Texas Instruments DRV887 Series, User Manual, Page: 6 / 10

PMODE Jumper and Speed-Adjustment Potentiometers
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6 SLVUBG7C – August 2018 – Revised December 2019
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DRV8876/74 Evaluation Module
5.1 PH/EN Control Mode (PMODE = Logic Low)
When the PMODE pin is logic low on power up, the device latches into PH/EN mode ( Figure 3 ). PH/EN
mode allows for the H-bridge to be controlled with a speed and direction type of interface. The truth table
for PH/EN mode is shown in
Table 1 . This method is best for bidirectional driving for one motor.
Figure 3. PMODE jumper configuration for PH/EN
Table 1. PH/EN Control Mode
EN PH OUT1 OUT2 DESCRIPTION
LOW - turn
IN1 PWM
Pot
completely
counterclock
wise
X L L Brake, (Low-Side Slow Decay)
PWM - set
IN1 PWM pot
in any
position
LOW - turn
IN2 PWM
completely
counterclock
wise
L H Reverse (OUT2 → OUT1)
PWM - set
IN1 PWM pot
in any
position
HIGH - turn
IN2 PWM
completely
clockwise
H L Forward (OUT1 → OUT2)