Microchip Technology MA330016 Data Sheet

© 2007-2011 Microchip Technology Inc.

DS70290J-page 163

Many useful resources are provided on the main prod-
uct page of the Microchip web site for the devices listed
in this data sheet. This product page, which can be
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and additional information.

16.2.1

KEY RESOURCES

• Section 13. “Inter-Integrated Circuit™ (I

(DS70195)

I2CxCON and I2CxSTAT are control and status
registers, respectively. The I2CxCON register is
readable and writable. The lower six bits of I2CxSTAT
are read-only. The remaining bits of the I2CSTAT are
read/write.
• I2CxRSR is the shift register used for shifting 

data.

• I2CxRCV is the receive buffer and the register to 

which data bytes are written, or from which data 
bytes are read.

• I2CxTRN is the transmit register to which bytes 

are written during a transmit operation.

• The I2CxADD register holds the slave address.
• A status bit, ADD10, indicates 10-bit Address 

mode.

•  I2CxBRG acts as the Baud Rate Generator 

(BRG) reload value. 

In receive operations, I2CxRSR and I2CxRCV together
form a double-buffered receiver. When I2CxRSR
receives a complete byte, it is transferred to I2CxRCV,
and an interrupt pulse is generated.

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