Table 4-2. Description of User-Selectable Settings on MCF8315EVM (Default in Bold) (continued)
Designator
Setting Name
Description
Layer
Position
Function
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
Hardware and Software Overview
10
MCF8315EVM Evaluation Module
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