Phytec phyCORE-i.MX 6, Руководство по оборудованию

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phyCORE
®
-i.MX 6 [PCM-058]
22 ©
PHYTEC Messtechnik GmbH 2016 L-808e_2
4 Power
The phyCORE-i.MX 6 operates off of a single power supply voltage.
The following sections of this chapter discuss the primary power pins on the
phyCORE-Connector X1 in detail.
4.1 Primary System Power (VDD_3V3)
The phyCORE-i.MX 6 operates off of a primary voltage supply with a nominal value of
+3.3 V. On-board switching regulators generate the 2.5 V, 1.375 V, 1.5 V, 0.75 V, 1.2 V and
3 V voltage supplies required by the i.MX 6 MCU and on-board components from the
primary 3.3 V supplied to the SOM.
For proper operation the phyCORE-i.MX 6 must be supplied with a voltage source of
3.3 V
±
5 % with 2.5 A load at the VCC pins on the phyCORE-Connector X1.
VDD_3V3:
X1 A1, A2, A3, A4, B1, B2, B3, B4
Connect all +3.3 V VCC input pins to your power supply and at least the matching number of
GND pins.
Corresponding GND: X1
A6, A11, A16, A21, B6, B12, B17, B22
Please refer to
section 2 for information on additional GND Pins located at the
phyCORE-Connector X1.
Caution!
As a general design rule we recommend connecting all GND pins neighboring signals which
are being used in the application circuitry. For maximum EMI performance all GND pins
should be connected to a solid ground plane.
4.2 Power Management IC (PMIC) (U16)
The phyCORE-i.MX 6 provides an on-board Power Management IC (PMIC) at position U16 to
generate different voltages required by the microcontroller and the on-board components.
Figure 8 presents a graphical depiction of the powering scheme.
The PMIC supports many functions like on-chip RTC and different power management
functionalities like dynamic voltage control, different low power modes and regulator
supervision. It is connected to the i.MX 6 via the on-board I
2
C bus (I2C3). The I
2
C address
of the PMIC is 0x58 (page 0 and 1) and 0x59 (page 2 and 3).