The DEC F-11 is a multi-chip module consisting of 2 chips:
The Control chip (DC303) implements the microword access and sequencing functions of the F-11 chip set. Its key features are:
ROM/PLA control store (138 x 23 bit PLA terms, 414 ROM terms)
Chip set microsequencing
Interrupt logic
Abort logic
Initial decode PLA
The Data chip (DC302) implements the instruction execution path of the F-11 chip set. The Data chip operates under the control of microwords fetched from the Control chip(s). Its key features are:
Execution data path
PDP-11 architectural general registers (16 bit), three stack pointers
week 09, 1983: 
The Control chip (DC303) implements the microword access and sequencing functions of the F-11 chip set. Its key features are:
The Data chip (DC302) implements the instruction execution path of the F-11 chip set. The Data chip operates under the control of microwords fetched from the Control chip(s). Its key features are: