The results of this power-on test are reported in the ID1 and ID0 bits, as shown in
Table 4-3.
Table 4-3. Results of Power-On I2C Test
ID1
0
ID0
0
Meaning
No EEPROM detected
0
1
One-byte-address load EEPROM detected
Two-byte-address load EEPROM detected
Not used
1
0
1
1
Other EEPROM devices (with device address of 1010) can be attached to the I2C bus for
general purpose 8051 use, as long as they are strapped for address other than 000 or 001.
If a 24LC00 EEPROM is used, no other EEPROMS with device address 1010 may be
used, because the 24LC00 responds to all eight sub-addresses.
Page 4-14
Chapter 4. EZ-USB CPU
EZ-USB TRM v1.9
CYPRESS [ CYPRESS ]
