Cypress Semiconductor CY3280-MBR3 Manual Do Utilizador

CY3280-MBR3 Evaluation Kit User Guide, Doc. #: 001-89905 Rev. *B

77

Advanced Topics

Figure 6-5.  Reading from I

2

C Slave in BCP

The command format to communicate with this kit using the BCP is as follows:

■

Write data command format: To write ‘N’ bytes of data after the register offset address, use this 
format to send data.

■

Read data command format: To read ‘N’ bytes of data beginning with the register offset address, 
use this format to receive data.

Notes: 

■

The Write/Read transaction with an MBR3 device requires specifying an offset address to the 
MBR3 device from which the data reading/writing should start. The MBR3 device automatically 
increments the register address for every byte after the offset address. Therefore, a Read/Write 
transaction with an MBR3 device starts with an I

2

C write operation to specify the register offset to 

the MBR3 device.

■

All bytes in the IIC file are in hex format.

The status box below the editor window shows the offset register content, where:

■

w – Write command.

■

Address – Slave device address (in hex). Default address for the device on this kit is 0x37.

■

Register offset – Offset address of the configuration register you want to write. See the 

for the list of registers and their offset addresses.

■

Data – Write ‘N’ byte data here to write sequentially beginning with the offset address.

■

r – Read command.

w

Slave address 

Register offset

Data to write (N bytes)

p

w

Slave address 

Register offset

r

Slave address

write ‘N’ number of x’s with 

spaces

p