What external and internal clock rates do the 5000 Series chips support?
The FT 5000 Smart Transceiver and the Neuron 5000 Processor each require an external 10MHz crystal oscillator. From this external clock, an on-chip phase-locked loop (PLL) applies a user-specified multiplier to generate the internal clock for the chip. The maximum multiplier is 8, resulting in a maximum internal clock speed of 80 MHz. The 3100 Series chips used a fixed multiplier of 0.5, so that a 10MHz external clock resulted in a 5MHz internal clock. As a result, a 5000 Series chip running with a 10MHz crystal and the maximum 8 times clock multiplier is 16 times faster than a 3100 Series chip running with a 10MHz crystal and the fixed 0.5 multiplier.
