User guide

CY3687 MoBL-USB FX2LP18 Development Kit User Guide, Doc. # 001-68582 Rev. *B 89
MoBL-USB Development Kit Firmware Examples
Figure 8-17. A8 Vendor Command Operation using CyControlCenter
5. 0xA9 command- Read/Write Large EEPROM
The Large EEPROM U7 on MoBL-USB FX2LP18 can be Written and Read using 0XA9 com-
mand. A sample firmware Image LP18_dvk.iic located at <Installed_directory>\<Version>\Firm-
ware\Connect is used as sample data. Before sending 0xA9 command switch SW2-LG-SM and
SW1-LARGE EEPROM settings should be set.Short 2-3 pins of JP7 to enable writes on
EEPROM.Copy the content of LP18_dvk.iic to Data to Send box.Select OUT direction, Req
Code =0xA9 Req Type=vendor. Click Transfer Data button. Similarly read back the data in IN
direction. Following Figure 8-18 summarizes the entire operation.
Figure 8-18. A9 Vendor Command Operation using CyControlCenter
6. 0xAA/0xAB-Setting I2C interface frequency
Using this command the I2C interface frequency can be set to 100 kHz or 400 kHz. Figure 8-19
summarizes the command trigger using CyControlCenter.