gpio available on DIS08070H V 3.0

Hello everyone ... I'm trying to implement a control through a graphical interface of 4 stepmotors but before starting I need to be sure of the amount of gpio available in this module .. I have not been able to verify in the electrical diagram the gpio available in gpio_d connector .... to complete the project I need 4 gpio available in full time for speed control and another 4 to use multiplexer in matters of turning directions .... in short, could someone tell me how many gpio I can have free in that module ..... thank you in advance for your time