User manual

AM335xStarterKitHardwareUsersGuide
6
VDIG2 (300mA) VDDS_PLL_DDR (25mA) 1.8V
VDIG2 (300mA) VDDS_PLL_CORE_LCD (25mA) 1.8V
VDIG2 (300mA) VDDS_PLL_MPU (25mA) 1.8V
VDIG2 (300mA) VDDS_OSC (10mA) 1.8V
VAUX1 (300mA) VDDA1P8V_USB0/1 (50mA) 1.8V
VPLL (50mA) VDDA_ADC 1.8V
VDD3 SMPS (100mA) Not Used -
Table 1: Power supplies to AM335x from TPS65910A3 PMIC
Configuration/Setup
Boot Configuration
Various boot configurations can be set using the pull up / down resistor combinations provided on the SYS_BOOT
pins (LCD_DATA0..15).Boot configuration pins are latched upon de-assertion of PORz pin.
I2C Port Address Assignments
Information on I2C address assignments are provided below.
AM335x STARTER KIT (TMDSSK3358) Function AM335x I2C Port Address
Baseboard ID memory I2C0 0x50
AM355x PMIC Control I2C0 0x2D
AM355x PMIC Smart Reflex Control I2C0 0x12
Accelerometer Control I2C0 0x18
Audio Codec I2C0 0x1B
Capacitive Touch screen I2C0 0x38
Table 2:I2C Bus Addresses
Memories Supported
The TMDSSK3358 design supports on-board memories like DDR3 SDRAM and Board ID EEPROM. It also
supports an SD card socket.
DDR3 SDRAM
DDR3 SDRAM memory design is provided by using a 2 Gb single chip solution (MT41J128M16JT-125) from
Micron. It is internally configured as a16 Meg x 16 x 8 bank memory. A separate Regulator to supply the DDR
reference power to the AM335x and the VTT termination voltage to the termination components is provided in the
design. The VIO_SMPS output from the PMIC is programmed to provide the required 1.5V to the DDR3 SDRAM.