參數(shù)資料
型號: MPC8540VT833LC
廠商: Freescale Semiconductor
文件頁數(shù): 32/104頁
文件大?。?/td> 0K
描述: MPU POWERQUICC III 783FCPBGA
標(biāo)準(zhǔn)包裝: 36
系列: MPC85xx
處理器類型: 32-位 MPC85xx PowerQUICC III
速度: 833MHz
電壓: 1.2V
安裝類型: 表面貼裝
封裝/外殼: 784-BBGA,F(xiàn)CBGA
供應(yīng)商設(shè)備封裝: 783-FCPBGA(29x29)
包裝: 托盤
MPC8540 Integrated Processor Hardware Specifications, Rev. 4.1
Freescale Semiconductor
33
Ethernet: Three-Speed,10/100, MII Management
Figure 15 shows the MII transmit AC timing diagram.
Figure 15. MII Transmit AC Timing Diagram
8.3.2.2
MII Receive AC Timing Specifications
Table 32 provides the MII receive AC timing specifications.
Table 32. MII Receive AC Timing Specifications
Parameter/Condition
Symbol 1
Min
Typ
Max
Unit
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
%
RXD[7:0], TX_DV, TX_ER setup time to RX_CLK
tMRDVKH
10.0
ns
RXD[7:0], TX_DV, TX_ER hold time to RX_CLK
tMRDXKH
10.0
ns
RX_CLK clock rise and fall time
tMRXR, tMRXF
2,3
1.0
4.0
ns
Note:
1.The symbols used for timing specifications herein 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, tMRDVKH
symbolizes MII receive timing (MR) with respect to the time data input signals (D) reach the valid state (V) relative to
the tMRX clock reference (K) going to the high (H) state or setup time. Also, tMRDXKH symbolizes MII receive timing
(GR) with respect to the time data input signals (D) went invalid (X) relative to the tMRX clock reference (K) going to
the high (H) state or hold time. 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 tMRX represents the MII
(M) receive (RX) clock. For rise and fall times, the latter convention is used with the appropriate letter: R (rise) or F
(fall).
2.Signal timings are measured at 0.7 V and 1.9 V voltage levels.
3.Guaranteed by design.
TX_CLK
TXD[3:0]
tMTKHDX
tMTX
tMTXH
tMTXR
tMTXF
TX_EN
TX_ER
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