參數(shù)資料
型號(hào): 4450HG/3-K
廠商: EXAR CORP
元件分類: 微控制器/微處理器
英文描述: MICROPROCESSOR, PBGA324
封裝: ROHS COMPLIANT, HSBGA-324
文件頁數(shù): 48/92頁
文件大?。?/td> 780K
代理商: 4450HG/3-K
4450 – Data Sheet, DS-0131-06
Page 52
Hifn Confidential
6.3.1
RMII Connection Diagrams
Figure 6-19. RMII PHY Mode
rmii_bus0[2]
mii_txen
out
rmii_crs_rdv
out
mii_bus0[1:0]
mii_txd[1:0]
out
rmii_rxd[1:0]
out
Note
The RMII Specification allows for rmii_ref_clk to be driven by an external source in
any mode. The
4450 allows for either an input or output.
Table 6-14. 4450 RMII modes pin mappings
Pin Name
MAC-MII
PHY-MII
RMII Signal
I/O
RMII Signal
I/O
ref_clk
txen
rm ii_ref_clk
rm ii_bus1[2]
txd[1:0]
crs_rdv
rxd[1:0]
rm ii_bus1[1:0]
rm ii_bus0[2]
rm ii_bus0[1:0]
RE F_CLK
TX EN
TD [1:0]
RD[1:0]
CRS _R DV
4450
MA C
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