Texas Instruments C2000

Inter-Integrated Circuit (I2C)
C2000 Microcontroller Workshop - Communications 13 - 19
Inter-Integrated Circuit (I2C)
Inter-Integrated Circuit (I2C)
 Philips I2C-bus specification compliant, version 2.1

Data transfer rate from 10 kbps up to 400 kbps
 Each device can be considered as a Master or Slave
 Master initiates data transfer and generates clock signal
 Device addressed by Master is considered a Slave
 Multi-Master mode supported
 Standard Mode – send exactly n data values (specified in register)
 Repeat Mode – keep sending data values (use software to initiate a
stop or new start condition)
28xx
I2C
I2C
Controller
I2C
EPROM
28xx
I2C
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Pull-up
Resistors
V
DD
Serial Data (SDA)
Serial Clock (SCL)
I2C Block Diagram
TX FIFO
RX FIFO
I2CDXR
I2CDRR
I2CXSR
I2CRSR
Clock
Circuits
SDA
SCL