Mdio Interface Dongle; Configuration Pins Setup - Analog Devices EVAL-ADIN1300FMCZ User Manual

UG-1635

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
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
Using the MDIO interface dongle allows interaction with the
ADIN1300 device via the Ethernet PHY software GUI running
on the PC.
P5
EVAL-ADIN1300FMCZ
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.
Table 5. EVAL-ADIN1300FMCZ Configuration Settings
Configuration Option
PHY Address = 0b00000
MDIX Mode Configuration
microcontroller and an
facing up (see Figure 4).
HEADER
ADuCM3029
MDIO
INTERFACE
DONGLE
USB
Relevant Pins
RXD_3/PHYAD_3
RXD_2/PHYAD_2
RXD_1/PHYAD_1
RXD_0/PHYAD_0
GP_CLK/RX_ER/MDIX_MODE
Rev. 0 | Page 6 of 30
EVAL-ADIN1300FMCZ
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
S5
TOP
Figure 5. Overview of MDIO Interface Dongle

CONFIGURATION PINS SETUP

The EVAL-ADIN1300FMCZ default configuration and
configuration options are detailed in Table 5. The
configuration settings can be changed by manipulating the
resistors listed in the right column. See the
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.
Resistor and Switch Settings
R22, R29, R31, R37 = DNI.
R23, R30, R32, R38 = DNI.
Using internal pull-down resistors.
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).
User Guide
S6
ADuCM3029
ADIN1300
ADIN1300 data
USB