參數(shù)資料
型號： MPC8568ECVTAUJJA
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 32-BIT, 1333 MHz, RISC PROCESSOR, PBGA1023
封裝： 33 X 33 MM, 2.75 MM HEIGHT, 1 MM PITCH, LEAD FREE, PLASTIC, FCBGA-1023
文件頁數(shù)： 66/139頁
文件大小： 1449K
代理商： MPC8568ECVTAUJJA
MPC8568E/MPC8567E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 1
32
Freescale Semiconductor
Ethernet Interface and MII Management
Figure 10 provides the AC test load for eTSEC.
Figure 10. eTSEC AC Test Load
Figure 11 shows the GMII receive AC timing diagram.
Figure 11. GMII Receive AC Timing Diagram
8.2.3
MII AC Timing Specifications
This section describes the MII transmit and receive AC timing specifications.
RX_CLK clock fall time (80%-20%)
tGRXF
2
—1.0
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, tGRDVKH symbolizes GMII
receive timing (GR) with respect to the time data input signals (D) reaching the valid state (V) relative to the tRX clock
reference (K) going to the high state (H) or setup time. Also, tGRDXKL symbolizes GMII receive timing (GR) with respect to
the time data input signals (D) went invalid (X) relative to the tGRX 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 tGRX represents the GMII (G) receive (RX) clock. For rise and fall times, the latter
convention is used with the appropriate letter: R (rise) or F (fall).
2. Guaranteed by design
Table 28. GMII 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
LVDD/2
RL = 50 Ω
Z0 = 50 Ω
RX_CLK
RXD[7:0]
tGRDXKH
tGRX
tGRXH
tGRXR
tGRXF
tGRDVKH
RX_DV
RX_ER
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