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NXP Semiconductors
AH1721
SJA1105SMBEVM UM
AH1721
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2018. All rights reserved.
User Manual
Rev. 1.00
— 16 July 2018
9 of 35
4.7 LEDs
Fig 4.
LEDs and Connectors
Table 3.
SJA1105SMBEVM LEDs overview
LED label Color
Description:
D1
red
Indicates if the reset line for the on-
board μC is active.
D2, D4,
D5, D15,
D16
green
link-up indication LEDs for the 100BASE-T1 ethernet ports. Each LED
is controlled by the on-board uC. and is set/cleared by the
LinkUp/LinkFail interrupt of the associated port’s PHY.
D2: Port A1
D4: Port B0
D5: Port B1
D15: Port B2
D16: Port B3
J4-L, J4-R L=green
R=yellow
LEDs integrated in the FE connector J4
L = Link; controlled by the FE-PHY U10 LEDLINK output. By default
(Mode 1) the LED is on when there is a good link on the port.
R = Activity; controlled by the FE-PHY U10 LEDACTCOL output. By
default (Mode 1) the LED is on during activity on either TX or RX.