SLLU362 December 2022
The MCF8315EVM includes a variety of user-selectable jumpers, switches, and resistors on the entirety of the evaluation board to configure settings. Table 4-2 summarizes all of these configurable settings.
| Designator | Setting Name | Description | Layer | Position | Function |
|---|---|---|---|---|---|
| L1/L2/R9 | Buck Regulator mode | User populates L1, L2, or R9 to choose switching component for buck regulator | Top | L1 = 47uH Inductor | Inductor Mode |
| Bottom | L2 = 22 μH | Inductor Mode | |||
| Bottom | R9 = 22 Ω | Resistor Mode | |||
| J5 | 3V3_SEL | Select 3.3 V for MCU power | Top | J5 = 3V3EXT | External |
| J5 = 3V3COM | From FTDI (30 mA) | ||||
| J3 | 5V_SEL | Select 5 V for FTDI power | Top | J3 = 5V_EXT | External |
| J3 = 5V_USB | From USB power (500 mA) | ||||
| J1 | SPEED_SEL | Selects SPEED input source | Top | J1 = EXT | External EXT_SPEED test point |
| J1 = POT | From Potentiometer R4 | ||||
| J1 = PWM | On-board PWM from MSP430 | ||||
| J6 | MSP to MCx Shunt jumper bridge | Connects signals from MCU and user switches to MCx8315 when jumpers are inserted | Top | DRVOFF_SW | DRVOFF |
| DIR_SW | DIR | ||||
| BRAKE_SW | BRAKE | ||||
| SPEED_IN | SPEED | ||||
| MSP_SOMI/SCL | MCx_SCL | ||||
| MSP_SIMO/SDA | MCx_SDA | ||||
MSP_CLK | NC | ||||
| MSP_STE | NC | ||||
| MSP_A3 | DACOUT2/SOX | ||||
| MSP_A2 | DACOUT2 | ||||
MSP_A1 | DACOUT1 | ||||
MSP_ALARM | ALARM | ||||
MSP_nFAULT | nFAULT | ||||
MSP_FG | FG | ||||
NC | VBK | ||||
AGND | AGND | ||||
S1 | BRAKE | Turns on all low-side MOSFETs | Top | Left | Brake enabled |
| Right | Brake disabled | ||||
| S2 | DIR | Controls direction of motor | Top | Left | ABC |
Right | ACB | ||||
| S3 | DRVOFF | Disables gate drivers | Top | Left | MCF8315 FETs disabled |
| Right | MCF8315 FETs enabled |