Analog Devices EVAL-ADIN1300, User Manual

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UG-1635 EVAL-ADIN1300FMCZ User Guide
Rev. 0 | Page 6 of 30
MDIO INTERFACE DONGLE
The MDIO interface dongle is a separate board included in the
EVAL-ADIN1300FMCZ evaluation kit. The MDIO interface
dongle has an on-board,
ADuCM3029 microcontroller and an
FDTI Chip FT232RQ, universal asynchronous receive transmitter
(UART) to USB interface. The schematic for this hardware is
shown in Figure 41. When using the MDIO interface dongle,
connect the USB cable to the MDIO interface dongle first,
then connect the MDIO interface dongle to the EVAL-
ADIN1300FMCZ with the
ADuCM3029 facing up (see Figure 4).
Using the MDIO interface dongle allows interaction with the
ADIN1300 device via the Ethernet PHY software GUI running
on the PC.
P5
USB
HEADER
MDIO
INTERFACE
DONGLE
EVAL-ADIN1300FMCZ
ADuCM3029
2141
9-
00
5
Figure 4. MDIO Interface Dongle Connection to the
USB Cable and EVAL-ADIN1300FMCZ
There are two LEDs on the MDIO interface dongle, DS7 and
DS8. When the powered USB cable is initially connected to the
MDIO interface dongle, DS8 illuminates. When the Ethernet
PHY software GUI establishes communication with the EVAL-
ADIN1300FMCZ, DS7 and DS8 flash. The LEDs continue to
flash while the GUI is active and the EVAL-ADIN1300FMCZ is
selected as the local board within the GUI.
The MDIO interface dongle has two push-button switches on
the underside of the board, S5 and S6, as shown in Figure 5.
S5 is for download and reboot purposes. S6 is used to reset the
on-board
ADuCM3029 .
BOTTOM
TOP
S5 S6
214
19-
006
USB
ADuCM3029
Figure 5. Overview of MDIO Interface Dongle
CONFIGURATION PINS SETUP
The EVAL-ADIN1300FMCZ default configuration and
configuration options are detailed in Table 5. The
ADIN1300
configuration settings can be changed by manipulating the
resistors listed in the right column. See the
ADIN1300 data
sheet for more details on all available configuration options.
Figure 6 shows the location of the resistors on the underside of
the printed circuit board (PCB) of the EVAL-ADIN1300FMCZ.
The speed configuration is configured via two rotary switches,
S3 and S4, and the media defined interface configuration is
controlled using the S9 switch. Table 5 lists the different switch
configurations available.
Table 5. EVAL-ADIN1300FMCZ Configuration Settings
Configuration Option Relevant Pins Resistor and Switch Settings
PHY Address = 0b00000 RXD_3/PHYAD_3 R22, R29, R31, R37 = DNI.
RXD_2/PHYAD_2 R23, R30, R32, R38 = DNI.
RXD_1/PHYAD_1 Using internal pull-down resistors.
RXD_0/PHYAD_0
MDIX Mode Configuration GP_CLK/RX_ER/MDIX_MODE S9 Position1, Mode 1, manual MDI.
S9 Position 2, Mode 2, manual MDIX.
S9 Position 3, Mode 3, prefer MDIX.
S9 Position 4, Mode 4, prefer MDI (default).