NXP Semiconductors QorIQ LS1028A, Reference Manual, Page: 56 / 112

Table 32. LEDs available on front-panel of board chassis (continued)
Reference
designator LED color LED name Description (when LED is ON)
D49 Green/Yellow SWP2
Available on the chassis front panel.
D50 Green/Yellow SWP3
D51 Green/Yellow MAC1
3.2.1 Multi-status LEDs
The board includes four multi-status LEDs that indicate hardware activity; however, software can override these LEDs to use them
for debugging purposes. The table below describes the functions of the multi-status LED arrays.
Table 33. LED array functions
LED Reset sequencer state Normal (after 2 seconds) User-defined (if register
CTL[1] (LED) = 1)
M3
(see Table 34. Reset sequencer
state on page 56)
Not applicable M[3:0] reflect contents of
the LED register
M2 Not applicable
M1 Not applicable
M0 Heartbeat: Clock monitor
Table 34. Reset sequencer state
State LED: M[3:0] Description
IDLE 0000 = 0x0 Waiting for initial reset events
SAMPLE 0001 = 0x1 Sample configuration switches
RECONFIG 0010 = 0x2 Update configuration from registers
Reserved 0011 = 0x3 Reserved
Reserved 0100 = 0x4 Reserved
CLOCK_LOCK 0101 = 0x5 Wait for clock PLLs to stabilize
RELEASE_ALL 0110 = 0x6 Release all hardware resets except DUT
RELEASE_DUT 0111 = 0x7 Release DUT from reset
STABLE 1000 = 0x8 Reset sequencing complete. Wait for reset events.
RESET_REQ 1001 = 0x9 Start reset due to (cause): DUT HRESET_REQ_B
PORESET 1010 = 0xA Start reset due to (cause): JTAG HRESET_B (PORESET_B)
RST_WATCH 1011 = 0xB Start reset due to (cause): Watchdog timeout
Table continues on the next page...
Board Configuration and Debug Support
QorIQ LS1028A Reference Design Board Reference Manual, Rev. b, 11/2018
56
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