Phytec phyCORE-i.MX31, Hardware Manual

Page: 85 / 135

The phyCORE-i.MX on the Development Board
©
PHYTEC Messtechnik GmbH 2007 L-700e_0
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13.5.5.1 Boot-Mode and Clock Selection (S5)
Table 23: Clock selection
S
TATE OF
SW
NUMBER
1
S
TATE OF
SW
NUMBER
2
S
TATE OF X
_CLKSS
ON OFF 0 => CKIL (32KHz) is used as clock source
OFF ON 1 => CKIH (26MHz) is used as clock source
Table 24: Boot_Mode2 selection
S
TATE OF SW NUMBER
3
S
TATE OF SW NUMBER
4
S
TATE OF X
_BOOT_MODE0
(BOOT_MODE2)
ON OFF 0
OFF ON 1
Table 25: Boot_Mode4 selection
S
TATE OF SW NUMBER
5
S
TATE OF SW NUMBER
6
S
TATE OF X
_BOOT_MODE1
(BOOT_MODE4)
ON OFF 0
OFF ON 1
Table 26: x_switch (not used)
S
TATE OF SW NUMBER
7
S
TATE OF SW NUMBER
8
S
TATE OF X
_
SWITCH
ON OFF 0
OFF ON 1
In the standard configuration, the main boot possibilities are:
- On UART/USB: