參數(shù)資料
型號: MPC8568EVTAUJJ
廠商: Freescale Semiconductor
文件頁數(shù): 76/139頁
文件大?。?/td> 0K
描述: MPU POWERQUICC III 1023-PBGA
標準包裝: 24
系列: MPC85xx
處理器類型: 32-位 MPC85xx PowerQUICC III
速度: 1.333GHz
電壓: 1.1V
安裝類型: 表面貼裝
封裝/外殼: 1023-BBGA,F(xiàn)CBGA
供應(yīng)商設(shè)備封裝: 1023-FCPBGA(33x33)
包裝: 托盤
MPC8568E/MPC8567E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 1
Freescale Semiconductor
41
Ethernet Interface and MII Management
Figure 20 provides the AC test load for eTSEC.
Figure 20. eTSEC AC Test Load
Figure 21 shows the RMII receive AC timing diagram.
Figure 21. RMII Receive AC Timing Diagram
8.3
Ethernet Management Interface Electrical Characteristics
The electrical characteristics specified here apply to MII management interface signals MDIO
(management data input/output) and MDC (management data clock).
RXD[1:0], CRS_DV, RX_ER hold time to REF_CLK
rising edge
tRMRDX
2.0
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, tMRDXKL 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 low (L) state or hold time. Note that, in general, the clock reference symbol representation is based
on 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).
Table 36. RMII Receive AC Timing Specifications (continued)
At recommended operating conditions with L/TVDD of 3.3 V ± 5%.
Parameter/Condition
Symbol 1
Min
Typ
Max
Unit
Output
Z0 = 50 Ω
LVDD/2
RL = 50 Ω
REF_CLK
RXD[1:0]
tRMRDX
tRMR
tRMRH
tRMRR
tRMRF
CRS_DV
RX_ER
tRMRDV
Valid Data
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