MPC8313EZQADDC Freescale Semiconductor, MPC8313EZQADDC Datasheet - Page 580

• Manufacturer Part Number: MPC8313EZQADDC
• Description: Microprocessors - MPU 8313 REV2.2 PB W/ENC
• Manufacturer: Freescale Semiconductor

Specifications of MPC8313EZQADDC

• Processor Series: MPC8313E
• Core: e300
• Data Bus Width: 16 bit
• Maximum Clock Frequency: 133 MHz
• Program Memory Size: 16 KB
• Data Ram Size: 16 KB
• Interface Type: I2C
• Mounting Style: SMD/SMT
• Package / Case: PBGA
• Number Of Programmable I/os: 32
• Number Of Timers: 4

DMA/Messaging Unit
Example: Big-endian mode descriptor’s data structure. Note that the descriptor structure must be aligned
on an 8-word boundary.
struct {
} Descriptor;
Results:
12.4.4.2
In little-endian mode, each segment descriptor should be programmed in descending significant-byte
order.
Example: Little-endian mode descriptor’s data structure. Note that the descriptor structure must be
aligned on an 8-word boundary.
struct {
} Descriptor;
Results:
12.5
12.5.1
The initialization steps of a DMA transfer in direct mode are described as follows:
12.5.2
The initialization steps of a DMA transfer in chaining mode are described as follows:
12-20
1. Poll the CB (channel busy) bit in the DMA status register (DMASRn) to make sure the DMA
2. Initialize the DMASARn, DMADARn, and the DMABCRn.
3. Initialize DMAMRn[CTM]) to indicate direct mode. Other control parameters in the mode register
4. First clear then set the DMAMRn[CS] to start the DMA transfer.
1. Build a chain of descriptor segments in memory. Refer to
channel is idle.
can also be initialized here if necessary.
Descriptors.”
Initialization/Application Information
double a;
double b;
double c;
double d;
Source Address = 0x44332211 <MSB..LSB>
Destination Address = 0x88776655 <MSB..LSB>
Next Descriptor Address = 0x21436587 <MSB..LSB>
Byte Count = 0x67452301 <MSB..LSB>
double a;
double b;
double c;
double d;
Source Address = 0x44332211 <MSB..LSB>
Destination Address = 0x88776655 <MSB..LSB>
Next Descriptor Address = 0x12345678 <MSB..LSB>
Byte Count = 0x76543210 <MSB..LSB>
Initialization Steps in Direct Mode
Initialization Steps in Chaining Mode
Descriptor in Little-Endian Mode
MPC8313E PowerQUICC™ II Pro Integrated Processor Family Reference Manual, Rev. 2
/* 0x1122334455667788 double word*/
/* 0x55667788aabbccdd double word*/
/* 0x8765432101234567 double word */
/* 0x0123456789abcdef double word */
/* 0x8877665544332211 double word*/
/* 0x1122334488776655 double word*/
/* 0x7654321012345678 double word */
/* 0x0123456776543210 double word */
Section 12.4.4, “DMA Segment
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