SLLU387 August 2024
The MCF8315RRYEVM includes a variety of user-selectable jumpers, switches, and resistors on the entirety of the evaluation board to configure settings. Table 2-2 summarizes all of these configurable settings.
Designator | Setting Name | Description | Layer | Position | Function |
---|---|---|---|---|---|
L1/L2/R14 | Buck Regulator mode | User populates L1, L2, or R14 to choose switching component for buck regulator | Top | L1 = 47uH Inductor | Inductor Mode |
Bottom | L2 = 22μH | Inductor Mode | |||
Bottom | R14 = 22Ω | Resistor Mode | |||
J5 | 3V3_SEL | Select 3.3V for MCU power | Top | J5 = 3V3EXT | External |
J5 = 3V3COM | From FTDI (30mA) | ||||
J3 | 5V_SEL | Select 5V for FTDI power | Top | J3 = 5V_EXT | External |
J3 = 5V_USB | From USB power (500mA) | ||||
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 |
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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 |
SCL |
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MSP_SIMO/SDA | SDA | ||||
MSP_CLK |
NC |
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MSP_STE |
NC |
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MSP_A3 |
DACOUT |
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MSP_A2 |
NC |
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MSP_A1 |
NC |
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MSP_ALARM |
ALARM |
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MSP_nFAULT |
nFAULT |
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MSP_FGOUT |
FGOUT |
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NC |
VBK |
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AGND |
PGND |
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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 |