MPC8313ECZQADDC Freescale Semiconductor, MPC8313ECZQADDC Datasheet - Page 904
MPC8313ECZQADDC
Manufacturer Part Number
MPC8313ECZQADDC
Description
Microprocessors - MPU 8313 REV2.2 PB ENC EXT
Manufacturer
Freescale Semiconductor
Datasheet
1.MPC8313CZQADDC.pdf
(1214 pages)
Specifications of MPC8313ECZQADDC
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
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Enhanced Three-Speed Ethernet Controllers
15.6.7.2
Data is presented to the eTSEC for transmission by arranging it in memory buffers referenced by the
TxBDs. In the TxBD the user initializes the R, PAD, W, I, L, TC, PRE, HFE, CF, and TOE bits and the
length (in bytes) in the first word, and the buffer pointer in the second word. Unused fields or fields written
by the eTSEC must be initialized to zero.
15-186
Transmit Data Buffer Descriptors (TxBD)
MPC8313E PowerQUICC™ II Pro Integrated Processor Family Reference Manual, Rev. 2
Memory Map
RxBD Table
TxBD Table
(RBASE n )
(TBASE n )
Pointer
Pointer
Figure 15-144. Example of eTSEC Memory Structure for BDs
Beginning BD pointer
Figure 15-145. Buffer Descriptor Ring
W = 1
4
System Memory
Table for Ring n
Table for Ring n
0
Rx Buffer
Tx Buffer
RxBD
TxBD
3
1
2
Status & Control
Status & Control
Buffer Pointer
Buffer Pointer
Data Length
Data Length
Tx Buffer Descriptors
Rx Buffer Descriptors
Freescale Semiconductor
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