Table 11. LEDs available on front-panel of board chassis (continued)
Reference
designator
LED color
LED name
Description (when LED is ON)
D48
Green/Yellow
SWP1
• YELLOW: Link is 1000BaseT
Available on the chassis front panel.
D49
Green/Yellow
SWP2
D50
Green/Yellow
SWP3
D51
Green/Yellow
MAC1
9.1 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 12. LED array functions
LED
Reset sequencer state
Normal (after 2 seconds)
User-defined (if register
CTL[1] (LED) = 1)
M3
Not applicable
M[3:0] reflect contents of
the LED register
M2
Not applicable
M1
Not applicable
M0
Heartbeat: Clock monitor
Table 13. 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
Table continues on the next page...
NXP Semiconductors
LEDs
QorIQ LS1028A Reference Design Board Getting Started Guide, Rev. 0, 2/2019
User's Guide
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