The EZ-USB boot loader supports two I2C EEPROM types:
■ EEPROMs with slave address 1010 that use an 8-bit internal address ■ EEPROMs with slave address 1010 that use a 16-bit internal address EEPROMs with densities up to 256 bytes require only a single address byte; larger EEPROMs require two address bytes.
The EZ-USB must determine which EEPROM type is connected — one or two address bytes — so that it can properly read
the EEPROM.
The EZ-USB uses the EEPROM device-address pins A2, A1, and A0 to determine whether to send out one or two bytes of
address. As shown in Table 13-11, single byte address EEPROMs must be strapped to address 000, while double byte
address EEPROMs must be strapped to address 001.