Verdin Development Board Errata
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Errata #8:
HAR-8290 – The LED status signals of the on-module Ethernet PHY
are swapped
Affected Version:
Verdin Development Board V1.0B
Verdin Development Board V1.1A
Fixed in:
TBD
8.1
Customer impact
The roles of the Ethernet link and activity LEDs are swapped (the wrong Ethernet LED is turned on
or is blinking).
8.2
Description
The KSZ9131 Ethernet PHY on the Verdin modules has two LED outputs (ETH_1_LED_1 and
ETH_1_LED_2) used to indicate the link and activity statuses on the bus. These LEDs are available
on pin 235 and 237 of the module edge connector, respectively. ETH_1_LED_1 (pin 235) is
intended to indicate the activity status, while ETH_1_LED_2 (pin 237) is intended to indicate the link
status.
On the PCB versions 1.0 and 1.1, these two signals are swapped. In the next revision of the carrier
board PCB, the connections will be corrected. In the Verdin Development Board datasheet, the
corrected connections are shown.
8.3
Workaround
For custom carrier board designs, the correct LED connections should be implemented.
A potential workaround could be flipping the roles and behavior of the LED outputs of the on-
module Ethernet PHY in software. However, this is not supported by the related driver.
