710623Z Rev B F/W, Config Card U53 CPLD Code Version : 0.2.27.0 Checksum : 330F This contains sources for U53 on Clearcom 710437Z Config-200 Eclipse processor card. The raw part that this code opeartes in is a Xilinx XC95144 This part acts as a controller for the PLL locking on to backplane clock from a second connected rack.