ZHCSEN4E September 2015 – April 2018 LMK03318
PRODUCTION DATA.
In this mode, the GPIO[5:0] pins allow hardware pin configuration of the PLL synthesizer, its input clock selection, and output frequency and type selection. I2C is still enabled, and the LSB of device address is set to 00 . The GPIO pins are 2-state and are sampled or latched at POR — the combination selects one of 64 page settings that are predefined in on-chip ROM. In this mode, automatic output divider and PLL post divider synchronization is performed on power up or upon toggling PDN. Table 14, Table 15, Table 17, and Table 18 show the predefined ROM configurations according to the GPIO[5:0] pin settings.
Following are the blocks that are configured by the GPIO[5:0] pins.