Everything You Need to Know About CY7B991/2 (RoboClock), CY7B9911 (RoboClock+), and CY7B9910/20
Robo · 1997
Figure 1 is a general block diagram of Cypress’s Programmable Skew Clock Buffer (internally called RoboClock). RoboClock employs a phase-locked-loop architecture to provide output clocks that are aligned both in phase and in frequency with a reference input clock. Each of the four output pairs is controlled by two dedicated three-level function select inputs that allow the outputs to be phase adjusted by as much as ±18 ns, divided, multiplied, or inverted. In all, over 26,000 different output combinations are possible.