参数资料
型号: MPC8533VTALFB
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 667 MHz, RISC PROCESSOR, PBGA783
封装: 29 X 29 MM, 1 MM PITCH, LEAD FREE, PLASTIC, BGA-783
文件页数: 41/116页
文件大小: 1277K
代理商: MPC8533VTALFB
MPC8533E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 2
30
Freescale Semiconductor
Enhanced Three-Speed Ethernet (eTSEC), MII Management
8.4.1
MII Transmit AC Timing Specifications
Table 27 provides the MII transmit AC timing specifications.
Figure 12 shows the MII transmit AC timing diagram.
Figure 12. MII Transmit AC Timing Diagram
8.4.2
MII Receive AC Timing Specifications
Table 28 provides the MII receive AC timing specifications.
Table 27. MII Transmit AC Timing Specifications
At recommended operating conditions with L/TVDD of 3.3 V ± 5% or 2.5V ± 5%
Parameter/Condition
Symbol1
Min
Typ
Max
Unit
Notes
TX_CLK clock period 10 Mbps
tMTX
—400
ns
TX_CLK clock period 100 Mbps
tMTX
—40
ns
TX_CLK duty cycle
tMTXH/tMTX
35
65
%
TX_CLK to MII data TXD[3:0], TX_ER, TX_EN
delay
tMTKHDX
1
5
15
ns
TX_CLK data clock rise (20%–80%)
tMTXR
1.0
4.0
ns
TX_CLK data clock fall (80%–20%)
tMTXF
1.0
4.0
ns
Note:
1. The symbols used for timing specifications follow the pattern of t(first two letters of functional block)(signal)(state)(reference)(state) for
inputs and t(first two letters of functional block)(reference)(state)(signal)(state) for outputs. For example, tMTKHDX symbolizes MII transmit
timing (MT) for the time tMTX clock reference (K) going high (H) until data outputs (D) are invalid (X). Note that, in general,
the clock reference symbol representation is based on two to three letters representing the clock of a particular functional.
For example, the subscript of tMTX represents the MII(M) transmit (TX) clock. For rise and fall times, the latter convention is
used with the appropriate letter: R (rise) or F (fall).
Table 28. MII Receive AC Timing Specifications
At recommended operating conditions with L/TVDD of 3.3 V ± 5%.or 2.5V ± 5%.
Parameter/Condition
Symbol1
Min
Typ
Max
Unit
Notes
RX_CLK clock period 10 Mbps
tMRX
—400
ns
RX_CLK clock period 100 Mbps
tMRX
—40
ns
RX_CLK duty cycle
tMRXH/tMRX
35
65
%
TX_CLK
TXD[3:0]
tMTKHDX
tMTX
tMTXH
tMTXR
tMTXF
TX_EN
TX_ER
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