As noted in
Section 1, the EVM interfaces with the PHI that, in turn, communicates with the computer
over USB. There are two devices on the EVM with which the PHI communicates: the
ADS8900B ADC (over SPI or
multiSPI™) and the EEPROM
(over I
2C). The EEPROM comes preprogrammed with the information
required to configure and initialize the ADS8900BEVM-PDK platform. When the
hardware is initialized, the EEPROM is no longer used.