Freescale Semiconductor QorIQ T1023, User Manual, Page: 30 / 36

Table 2-11. Headers on T1023RDB platform (continued)
Reference
designators
Used for Setting
J18 DCDC1_3V3 1-2: Turn OFF PCIe 2 and ETH2 3.3 V power, if 12 V adapter is not present.
[Default]
2-3: Always ON
J19 LDO_2V1 1-2: Turn OFF AQR105 2.1 V power, if 12 V adapter is not present.
2-3: Always ON [Default]
J20 DCDC_5V0 1-2: Turn OFF USB power, if 12 V adapter is not present.
2-3: Always ON [Default]
J21 DCDC_V85 1-2 Turn OFF AQR105 PHY power supply, if 12 V adapter is not present.
2-3: Always ON [Default]
J23 VPA 1-2: Always turned ON for PCIe1 card PA power [Default]
2-3: Turn OFF PCIe 1 card PA power
J26 VPA_PCIE2 2-3: Turn OFF PCIe 2 PA power, if 12 V adapter not present.
1-2 Always ON [Default]
J25 PCIe1 PA power
setting 1-2: 5 V, CUS239 [Default]
3-4: 4.5 V, CUS260
5-6: 3.5 V, CUS238
7-8: 3.3 V, CUS240
J27 PCIe2 PA power
setting 1-2: 5 V, CUS239 [Default]
3-4: 4.5 V, CUS260
5-6: 3.5 V, CUS238
7-8: 3.3 V, CUS240
J28 JTAG TRST By default it is installed; but needs to uninstall it for JTAG connectivity, when
board is set to NOR boot and RCW is not programmed to NOR.
2.24.3 Push buttons
The following table describes how the push buttons are used on the T1023RDB platform.
Table 2-12. Push buttons on T1023RDB platform
Reference designators Used for Notes
SW4 Reset Used for resetting the whole board
Connectors, Headers, Push buttons, and LEDs
QorIQ T1023 Reference Design Board User Guide, Rev. 0, 08/2015
30 Freescale Semiconductor, Inc.