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
]
]
]
11101b
Reserved
11110b
Reserved
00b
11111b
Fast
EMAC1
UART0
Reserved
00b = 19.2MHz
For Fast
For Fast
0 = 8-bit device 00b = MII
0 = CLKOUT1
(all other values
External
External Boot:
External Boot:
disabled
01b = 24MHz
1 = 16-bit
01b = RMII
reserved)
Boot
must be 0b
00b = non-muxed
device
1 = CLKOUT1
10b = 25MHz
10b =
device
enabled
Reserved
11b = 26MHz
10b = muxed
11b = RGMII
device
w/o internal
x1b = reserved
delay
SYSBOOT Configuration Pins Notes:
1. WAIT is monitored on GPMC_WAIT0.
2. MUX1 and MUX2 designate which group of XIP signals are used. Each group is defined in
.
3. Note that even though some bits may be a "don't care" for ROM code, all SYSBOOT values are latched into the CONTROL_STATUS register
and may be used by software after ROM execution has completed.
4. SYSBOOT[15:0] terminals are respectively LCD_DATA[15:0] inputs, latched on the rising edge of PWRONRSTn.
4111
SPRUH73H – October 2011 – Revised April 2013
Initialization
Copyright © 2011–2013, Texas Instruments Incorporated