Functional Description
Table 26-7. SYSBOOT Configuration Pins
SYSBOOT[15:14 SYSBOOT[13:12 SYSBOOT[11:10 SYSBOOT[9]
SYSBOOT[8]
SYSBOOT[7:6] SYSBOOT[5]
SYSBOOT[4:0]
Boot Sequence
]
]
]
For all boot
For all boot
For XIP boot:
For EMAC
For all boot
For XIP boot:
For NAND and
modes: Crystal
modes: Set to
Bus width
boot: PHY
modes:
NANDI2C
Muxed or non-
Frequency
00b for normal
mode
CLKOUT1
boot: NAND
muxed device
operation
output
ECC
For NAND boot:
enabled/disable
For Fast
d on
must be 00b
External Boot:
XDMA_EVENT
must be 0b
_INTR0
CONTROL_
CONTROL_
CONTROL_
CONTROL_
CONTROL_
CONTROL_
CONTROL_
CONTROL_
STATUS[23:22]
STATUS[21:20]
STATUS[19:18]
STATUS[17]
STATUS[16]
STATUS[7:6]
STATUS[5]
STATUS[4:0]
1st
2nd
3rd
4th
00000b
Reserved
00b
Don't care for
Don't care for
00001b
UART0
XIP w/
MMC0
SPI0
00b = 19.2MHz
For XIP boot:
0 = 8-bit device
0 = CLKOUT1
(all other values
ROM code
ROM code
WAIT
disabled
01b = 24MHz
00b = non-muxed
1 = 16-bit
reserved)
device
device
1 = CLKOUT1
10b = 25MHz
enabled
10b = muxed
11b = 26MHz
device
x1b = reserved
00b
For NAND boot:
Don't care for
Don't care for
00010b
UART0
SPI0
NAND
NANDI2C
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
Don't care for
00011b
UART0
SPI0
XIP
MMC0
00b = 19.2MHz
For XIP boot:
0 = 8-bit device
0 = CLKOUT1
(all other values
ROM code
ROM code
disabled
01b = 24MHz
00b = non-muxed
1 = 16-bit
reserved)
device
device
1 = CLKOUT1
10b = 25MHz
enabled
10b = muxed
11b = 26MHz
device
x1b = reserved
00b
Don't care for
00100b
UART0
XIP w/
MMC0
NAND
00b = 19.2MHz
For XIP boot:
0 = ECC done
0 = 8-bit device
0 = CLKOUT1
(all other values
ROM code
WAIT
by ROM
disabled
01b = 24MHz
00b = non-muxed
1 = 16-bit
reserved)
(MUX1)
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
4106Initialization
SPRUH73H – October 2011 – Revised April 2013
Copyright © 2011–2013, Texas Instruments Incorporated