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Preinitialization
Table 26-4. Peripheral Preferred Booting Configuration Pins After POR (continued)
sys_boot [4:0]
Booting Sequence When SYS.BOOT[5] = 1
Peripheral Preferred Booting Order
0b11101
Reserved
(1)
0b11110
0b11111
Fast XIP booting.
USB (only on GP
UART3 (only on GP
Wait monitoring
devices)
devices)
ON (only for GP
devices)
shows the sys_boot pin configuration after a warm reset.
Table 26-5. Booting Configuration Pins After a Warm Reset
sys_boot[4:0]
Booting Sequence When SYS.BOOT[5] = 0
Booting Sequence When SYS.BOOT[5] =
1
Memory Preferred Booting Order
Peripheral Preferred Booting Order
First
Second
First
Second
0b00000
OneNAND
OneNAND
0b00001
NAND
NAND
0b00010
OneNAND
OneNAND
0b00011
MMC2
MMC2
0b00100
OneNAND
OneNAND
0b00101
MMC2
MMC2
0b00110
MMC1
MMC1
0b00111
XIP
XIP
0b01000
XIPwait
DOC
XIPwait
DOC
0b01001
MMC2
MMC2
0b01010
XIP
XIP
0b01011
XIPwait
DOC
XIPwait
DOC
0b01100
NAND
NAND
0b01101
XIP
XIP
0b01110
XIPwait
DOC
XIPwait
DOC
0b01111
NAND
NAND
0b10000
OneNAND
OneNAND
0b10001
MMC2
MMC2
0b10010
MMC1
MMC1
0b10011
XIP
XIP
0b10100
XIPwait
DOC
XIPwait
DOC
0b10101
NAND
NAND
0b10110
OneNAND
OneNAND
0b10111
MMC2
MMC2
0b11000
MMC1
MMC1
0b11001
XIP
XIP
0b11010
XIPwait
DOC
XIPwait
DOC
0b11011
NAND
NAND
0b11100
MMC2_H
MMC2_H
0b11101
Reserved
(1)
0b11110
0b11111
ROM code fast XIP booting (only for GP devices)
ROM code fast XIP booting (only for GP
devices)
(1)
Must not be selected
3519
SWPU177N – December 2009 – Revised November 2010
Initialization
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