參數(shù)資料
型號: MPC8535AVTANG
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): 65/126頁
文件大?。?/td> 2861K
代理商: MPC8535AVTANG
Ethernet: Enhanced Three-Speed Ethernet (eTSEC), MII Management
MPC8535E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 3
Freescale Semiconductor
43
Figure 15. FIFO Receive AC Timing Diagram
2.9.2.2
GMII AC Timing Specifications
This section describes the GMII transmit and receive AC timing specifications.
2.9.2.2.1
GMII Transmit AC Timing Specifications
Table 28 provides the GMII transmit AC timing specifications.
Table 28. GMII Transmit AC Timing Specifications
At recommended operating conditions with L/TVDD of 3.3 V ± 5%.
Parameter/Condition
Symbol 1
Min
Typ
Max
Unit
GTX_CLK clock period
tGTK
—8.0
ns
GTX_CLK to GMII data TXD[7:0], TX_ER, TX_EN delay
tGTKHDX
3
0.5
5.0
ns
GTX_CLK data clock rise time (20%-80%)
tGTXR
——
1.0
ns
GTX_CLK data clock fall time (80%-20%)
tGTXF
——
1.0
ns
Notes:
1. The symbols used for timing specifications herein follow the pattern 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, tGTKHDV symbolizes GMII
transmit timing (GT) with respect to the tGTX clock reference (K) going to the high state (H) relative to the time date input
signals (D) reaching the valid state (V) to state or setup time. Also, tGTKHDX symbolizes GMII transmit timing (GT) with respect
to the tGTX clock reference (K) going to the high state (H) relative to the time date input signals (D) going invalid (X) 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 tGTX represents the GMII(G) transmit (TX) clock. For rise and fall times,
the latter convention is used with the appropriate letter: R (rise) or F (fall).
2. Data valid tGTKHDV to GTX_CLK Min Setup time is a function of clock period and max hold time. (Min Setup = Cycle time -
Max Hold)
tFIR
tFIRH
tFIRF
tFIRR
RX_CLK
RXD[7:0]
RX_DV
RX_ER
valid data
tFIRDX
tFIRDV
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