32.8 Core and Bus Independent Clocks for Peripherals
The following table lists the peripherals that can operate while the core, bus and peripheral clock frequencies are modified, thus providing communications at a bit rate which is independent for the core/bus/peripheral clock. This mode of operation is possible by using the internally generated independent clock sources.
| Peripheral | Specific Clock Requirements | 
|---|---|
| GMAC | – | 
| UDPHS | – | 
| UHPHS | – | 
| CLASSD | GCLK | 
| I2SC | GCLK | 
| FLEXCOM (USART, SPI, TWI) | GCLK | 
| ISC | PCK (pad clock) | 
| MCAN | GCLK | 
| TC | GCLK | 
| ADC | GCLK | 
| UART | GCLK | 
| TWI | GCLK | 
| SPI | GCLK | 
