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Chapter 22 Inter-Integrated Circuit Bus Controller Module (I
2
C)
MPC5606BK Microcontroller Reference Manual, Rev. 2
410
Freescale Semiconductor
Figure 22-10. I
2
C module DMA interface block diagram
At least 3 bytes of data per frame must be transferred from/to the slave when using DMA mode, although
in practice it will only be worthwhile using the DMA mode when there is a large number of data bytes to
transfer per frame.
Two internal signals, TX request and RX request, are used to signal to a DMA controller when the I
2
C
module requires data to be written or read from the data register.
Input
Sync
In/Out
Data
Shift
Register
Address
Compare
SDA
IRQ
Address
Clock
Control
Start
Stop
Arbitration
Control
CTRL_REG
FREQ_REG ADDR_REG
STATUS_REG
DATA_REG
ADDR_DECODE
DATA_MUX
Data bus
SCL
DMA request
Summary of Contents for MPC5605BK
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Page 20: ...MPC5606BK Microcontroller Reference Manual Rev 2 20 Freescale Semiconductor...
Page 103: ...MPC5606BK Microcontroller Reference Manual Rev 2 Freescale Semiconductor 103 Clocks and power...
Page 645: ...MPC5606BK Microcontroller Reference Manual Rev 2 Freescale Semiconductor 643 Timers...
Page 715: ...MPC5606BK Microcontroller Reference Manual Rev 2 Freescale Semiconductor 713 ADC system...
Page 787: ...MPC5606BK Microcontroller Reference Manual Rev 2 Freescale Semiconductor 787 Memory...
Page 893: ...MPC5606BK Microcontroller Reference Manual Rev 2 Freescale Semiconductor 893 Integrity...
Page 943: ...MPC5606BK Microcontroller Reference Manual Rev 2 Freescale Semiconductor 943 Debug...