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2.15 JTAG port
The JTAG port provides access to the processor using a standard 10-pin Arm Cortex JTAG connector for debugging purposes.
The following figure shows the LS1028ARDB JTAG architecture.
LS1028A
TMS
TBSCAN_EN_B
ARM
J TAG
Header
PIN-M-180-1.27mm
TCK
TDO
TDI
100
W
1/4W
J TAG_RST_B
DUT_TMS
DUT_TCK
DUT_TDO
DUT_TDI
1V8
1V8
10K
10K
(4x)
1V8 1V8 1V8
1V8
8
6
9
7
5
3
4
2
1
10
to CPLD
1.8V
OVDD
(1.8V)
Figure 19. JTAG architecture
2.16 eSDHC interface
The LS1028A processor supports two enhanced secured digital host controllers (eSDHC): eSDHC1 and eSDHC2. The LS1043
interposer can support only one SDHC controller and it is connected to SDHC1.
The figure below shows the eSDHC1 and eSDHC2 connections in the LS1028ARDB.
LS1028ARDB Functional Description
QorIQ LS1028A Reference Design Board Reference Manual, Rev. b, 11/2018
40
COMPANY CONFIDENTIAL
NXP Semiconductors
Summary of Contents for QorIQ LS1028A
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