參數(shù)資料
型號: MPC8540VTAQFC
廠商: Freescale Semiconductor
文件頁數(shù): 31/104頁
文件大?。?/td> 0K
描述: MPU POWERQUICC III 783FCPBGA
標準包裝: 36
系列: MPC85xx
處理器類型: 32-位 MPC85xx PowerQUICC III
速度: 1.0GHz
電壓: 1.3V
安裝類型: 表面貼裝
封裝/外殼: 784-BBGA,F(xiàn)CBGA
供應商設備封裝: 783-FCPBGA(29x29)
包裝: 托盤
MPC8540 Integrated Processor Hardware Specifications, Rev. 4.1
32
Freescale Semiconductor
Ethernet: Three-Speed,10/100, MII Management
8.3.2 MII AC Electrical Specifications
This section describes the MII transmit and receive AC specifications.
8.3.2.1
MII Transmit AC Timing Specifications
Table 31 provides the MII transmit AC timing specifications.
Table 30. MII DC Electrical Characteristics
Parameter
Symbol
Min
Max
Unit
Supply voltage 3.3 V
OVDD
3.13
3.47
V
Output high voltage
(OVDD = Min, IOH = –4.0 mA)
VOH
2.40
OVDD + 0.3
V
Output low voltage
(OVDD = Min, IOL = 4.0 mA)
VOL
GND
0.50
V
Input high voltage
VIH
1.70
V
Input low voltage
VIL
–0.3
0.90
V
Input high current
(VIN= OVDD
1)
IIH
—40
μA
Input low current
(VIN= GND
1)
IIL
–600
μA
Note:
1.Note that the symbol VIN, in this case, represents the OVIN symbol referenced in Table 1 and Table 2.
Table 31. MII Transmit AC Timing Specifications
At recommended operating conditions with OVDD of 3.3 V ± 5%.
Parameter/Condition
Symbol 1
Min
Typ
Max
Unit
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 and fall time
tMTXR, tMTXF
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,
tMTKHDX symbolizes MII transmit timing (MT) from 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).
2.Signal timings are measured at 0.7 V and 1.9 V voltage levels.
3.Guaranteed by design.
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