DS33X41+ Maxim Integrated Products, DS33X41+ Datasheet - Page 66
DS33X41+
Manufacturer Part Number
DS33X41+
Description
IC MAPPING ETHERNET 256CSBGA
Manufacturer
Maxim Integrated Products
Datasheet
1.DS33X11.pdf
(375 pages)
Specifications of DS33X41+
Applications
Data Transport
Interface
Parallel/Serial
Voltage - Supply
1.8V, 2.5V, 3.3V
Package / Case
256-CSBGA
Mounting Type
Surface Mount
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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8.15.4 RMII Mode
The Ethernet interface can be configured for RMII operation by setting the hardware pin RMIIMIIS high. RMII
interface operates synchronously from the external 50MHz reference (REF_CLK). Only 7 signals are required. The
following figure shows the RMII architecture. Note that DCE mode is not supported for RMII mode and RMII is valid
only for full duplex operation.
Figure 8-12. RMII Interface (DTE Mode Only)
Rev: 063008
________________________________________________ DS33X162/X161/X82/X81/X42/X41/X11/W41/W11
DS33X MAC - RMII
Transmit
Receive
MAC
MAC
TXD[1:0]
TX_EN
REF_CLK
RXD[1:0]
CRS_DV
PHY RMII to MII
RXD[3:0]
TXD[3:0]
TX_ERR
TX_CLK
RX_DV
RX_ER
RX_CLK
CRS
TX_EN
66 of 375
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