User Manual

PoStepVID6606 User's Manual 15. december 2020
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5 Serial protocol - step/direction signals
The PoStepVID6606’s digital TTL data input levels are +3.3V and +5V compatible. The serial data length
is 16-bit and contains step and direction signal for 8 motor driver inputs. Data is organized as follows:
D15
D14
D13
D12
…
D3
D2
D1
D0
Motor 8
Motor 7
Motor 2
Motor 1
Dir
Step
Dir
Step
Dir
Step
Dir
Step
Most significant bit (MSb) must be sent first! Step/Direction outputs are latched at rising edge of the
signal RCK. Driver VID6606 can operate with step signals frequency up to 1MHz. Two 16-bit data
package must be sent to generate single step pulse signal.
Serial data- timing diagram