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MAC7200 Datasheet(PDF) 625 Page - Freescale Semiconductor, Inc

Part # MAC7200
Description  MAC7200 Microcontroller Family Reference Manual
PDF  976 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MAC7200 Datasheet(HTML) 625 Page - Freescale Semiconductor, Inc

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Introduction
MAC7200 Microcontroller Family Reference Manual, Rev. 2
Freescale Semiconductor
547
Figure 29-2. I2C 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 I2C
module requires data to be written or read from the data register.
Further details of the DMA interface can be found in the Initialisation/Application section of this
document.
29.1.3
Features
The I2C module has the following key features:
•
Compatibility with I2C Bus standard.
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



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