PXN20RM Datasheet, PDF (110/1376 Pages) Freescale Semiconductor, Inc – PXN20 Microcontroller

Signal Description
3.4.15.6 Nexus Interface Supply Input
V_DDENEX
V_DDENEX is the 3.3 V (nominal) supply input for the Nexus Debug Interface. This supply is used only on
the 256-pin package.
3.4.15.7 Clock Synthesizer Power Input
V_DDSYN
V_DDSYN is the is the power supply input for the FMPLL.
3.4.15.8 Voltage Regulator Control Voltage
V_RC
V_RC is the 3.3 V or 5 V (nominal) input power supply.
3.4.15.9 Voltage Regulator Control Output
V_RCCTL
V_RCCTL is the current control for external NPN transistor.
3.4.15.10 Supply
V_RCSEL
V_RCSEL is the input power supply range select.
• V_RCSEL = 0: 3.3 V supplied external (3.3 V mode)
• V_RCSEL = 1: 3.3 V internal voltage regulator (5 V mode)
3.4.15.11 Analog High Voltage Reference
V_RH
V_RH is the analog high voltage reference.
3.4.15.12 Analog Low Voltage Reference
V_RL
V_RL is the analog low voltage reference.
3.4.15.13 Ground
V_SS
V_SS is the ground reference input.
3.4.15.14 Analog Ground
V_SSA
V_SSA is the analog ground reference input.
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PXN20 Microcontroller Reference Manual, Rev. 1
Freescale Semiconductor