Hi,
We have 80MHz (LVCMOS compliant) oscillator output fed to the PRI IN & 38.4MHz AT Cut Crystal to AUX IN of the PLL. At the time of powering the board (those that have come from FAB house), the PLL would be unprogrammed. In page 25 of the datasheet, they specify the default values of EEPROM that shall loaded in the RAM. However, it is mentioned that "Reference is set at 25MHz".
- We wanted to know, how the said 25MHz would be available for the PLL?
- Should we provide external 25MHz oscillator output to the SEC IN pin?
- How can the user control the EECLKSEL bit?
- Even with 80MHz (to PRI IN) and 38.4MHz (to AUX IN) clocks fed to the PLL, would we still continue to receive -
Request your kind support. Thanks and Regards, Vinay