Ethernet - Renesas RX Family User Manual

Mode No.
USB Host
USB Function / device/ slave
USB On the Go (OTG)

6.10. Ethernet

The Ethernet module conforms to the Ethernet or IEEE802.3 media access control (MAC) standard. Ethernet controller is
connected to the direct memory access controller for Ethernet controller (E-DMAC) and carries out high-speed data
transfer to and from the memory. In addition, Ethernet controller is connected to DP83640 physical receiver chip enabling
it to perform transmission and reception of Ethernet frames. Note that the chip is configured in Reduced Pin-count mode
(RMII).
The Ethernet PHY is configured at power-on reset for Auto-Negotiation, advertising 10Base-T and 100Base-TX in both
full and half-duplex modes. Each unit is pre-programmed with a unique IEEE assigned MAC address ranging from
00:30:55:08:00:01 to 00:30:55:08:FF:FF. If there is a problem with the pre-programmed MAC address, the demonstration
code will default to 00:30:55:08:00:00. The MAC address programmed into the part at the factory is shown on the back
of the board.
Table 6-8 contains details of the signal descriptions and pin connections. All connections to the MCU are direct.
USB DIP Switch Settings (SW6)
SW6.1
OFF
ON
OFF
Table 6-7: USB DIP Switch SW6 settings
Net Name Function
ETH_CLK Transmit/Receive Clock
TX_EN Transmit Enable
RMII_TXD0 Transmit Data, Bit 1
RMII_TXD1 Transmit Data, Bit 2
RMII_MAS Master Mode (high)
RX_ER Receive Error
RMII_RXD0 Receive Data, Bit 1
RMII_RXD1 Receive Data, Bit 2
CRS Carrier Sense
MDC Management Data Clock
MDIO Management data I/O
ETH-IRQ IEEE1588 signalling pin
Table 6-8: Ethernet Module Connections
14
SW6.2 SW6.3
OFF ON
OFF OFF
ON OFF
MCU Pin
Number
58
56
55
54
NC
57
59
61
53
66
67
98
SW6.4
OFF
ON
OFF