Table 4. Connector settings (continued)
Connector
Description
Connector type
Typical connection
J10
DisplayPort
20-pin DisplayPort
connector
Connects display devices. Available on the
chassis back panel.
J15
QSGMII Ethernet ports
Four 2x8-pin RJ45
connectors
Four 1GbE Ethernet ports from TSN switch.
Available on the chassis back panel.
J14
SGMII Ethernet port
1x8-pin RJ45 connector
1GbE from ENETC SGMII MAC interface
J16
M.2 Key E
2x32-pin card slot
Supports a Wi-Fi capable M.2 Type E card
J18
M.2 Key E
2x32-pin card slot
Supports a Wi-Fi capable M.2 Type E card
J20
M.2 Key B
2x38-pin card slot
Supports an SSD capable M.2 Type B card
J29, J30
mikroBUS1
Two 8-pin header
Allows connection to mikro-click modules
J31, J32
mikroBUS2
Two 8-pin header
Allows connection to mikro-click modules
J34
LINE_OUT
1x3-pin header
SAI4 - Audio jack connector
7 Jumpers
Jumpers (shorting headers) are used to select some options, which either do not change often or involve power conduction.
on page 5 shows the jumpers available on the board. The table below describes the factory default settings for the
LS1028ARDB jumpers.
Table 5. Default jumper settings
Jumper
Type
Name/function
Description
J6
1x2-pin connector
TA_BB_EN enable
Open: TA_BB_TMP_DETECT_B pin is High
(default value)
Shorted: TA_BB_TMP_DETECT_B pin is Low
J7
1x2-pin connector
VBAT_EN
Open: Disable battery backup for TA_BB_VDD
(default value)
Shorted: Enable battery backup for TA_BB_VDD
J27
1x2-pin connector
PROG_MTR voltage control (for
NXP use only)
Open: PROG_MTR pin is powered off (default
value)
Shorted: PROG_MTR pin is powered by OVDD
(1.8 V)
J28
1x2-pin connector
TA_PROG_SFP voltage control
(for NXP use only)
Open: TA_PROG_SFP pin is powered off
(default value)
Shorted: TA_PROG_SFP pin is powered by
OVDD (1.8 V)
Most of these jumpers are installed during assembly, and do not require any changes.
NOTE
NXP Semiconductors
Jumpers
QorIQ LS1028A Reference Design Board Getting Started Guide, Rev. 0, 2/2019
User's Guide
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