How many control pins needed for L298N H-Bridge?

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I have a simple robot with two DC motors. Using the L298N Dual H-Bridge, what's the minimum number of control pins I can use to give me forward, back and turn?

Here is the date sheet of l298n

Here's a typical setup for the chip. It looks like I'll need 6 control lines to control 2 motors.

If I tied Ven high and relied on the "C=D Fast Motor Stop" when idle would this be bad?
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