Following information will be fused to the i.MX6 processor during production:
Boot-device | ||
|---|---|---|
Fuse (0x021bc…) | Value | Description |
0x450 (BOOT_CFG) | 0x3840 | Boot from internal uSD-Card (default) |
0x2840 | Boot from external SD-Card (on request) | |
0x460 | 0x10 | Boot mode configuration is taken from fuse |
MAC-address | |
|---|---|
Fuse (0x021bc…) | Description |
0x620 (MAC_ADDR[31:00]) | MAC-address, four lower bytes |
0x630 (MAC_ADDR[47:32]) | MAC-address, two upper bytes |
Board-Revision | ||
|---|---|---|
Fuse (0x021bc…) | Value | Description |
0x660 (GP1[7..0]) | 1 | V1R1 |
2 | V1R2 | |
3 | V1R3 | |
Feature | ||
|---|---|---|
Fuse (0x021bc…) | Value | Description |
0x660 (GP1[31..30]) | 00 | Undefined. RAM may or may not support low-voltage-mode. Its safe to use 1.5V |
10 | RAM only supports DDR3 mode: 1.5V | |
11 | RAM supports LVDDR3 mode: 1.35V | |
0x660 (GP1[29..28]) | 00 | Undefined. RAM width unknown |
01 | 16bit RAM-Width | |
10 | 32bit RAM-Width | |
11 | 64bit RAM-Width | |
Example
To read the fuses in WinCE use the reg command.
i.e.
reg 21bc660 [021bc660] 0xe0000003
Shows that the module is set to LVDDR3, 32bit RAM-Width, Board-Revision V1R3.