UM1015
Switch and jumper settings
Doc ID 18124 Rev 1
15/38
4
Switch and jumper settings
4.1 Switch
1
settings
Note:
When Switch SW1-x is in the ON position, the bit value is 0. When Switch 1 is in the OFF
position, the bit value is 1.
Bits 3, 4, 5 and 6 enable you to set the Functional configuration. The default configuration is
Configuration 3
. For other configurations, refer to the SPEAr320 user manual available at
www.st.com/spear.
Table 4.
Switch 1 (SoC functional configuration)
Bit
Description
1
Test – see Debug configuration below
2
Reserved
3
Reserved
4
Reserved
5
Reserved
6
BootSel – see Debug configuration below
Table 5.
Switch 1 (debug configuration)
Test bit
Debug configuration
2
1
0
0
Normal Mode (No debug enabled)
0
1
ARM1 JTAG connected to J4
1
0
Reserved
Table 6.
Switch 1 (functional configuration)
Test bit
Functional configuration
6
5
4
3
1
0
1
1
Configuration 3
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