Preliminary UG-XXXX
EVAL-ADIN1110EBZ User Guide
Rev. PrA | Page 6 of 23
CFG[3:0]
1
Operating Mode
2
Description
0110
Enable PHY Frame Generator/Checker
The PHY Frame Generator sends 10,000 frames and checks for number of
frames received and potential errors. Output is shown on UART. If there is an
error – the red LED turns on.
0111
Enable PHY MAC Interface Remote
Loopback, MSE reading enabled
The PHY is set in MAC Interface Remote loopback mode, and in parallel MSE
readings are shown on UART. Link LED is also enabled.
1000
TCP/IP Stack & Web Server, DHCP client,
MAC Addr2
The use of this mode is depicted in Figure 11. In this mode, the TCP/IP stack can
be managed via UART using dynamic IP address allocation. The media
converter board is then used to convert 10BASE-T1L to 10BASE-T ethernet, for
which common web browsers can be used to access the associated
information. MAC address 2 is used.
1001
TCP/IP Stack & Web Server, Fixed IP,
MAC Addr2
This is a similar mode to the previous one except fixed IP address allocation is
used. MAC address 2 is used.
1010
Not defined
The ADuCM4050 makes no autonomous attempt to interact with the
ADIN1110 MAC-PHY.
1011
Not defined
The ADuCM4050 makes no autonomous attempt to interact with the
ADIN1110 MAC-PHY.
1100
Enable uC Frame Generator/Checker,
MAC Addr2
The ADuCM4050 generates 100 frames (66 bytes length) and checks for
number of frames received and potential errors. Output is shown on UART. If
there is an error – the red LED turns on. It uses generic SPI protocol with CRC
mode enabled.
1101
Enable uC Remote Loopback,
MAC Addr2
Whatever frame is received from the MAC is transmitted back to the MAC. It
uses the generic SPI protocol with CRC mode enabled.
1110
Not defined
The ADuCM4050 makes no autonomous attempt to interact with the
ADIN1110 MAC-PHY.
1111
Reset MAC-PHY and enable LED
Reset the ADIN1110 and then enable LED.
1
0 = switch is OFF (pin is pulled high), 1 = switch is ON (pin is pulled low).
2
The UART terminal can be used to interact with the board for all of the ADuCM4050 configuration switch settings.
ADuCM4050 MSE Result
As listed in Table 5, when CFG[3:0] = [OFF, ON, ON, ON], the
MSE value of the link is continuously written to the UART and
can be read using Termite RS232 terminal (or equivalent)
software (assuming there is a valid link in place between two
link partners).
The Mean Square Error (MSE) result returned indicates link
quality. It is in fact the reciprocal of SNR. To meet the 1e-9 Bit
Error Rate (BER) mandated by the IEEE802.3cg Standard
(clause 146.5.5.1), an SNR of 20.05dB (i.e. MSE of -20.05dB) is
required. So a result equal to, or below -20dB is considered
compliant with the Standard.
ON-BOARD LEDS
ADuCM4050 LEDs
There are four LEDs associated with the ADuCM4050 –
labelled “uC0” to “uC3”. These are green, red, orange and blue
respectively. All LEDs blink once upon reset and powerup.
•
The orange LED blinks every 250ms (acting as a
heartbeat signal).
•
The red LED indicates a fault/error has occurred.
•
The green LED is on permanently with the exception
of the TCP/IP modes, whereby the green LED blinks
until the IP address is assigned from the DHCP
server, after which point it stays on. If the selected
mode is fixed IP, the green LED is always on.
•
The blue LED has no current programmed use-case.
Non-ADuCM4050 LEDS
ADIN1110 LED pin
There is one LED pin (pin name “LED”) on the ADIN1110. The
LED can be used to indicate link status. By default, the LED is
disabled (default behaviour is subject to change) and can be
enabled by setting the LED enable bit (LED_EN) within the
LED control register (see the ADIN1110 data sheet). The
associated yellow LED on the board (DS1) is labelled “Activity”.
The ADuCM4050 has been programmed to enable the LED
and cause it to illuminate when a link is established. These LED
configuration commands are written to the ADIN1110 in all of
the configurations listed in Table 5 with the exception of the
“Not defined” configurations. In the “Not defined”
configuration, the ADuCM4050 makes no autonomous attempt
to interact with the ADIN1110 MAC-PHY. See the Evaluation
Board Usage Options section for more details on the
ADuCM4050 configuration modes.
ADIN1110 LINK_ST pin
The Link Status output (LINK_ST) is active high and indicates
whether a valid link has been established. The associated green
LED on the board (DS6) is labelled “Link”.
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