參數(shù)資料
型號: MPC8533VTANGB
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, RISC PROCESSOR, PBGA783
封裝: 29 X 29 MM, 1 MM PITCH, LEAD FREE, PLASTIC, BGA-783
文件頁數(shù): 46/116頁
文件大?。?/td> 1277K
代理商: MPC8533VTANGB
MPC8533E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 2
Freescale Semiconductor
35
Enhanced Three-Speed Ethernet (eTSEC), MII Management
Figure 18 shows the RGMII and RTBI AC timing and multiplexing diagrams.
Figure 18. RGMII and RTBI AC Timing and Multiplexing Diagrams
Fall time (20%–80%)
tRGTF
0.75
ns
Notes:
1. In general, the clock reference symbol representation for this section is based on the symbols RGT to represent RGMII and
RTBI timing. For example, the subscript of tRGT represents the TBI (T) receive (RX) clock. Note also that the notation for rise
(R) and fall (F) times follows the clock symbol that is being represented. For symbols representing skews, the subscript is
skew (SK) followed by the clock that is being skewed (RGT).
2. This implies that PC board design will require clocks to be routed such that an additional trace delay of greater than 1.5 ns
will be added to the associated clock signal.
3. For 10 and 100 Mbps, tRGT scales to 400 ns ± 40 ns and 40 ns ± 4 ns, respectively.
4. Duty cycle may be stretched/shrunk during speed changes or while transitioning to a received packet's clock domains as
long as the minimum duty cycle is not violated and stretching occurs for no more than three tRGT of the lowest speed
transitioned between.
5. Guaranteed by design.
Table 32. RGMII and RTBI AC Timing Specifications (continued)
At recommended operating conditions with L/TVDD of 2.5 V ± 5%.
Parameter/Condition
Symbol1
Min
Typ
Max
Unit
Notes
GTX_CLK
tRGT
tRGTH
tSKRGT_TX
TX_CTL
TXD[8:5]
TXD[7:4]
TXD[9]
TXERR
TXD[4]
TXEN
TXD[3:0]
(At Transmitter)
TXD[8:5][3:0]
TXD[7:4][3:0]
TX_CLK
(At PHY)
RX_CTL
RXD[8:5]
RXD[7:4]
RXD[9]
RXERR
RXD[4]
RXDV
RXD[3:0]
RX_CLK
(At PHY)
tSKRGT_RX
tSKRGT_TX
tRGTH
tRGT
GTX_CLK
(At Receiver)
RXD[8:5][3:0]
RXD[7:4][3:0]
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