A x e l H a r d w a r e M a n u a l
v . 1 . 0 . 4
5.1.3
Power rails and related signals
The following list describes in detail power rails and power
related signals.
Please note that PMIC regulators ouput
voltages can be changed only if explicitly allowed.
●
2V8-4V5: this is external main power rail. Voltage range
is 2.8 - 4.5V
●
PMIC_CELL: PMIC's coin cell supply input/output
●
RTC_VBAT: this rail is connected to pin 6 of Maxim
D RTC
●
NVCC_CSI_EXT: this rail powers MX6's NVCC_CSI
domain
●
NVCC_EIM_EXT: this rail powers MX6's NVCC_EIM0,
NVCC_EIM1 and NVCC_EIM2 domains
●
NVCC_SD3_EXT: this rail powers MX6's NVCC_SD3
domain
●
NVCC_LCD_EXT: this rail powers MX6's NVCC_LCD
domain
●
NVCC_AXEL_I/O_3.3V/1.8V: this output signal is used to
indicate when carrier board's circuitry interfacing
AXEL's I/Os has to be powered up
●
VGEN1: PMIC's VGEN1 regulator output; this regulator
is not used by any AXEL's internal load. Output voltage
can be selected by user.
●
VGEN2: PMIC's VGEN2 regulator output; this regulator
is not used by any AXEL's internal load. Output voltage
can be selected by user.
●
VGEN4_1V8: PMIC's VGEN4 regulator output; output
voltage (1.8V) must not be altered. Up to 150mA can be
drawn.
●
VGEN6: PMIC's VGEN6 regulator output; this regulator
is not used by any AXEL's internal load. Output voltage
can be selected by user.
●
SW4_xV/1.8V: PMIC's SW4 regulator output voltage
(1.8V). This voltage must not be altered. Up to 500mA
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