Functional Description
Table 26-7. SYSBOOT Configuration Pins
(continued)
SYSBOOT[15:14 SYSBOOT[13:12 SYSBOOT[11:10 SYSBOOT[9]
SYSBOOT[8]
SYSBOOT[7:6] SYSBOOT[5]
SYSBOOT[4:0]
Boot Sequence
]
]
]
00b
01010b
EMAC1
XIP
SPI0
NANDI2C
00b = 19.2MHz
For XIP boot:
0 = ECC done
0 = 8-bit device 00b = MII
0 = CLKOUT1
(all other values
by ROM
disabled
01b = 24MHz
00b = non-muxed
1 = 16-bit
01b = RMII
reserved)
device
1 = ECC
device
1 = CLKOUT1
10b = 25MHz
10b =
handled by
enabled
10b = muxed
Reserved
11b = 26MHz
NAND
device
11b = RGMII
x1b = reserved
w/o internal
delay
For NAND boot:
must be 00b
00b
For NAND boot:
Don't care for
Don't care for
01011b
USB0
NAND
SPI0
MMC0
00b = 19.2MHz
0 = ECC done
0 = CLKOUT1
(all other values
must be 00b
ROM code
ROM code
by ROM
disabled
01b = 24MHz
reserved)
1 = ECC
1 = CLKOUT1
10b = 25MHz
handled by
enabled
11b = 26MHz
NAND
00b
Don't care for
01100b
USB0
NAND
XIP
NANDI2C
00b = 19.2MHz
For XIP boot:
0 = ECC done
0 = 8-bit device
0 = CLKOUT1
(all other values
ROM code
by ROM
disabled
01b = 24MHz
00b = non-muxed
1 = 16-bit
reserved)
device
1 = ECC
device
1 = CLKOUT1
10b = 25MHz
handled by
enabled
10b = muxed
11b = 26MHz
NAND
device
x1b = reserved
For NAND boot:
must be 00b
00b
Don't care for
01101b
USB0
NAND
XIP
SPI0
00b = 19.2MHz
For XIP boot:
0 = ECC done
0 = 8-bit device
0 = CLKOUT1
(all other values
ROM code
by ROM
disabled
01b = 24MHz
00b = non-muxed
1 = 16-bit
reserved)
device
1 = ECC
device
1 = CLKOUT1
10b = 25MHz
handled by
enabled
10b = muxed
11b = 26MHz
NAND
device
x1b = reserved
For NAND boot:
must be 00b
01110b
Reserved
00b
Don't care for
Don't care for
Don't care for
01111b
UART0
EMAC1
Reserved Reserved
00b = 19.2MHz
00b = MII
0 = CLKOUT1
(all other values
ROM code
ROM code
ROM code
disabled
01b = 24MHz
01b = RMII
reserved)
1 = CLKOUT1
10b = 25MHz
10b =
enabled
Reserved
11b = 26MHz
11b = RGMII
w/o internal
delay
4108Initialization
SPRUH73H – October 2011 – Revised April 2013
Copyright © 2011–2013, Texas Instruments Incorporated