NXP Semiconductors
KTFRDM34933EVBUG
FRDM-34933EVB evaluation board
KTFRDM34933EVBUG
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User guide
Rev. 1.0 — 15 March 2017
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Table 3. LED display
LED ID
Description
D5
Indicates when power is supplied to the board via JP2
4.4.2 Test point definitions
The following test points provide access to signals on the board.
Table 4. Test point definitions
TP#
Signal name
Description
TP1
VPWR
Power input after fuse
TP2
EN
Enable signal
TP3
GND1
Ground
TP4
GND2
Ground
TP5
IN1A
H-bridge Input signal for OUT1A
TP6
IN1B
H-bridge Input signal for OUT1B
TP7
IN2A
H-bridge Input signal for OUT2A
TP8
IN2B
H-bridge Input signal for OUT2B
4.4.3 Input signal definitions
The motor drive IC has as many as five input signals that are used to control certain
outputs or functions inside the circuit.
Table 5. Input signal definitions
Name on board
Description
IN1A
Controls OUT1A
IN1B
Controls OUT1B
IN2A
Controls OUT2A
IN2B
Controls OUT2B
EN
This signal enables output 1 and output 2
4.4.4 Output signal definitions
The motor drive IC has four output signals that are used to drive a single DC stepper
motor or two DC brushed motors.
Table 6. Output Signal Definitions
Name
Description
OUT1A
H-bridge 1 driver output phase 1A
OUT1B
H-bridge 1 driver output phase 1B
OUT2A
H-bridge 2 driver output phase 2A
OUT2B
H-bridge 2 driver output phase 2B