參數(shù)資料
型號(hào): MPC8535CVTANGA
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 800 MHz, MICROPROCESSOR, PBGA783
封裝: 29 X 29 MM, 2.80 MM HEIGHT, 1 MM PITCH, LEAD FREE, PLASTIC, FCBGA-783
文件頁數(shù): 66/126頁
文件大?。?/td> 2861K
代理商: MPC8535CVTANGA
MPC8535E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 3
Ethernet: Enhanced Three-Speed Ethernet (eTSEC), MII Management
Freescale Semiconductor
44
Figure 16 shows the GMII transmit AC timing diagram.
Figure 16. GMII Transmit AC Timing Diagram
2.9.2.2.2
GMII Receive AC Timing Specifications
Table 29 provides the GMII receive AC timing specifications.
Figure 17 provides the AC test load for eTSEC.
Figure 17. eTSEC AC Test Load
Table 29. GMII Receive AC Timing Specifications
At recommended operating conditions with L/TVDD of 3.3 V ± 5%.
Parameter/Condition
Symbol 1
Min
Typ
Max
Unit
RX_CLK clock period
tGRX
—8.0
ns
RX_CLK duty cycle
tGRXH/tGRX
35
65
ns
RXD[7:0], RX_DV, RX_ER setup time to RX_CLK
tGRDVKH
2.0
ns
RXD[7:0], RX_DV, RX_ER hold time to RX_CLK
tGRDXKH
0—
ns
RX_CLK clock rise (20%-80%)
tGRXR
——
1.0
ns
RX_CLK clock fall time (80%-20%)
tGRXF
——
1.0
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).
GTX_CLK
TXD[7:0]
tGTKHDX
tGTX
tGTXH
tGTXR
tGTXF
tGTKHDV
TX_EN
TX_ER
Output
LVDD/2
RL = 50 Ω
Z0 = 50 Ω
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