I was going through the GF180 memories. The signals CEN, WEN and GWEN seems like active high (from naming convention, there is no b/bar/n in the name). From the Verilog model it seems they are active low. Please confirm.

In companies I have worked with the traiing 'N' means 'Negated' so these are active low. Haven't checked the specific verilog files though.

I see. I thought ...EN means enable. It could be enable negated too. Thanks @Stefan Schippers

CE would be Chip-Enable, so CEN would be Chip-Enable-Negated. I guess the same applies for WEN and GWEN.