Part Number: AM4376
Hello
I'm using the AM4376 processor in our design. My GPIO bank power supplies are mixed between 3.3VDC and 1.8VDC. Is it acceptable to have mixed I/O supplies for the GPIO banks and ignore the warnings as long as the GPIOs are used with logic levels that correspond to the supply voltage? The example below is from our design where the GPIO bank 0 is powered by BDDSHV9 (3.3V) BDDSHV3 (1.8V) and BDDSHV6 (3.3V). so I'm using GPIOs powered by the BDDSHV9 and BDDSHV6 at the 3.3VDC logic levels and the GPIOs powered by the BDDSHV3 at the 1.8VDC logic levels.
| # | Design Signal Pad Name |
PUPD State During HHV |
PUPD State After HHV |
IO Power Supply Name |
IO Power Setting |
Required Voltage Level |
Ball Name |
Selected Mode Number | Mode Interface Name |
Mode Signal Name |
User Requirement Name |
| 1 | gpmc_clk | PD | PD | VDDSHV9 | 3.3V | 1.8V | A12 | 9 | GPIO0 | gpio0[4] | MyGPIO0 |
| 2 | spi0_cs1 | OFF | PU | VDDSHV3 | 1.8V | 1.8V | R25 | 7 | GPIO0 | gpio0[6] | MyGPIO0 |
| 3 | eCAP0_in_PWM0_out | OFF | PD | VDDSHV3 | 1.8V | 1.8V | G24 | 7 | GPIO0 | gpio0[7] | MyGPIO0 |
| 4 | dss_data12 | OFF | OFF | VDDSHV6 | 3.3V | 1.8V | C19 | 7 | GPIO0 | gpio0[8] | MyGPIO0 |
| 5 | dss_data13 | OFF | OFF | VDDSHV6 | 3.3V | 1.8V | D19 | 7 | GPIO0 | gpio0[9] | MyGPIO0 |
| 6 | dss_data14 | OFF | OFF | VDDSHV6 | 3.3V | 1.8V | C17 | 7 | GPIO0 | gpio0[10] | MyGPIO0 |
regards
Khalid
