Digi ConnectCore, Hardware Reference Manual

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ConnectCore f or i.MX51
© 2011 Digi International, Inc. 135
I/O DC Parameters
This section includes the DC parameters of the following I/O types:

General Purpose I/O and High-Speed General Purpose I/O (GPIOxx/HSGPIOxx)

Low Voltage I/O (LVIO)

Ultra High Voltage I/O (UHVIOxx)

WLAN

PMIC_GPO, PMIC_PWRON, PMIC_STDBY, PMIC_INT, PMIC_PWDRV, PMIC_SE,
PMIC_CHRGLED, and PMIC_LED

Ethernet (ETH)

Analog RGB

ADC subsystem (ADIN)

Digital and analog USB (DIG_USB, AN)USB)
The I/O type associated to each I/O signal of the module is shown in the paragraph “Module
Pinout” of Chapter 1.
The following table shows the General Purpose I/O and High-Speed General Purpose I/O
(GPIOxx/HSGPIOxx) DC parameters. The “xx” reference signifies the supply voltage level.
Parameter Symbol Min Typ Max Unit
Supply Voltage VDD
xx = 18
xx = 27
xx = 33
1.65
2.5
3.0
1.8
2.775
3.3
1.95
3.1
3.6
V
High-level output voltage Voh
(Vol USB) VDD-0.15
VDD-0.43 -
- VDD+0.3
VDD+0.3
V
Low-level output voltage Vol
(Vol USB) -
-
--
0.15
0.43
V
High-level output current Ioh
- Low drive
- Medium drive
- High drive
- Max drive
-1.9
-3.7
-5.2
-5.6
- -
mA
Low-level output current Iol
- Low drive
- Medium drive
- High drive
- Max drive
1.9
3.7
5.2
5.6
- -
mA
High-level input voltage VIH 0.7 x VDD - VDD V
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