參數(shù)資料
型號(hào): DS33ZH11
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: 網(wǎng)絡(luò)接口
英文描述: Ethernet Mapper
中文描述: DATACOM, NETWORK INTERFACE SUPPORT CIRCUIT, PBGA100
封裝: 10 X 10 MM, 1.41 MM HEIGHT, 0.80 MM PITCH, CSBGA-100
文件頁數(shù): 141/169頁
文件大?。?/td> 1049K
代理商: DS33ZH11
DS33Z11 Ethernet Mapper
Figure 10-5 MII Transmit Functional Timing
141 of 169
TXD[3:0]
TX_EN
TX_CLK
P
R
E
A
E
M
B
L
E
F
C
S
Figure 10-6 MII Transmit Half Duplex with a Collision Functional Timing
TXD[3:0]
TX_EN
TX_CLK
P
R
E
A
M
B
L
E
J
J
J
J
J
J
J
J
CRS
COL
Receive Data (RXD[3:0]) is clocked from the external PHY synchronously with RX_CLK. The RX_CLK signal is
2.5 MHz for 10 Mbps operation and 25 MHz for 100 Mbps operation. RX_DV is asserted by the PHY from the first
nibble of the preamble in 100 Mbps operation or first nibble of SFD for 10 Mbps operation. The data on RXD[3:0]
is not accepted by the MAC if RX_DV is low or RX_ERR is high (in DTE mode). RX_ERR should be tied low when
in DCE Mode.
Figure 10-7 MII Receive Functional Timing
RXD[3:0]
RX_CLK
P
R
E
A
E
M
B
L
E
F
C
S
In RMII Mode, TX_EN is high with the first bit of the preamble. The TXD[1:0] is synchronous with the 50 MHz
REF_CLK. For 10 Mbps operation, the data bit outputs are updated every 10 clocks
.
Figure 10-8 RMII Transmit Interface Functional Timing
TXD[1:0]
TX_EN
REFCLK
P
R
E
A
M
B
L
E
F
C
S
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