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
Don't care for
10000b
XIP
UART0
EMAC1
MMC0
00b = 19.2MHz
00b = non-muxed
0 = 8-bit device 00b = MII
0 = CLKOUT1
(all other values
ROM code
(MUX1)
device
disabled
01b = 24MHz
1 = 16-bit
01b = RMII
reserved)
10b = muxed
device
1 = CLKOUT1
10b = 25MHz
10b =
device
enabled
Reserved
11b = 26MHz
x1b = reserved
11b = RGMII
w/o internal
delay
00b
Don't care for
10001b
XIP w/
UART0
EMAC1
MMC0
00b = 19.2MHz
00b = non-muxed
0 = 8-bit device 00b = MII
0 = CLKOUT1
(all other values
ROM code
WAIT
device
disabled
01b = 24MHz
1 = 16-bit
01b = RMII
reserved)
(MUX1)
10b = muxed
device
1 = CLKOUT1
10b = 25MHz
10b =
device
enabled
Reserved
11b = 26MHz
x1b = reserved
11b = RGMII
w/o internal
delay
00b
For NAND boot:
Don't care for
Don't care for
10010b
NAND
NANDI2C USB0
UART0
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
For NAND boot:
Don't care for
Don't care for
10011b
NAND
NANDI2C MMC0
UART0
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
For NAND boot:
Don't care for
10100b
NAND
NAND12
SPI0
EMAC1
00b = 19.2MHz
0 = ECC done
00b = MII
0 = CLKOUT1
(all other values
must be 00b
ROM code
C
by ROM
disabled
01b = 24MHz
01b = RMII
reserved)
1 = ECC
1 = CLKOUT1
10b = 25MHz
10b =
handled by
enabled
Reserved
11b = 26MHz
NAND
11b = RGMII
w/o internal
delay
00b
For NAND boot:
Don't care for
10101b
NANDI2C MMC0
EMAC1
UART0
00b = 19.2MHz
0 = ECC done
00b = MII
0 = CLKOUT1
(all other values
must be 00b
ROM code
by ROM
disabled
01b = 24MHz
01b = RMII
reserved)
1 = ECC
1 = CLKOUT1
10b = 25MHz
10b =
handled by
enabled
Reserved
11b = 26MHz
NAND
11b = RGMII
w/o internal
delay
4109
SPRUH73H – October 2011 – Revised April 2013
Initialization
Copyright © 2011–2013, Texas Instruments Incorporated