Our customer uses the 375MHz device of AM1808. They want to operate it at 250MHz.
Is the minimum frequency defined for each system clock?
For the PLL0_SYSCLK2:
"Important Notice: The USB0 controller module clock (PLL0_SYSCLK2) must be greater than 30 MHz for proper operation of the USB controller. A clock rate of 60 MHz or greater is recommended to avoid data throughput reduction."
AM1808 ARM Microprocessor (Rev. C)
http://www.ti.com/lit/ds/sprs653c/sprs653c.pdf
5.20 Universal Serial Bus OTG Controller (USB0) [USB2.0 OTG] - Page 176
For other system clock, is it defined?
Best regards,
Daisuke