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Description
VBUS
USD+
USD-
DRVcc
DRVss
PUPD
USBXTAL
USBEXTAL
Function
USB cable connection monitor pin
USB data I/O pin
USB data I/O pin
Power supply pin for USB built-in
transceiver
Ground pin for USB built-in
transceiver
Pull-up control pin
USB clock pin
USB clock pin
Microcontroller
Pin Number
118
113
114
112
115
117
107 (N/C)
109
Table 6-6: USB module 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.
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
00:30:55:07:00:01 to 00:30:55:07:FF:FF. If there is a problem with the pre-programmed MAC address, the
demonstration code will default to 00:30:55:07:00:00. The MAC address is programmed into location 0x80107FF8. All
demonstration programs display the last three 8-bit fields on the LCD at startup for verification purposes.
13
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