 |
| ADC1 | In | ADC 0 direct input 1 / FPGA input | ADC0 | SCB0 |
| ADC2 | In | ADC 0 direct input 2 / FPGA input | ADC0 | SCB1 |
| ADC3 | In | ADC 0 direct input 3 / FPGA input | ADC0 | SCB1 |
| ADC4 | In | ADC 1 direct input 0 / FPGA input | ADC1 | SCB2 |
| ADC5 | In | ADC 1 direct input 1 / FPGA input | ADC1 | SCB2 |
| ADC6 | In | ADC 1 direct input 2 / FPGA input | ADC1 | SCB3 |
| ADC7 | In | ADC 1 direct input 3 / FPGA input | ADC1 | SCB3 |
| ADC8 | In | ADC 2 direct input 0 / FPGA input | ADC2 | SCB4 |
| ADC9 | In | ADC 2 direct input 1 / FPGA input | ADC2 | SCB4 |
| ADC10 | In | ADC 2 direct input 2 / FPGA input | ADC2 | N/A |
| ADC11 | In | ADC 2 direct input 3 / FPGA input | ADC2 | N/A |
| CM0 | In | SCB 0 / high side of current monitor /
comparator Positive input. See the Current Monitor section in the SmartFusion Programmable Analog User’s Guide. |
ADC0 | SCB0 |
| CM1 | In | SCB 1 / high side of current monitor / comparator. Positive input. | ADC0 | SCB1 |
| CM2 | In | SCB 2 / high side of current monitor / comparator. Positive input. | ADC1 | SCB2 |
| CM3 | In | SCB 3 / high side of current monitor / comparator. Positive input. | ADC1 | SCB3 |
| CM4 | In | SCB 4 / high side of current monitor / comparator. Positive input. | ADC2 | SCB4 |
| TM0 | In | SCB 0 / low side of current monitor / comparator Negative input / high side of temperature monitor. See the Temperature Monitor section. |
ADC0 | SCB0 |
| TM1 | In | SCB 1 / low side of current monitor / comparator. Negative input / high side of temperature monitor. | ADC0 | SCB1 |
| TM2 | In | SCB 2 / low side of current monitor / comparator. Negative input / high side of temperature monitor. | ADC1 | SCB2 |
| TM3 | In | SCB 3 low side of current monitor / comparator. Negative input / high side of temperature monitor. | ADC1 | SCB3 |
| TM4 | In | SCB 4 low side of current monitor / comparator. Negative input / high side of temperature monitor. | ADC2 | SCB4 |
| SDD0 | Out | Output of SDD0 See the Sigma-Delta Digital-to-Analog Converter (DAC) section in the SmartFusion Programmable Analog User’s Guide. |
SDD0 | N/A |
| SDD1 | Out | Output of SDD1 | SDD1 | N/A |
| SDD2 | Out | Output of SDD2 | SDD2 | N/A |
Note: Unused analog inputs should be grounded. This aids in
shielding and prevents an undesired coupling path.