TMS320F2800137: sink/source current of IO pin

Part Number: TMS320F2800137

Tool/software:

Hi,

My customer is asking for IO sink/source current of the device.
According to datasheet, Electrical characteristics is -4mA and +4mA.
He wants to know this value is per pin or total current for all pins.
If the value is per pin, how much pins can drive the max current at the same time?

Thanks and regards,
Koichiro Tashiro