Table 2-3, Table 2-4, and Table 2-6 provide detailed information for configuring the primary boot mode as the first boot mode attempted after reset.

To configure eMMC boot as the primary boot mode, use the following pin settings:

1. Select eMMC Boot Mode
   • Primary Boot Mode B Pin: BOOTMODE[0] = 0b1
   • Primary Boot Mode A Pins: MCU_BOOTMODE[3:5] = 0b100
   Table 2-3 Primary Boot Mode Selection When MCU Only = 0

   Primary Boot Mode B Pin	Primary Boot Mode A Pins			Boot Mode Selected
   0	MCU 5	MCU 4	MCU 3
   1	0	0	1	eMMC

2. Configure eMMC Boot Settings, see also Table 2-4 and Table 2-5
   • BOOTMODE[4:6] = 0b000 → 1.8V I/O, maximum bus width (8 bit on Port 0), using Port 0
3. MCU-only Configuration
   • MCU_BOOTMODE[6] = 0b0
   Table 2-4 Primary Boot Mode Configuration

   Primary Boot Mode Configuration Pins			Primary Boot Mode B Pin	Primary Boot Mode A Pins			Primary Boot Mode
   6	5	4	0	MCU 5	MCU 4	MCU 3
   Port	Bus width	Voltage	1	0	0	1	eMMC

   Table 2-5 eMMC Boot Configuration Fields

   BOOTMODE Pins	Field	Value	Description
   6	Port	0 1	Port 0 Port 1
   5	Bus Width	0 1	Maximum width by port (8 bit on Port 0) 1 bit only
   4	Voltage	0 1	1.8V 3.3V

As a result, configure the DIP switch settings as follows:

• BOOTMODE SW8[1:8]: 1XXX_000X
• MCU_BOOTMODE SW9[1:8]: X100_0XXX