The considerations for power rails requirements consist of:
Table 2-1 shows the basic power requirements of this system.
|Sequence||Power Supply||Device||Nominal Rating||Max Current [mA]|
|4-up, 1-down||VDD_CORE||AM335x||1.1 V ± 4%||400|
|4-up, 1-down||VDD_MPU||AM335x||1.325 V ± 4%||1000|
|1-up, 4-down||VIO||WL1837MOD||1.62 ~ 1.95||< 400|
|1-up, 4-down||VDDS_SRAM_MPU_BB, VDDS_SRAM_CORE_BG, VDDA_ADC, VDDS_PLL_DDR, VDDS_PLL_MPU, VDDS_PLL_CORE_LCD, VDDS_OSC, VDDA1P8V_USB0, VDDA1P8V_USB1, VDDS||AM335x||1.8 V ± 5%||590|
|3-up, 2-down||VDDA_USB0, VDDA_USB1, VDDSHVx||AM335x||3.3 V ± 5%||370|
|3-up, 2-down||VBAT||WL1837MOD||3.3 V||850|
|3-up, 2-down||V_NAND||NAND Flash||3.3 V||80|
|3-up, 2-down||Other Peripheral||Board||3.3 V||< 500|
|2-up, 3-down||VDDS_DDR, V_DDR3L||DDR3L||1.35||250|
In this system, the processor device on the board is the AM3358BZCZA. The operating performance points (OPPs) have been configured for "Nitro", which means the VDD_MPU should be 1.325 V, enabling a 1-GHz speed grade. The recommended operating conditions are showed in Section 5.5 of the AM335x data sheet. The power consumption summary for each terminal is showed in Section 5.6 of the AM335x data sheet.