PCM-065/phyCORE-i.MX8X System on Module
L-864e.A1
© PHYTEC America LLC, 2021
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11
Peripheral Interfaces
The following subsections detail each of the peripheral interfaces supported on the phyCORE-i.MX8X.
11.1
ADC
The phyCORE-i.MX8X SOM brings out 6x ADC inputs from the 12-bit, 6 channel ADC module on the processor.
The reference voltage is connected directly to 1.8V on the module.
Table 45. ADC Connections at the phyCORE-Connector
X1 Pin #
SOM Signal
Type
Level
Processor Ball
Description
D59
X_ADC_IN0
I
1.8V
U35
ADC In 0
D58
X_ADC_IN1
I
1.8V
U33
ADC In 1
D63
X_ADC_IN2
I
1.8V
V32
ADC In 2
D62
X_ADC_IN3
I
1.8V
V30
ADC In 3
D61
X_ADC_IN4
I
1.8V
W29
ADC In 4
D64
X_ADC_IN5
I
1.8V
V34
ADC In 5
11.2
FlexTimer
The FlexTimer provides input signal capture and PWM support.
Table 46. FlexTimer Signals
X1 Pin #
Processor Signal
SOM Signal
Type Level
Processor Ball
Description
A50
FTM_CH0
X_UART2_RX
I/O
1.8V
AD34
FlexTimer
Channel 0
A51
FTM_CH1
X_UART2_TX
I/O
1.8V
AC35
FlexTimer
Channel 1
11.3
GPIO
The General-Purpose Input/Output interface provides pins that can be configured as either inputs or outputs.
Many of the signals available at the phyCORE-Connector can be multiplexed as GPIOs. The i.MX8X processor
supports six independent GPIO modules: GPIO0, GPIO1, GPIO2, GPIO3, GPIO4, and GPIO5 each of which
support 32 bits of IO. The following table lists the number of GPIOs available from each of these GPIO modules
at the phyCORE-Connector, with a total of 106 GPIOs available depending on the multiplexing configuration.
Table 47. Total Available GPIO
GPIO Module
Number of GPIO Available
GPIO0
28
GPIO1
32
GPIO2
2
GPIO3
25
GPIO4
17
GPIO5
2
Total
106
Many of the GPIOs are multiplexed with other interfaces, some of which connect to on-board circuits. Review
the phyCORE-i.MX8X SOM schematic when using these GPIOs to check for pull-up and pull-down resistors,
connected devices, etc.
