NOTE
The LX2160ARDB power up voltage sequence diagram
(LX2160ARDB Reference Manual) lists the power supplies
assigned to each tier.
Table 2-20. Power Sequencer state
State LED: M[7:4] Description
IDLE 1110 = 0xE Waiting for power-on events (for example, switch)
WAIT_ATX 0000 = 0x0 Waiting for ATX PSU to report stable
EN_TIER1 0001 = 0x1 Enable tier 1 PSUs, wait for tier 1 power-good reports
EN_TIER2 0010 = 0x2 Enable tier 2 PSUs, wait for tier 2 power-good reports
EN_TIER3 0011 = 0x3 Enable tier 3 PSUs, wait for tier 3 power-good reports
EN_TIER4 0100 = 0x4 Enable tier 4 PSUs, wait for tier 4 power-good reports
WAIT_ALL 0110 = 0x6 Wait for all unmanaged PSUs to report power-good
PG_FAIL 0111 = 0x7 All power supplies were not stable within 1800*30 ns after the last
power was enabled
STABLE 1000 = 0x8 Power sequencing complete. Wait for power-off events.
DISABLE 1101 = 0xD Disable tiers 4..1 PSUs, in that order, with 1 ms delay
FAULT 1111 = 0xF Fault occurred. Power supplies were shut down due to thermal
faults or die rotation errors.
Table 2-21. Reset Sequencer state
State LED: M[3:0] Description
IDLE 0000 = 0x0 Waiting for initial reset events
RECONFIG 0010 = 0x2 Update configuration from registers
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 DUT RESET_REQ_B
PORESET 1010 = 0xA Start reset due to JTAG_RST_B
RST_WATCH 1011 = 0xB Start reset due to watchdog timeout
RST_BY_REG 1100 = 0xC Start reset due to setting register bit RST_CTL[RST] = 1
RST_BY_SW 1101 = 0xD Start reset due to pushbutton switch
RECONFIG 1110 = 0xE Start reset due to reconfig request via RCFG[GO] = 1
POST_RST 1111 = 0xF Wait for reset requests to clear
Chapter 2 LX2160ARDB Functional Description
QorIQ LX2160A Reference Design Board Reference Manual, Rev. 0, 09/2018
NXP Semiconductors 55
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