User`s manual

14
USB DIP Switch Settings (SW6)
Mode No. SW6.1 SW6.2 SW6.3 SW6.4
USB Host OFF OFF
ON
OFF
USB Function / device/ slave ON
OFF OFF
ON
USB On the Go (OTG) OFF ON
OFF OFF
Table 6-7: USB DIP Switch SW6 settings
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.
Net Name Function MCU Pin
Number
ETH_CLK Transmit/Receive Clock 58
TX_EN Transmit Enable 56
RMII_TXD0 Transmit Data, Bit 1 55
RMII_TXD1 Transmit Data, Bit 2 54
RMII_MAS Master Mode (high) NC
RX_ER Receive Error 57
RMII_RXD0 Receive Data, Bit 1 59
RMII_RXD1 Receive Data, Bit 2 61
CRS Carrier Sense 53
MDC Management Data Clock 66
MDIO Management data I/O 67
ETH-IRQ IEEE1588 signalling pin 98
Table 6-8: Ethernet Module Connections