MPC8313ZQADDC Freescale Semiconductor, MPC8313ZQADDC Datasheet - Page 904

• Manufacturer Part Number: MPC8313ZQADDC
• Description: Microprocessors - MPU 8313 REV2.2 PB NO ENC
• Manufacturer: Freescale Semiconductor

Specifications of MPC8313ZQADDC

• Processor Series: MPC8313
• 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

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