Datasheet
Electrical characteristics
i.MX 8QuadXPlus and 8DualXPlus Automotive and Infotainment Applications Processors, Rev. 0, 11/2018
PRELIMINARYNXP Semiconductors 41
4.7.1 GPIO output buffer impedance
4.7.1.1 Dual-voltage GPIO output buffer impedance
4.7.1.2 1.8 V GPIO output buffer drive strength
The following table shows the GPIO output buffer drive strength (OVDD 1.8 V).
4.7.1.3 3.3 V GPIO output buffer drive strength
The following table shows the GPIO output buffer drive strength (OVDD 3.3 V).
Table 34. Dual-voltage GPIO output drive selection truth table
Drive strength
1
1
As programmed in the associated IOMUX (PDRV field) register.
Description
1 Output is configured in Low Drive mode recommended for SD standard (1.8 V mode).
0 Output is configured in High Drive mode recommended for SD standard (3.3 V mode) and MMC standard
(1.8 V/3.3 V modes).
Table 35. GPIO output buffer average drive strength (OVDD 1.8 V)
Parameter Symbol Drive Strength
1
1
As programmed in the associated IOMUX (DSE field) register.
Typ Value Unit
Output drive
strength
Rdrv
000 0.1 mA
001
010 2
011
100 4
101
Table 36. GPIO output buffer average drive strength (OVDD 3.3 V)
Parameter Symbol Drive Strength
1
1
As programmed in the associated IOMUX (DSE field) register.
Typ Value Unit
Output drive
strength
Rdrv
00 0.1 mA
01
10 2
11