ST STR730-EVAL, User Manual, Page: 11 / 29

UM0559 Hardware
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Jumpers are fitted as shown in Figure 5 :
Figure 5. Jumper positions
2.13 Option switch settings
Table 3. Option jumpers
Jumper Schematic Description Default
J2 Figure 17 on page 26 CAN link: not fitted / fitted (default) Fitted
J3 Figure 11 on page 20 CPUIO: +5 V Fitted
J5 Figure 10 on page 19 XTAL2 Fitted
J6 Figure 10 on page 19 TST pull-down FItted
J7 Figure 10 on page 19 XTAL1 Fitted
Not fitted Do not fit Fitted
1-2 2-3
Table 4. Option switch settings
Switch Schematic Description Default
SW1
Figure 17 on page 26
CAN transceiver select: L9669 / L9616 (default)
Note SW1 and SW2 must be changed together.
1 = L9669
A = L9616
A
SW2 A
SW3 Figure 17 on page 26
L9616 ASC speed:
1-2 = pull down = high speed
2-3 = pull up = low speed
2-3
SW4 Figure 13 on page 22
SPI EEPROM notW:
1-2 = pull down = Write protect
2-3 = pull up = Write enabled
2-3
SW5 Figure 13 on page 22
SPI EEPROM notHOLD:
1-2 = pull down = SPI EEPROM in “hold mode”
2-3 = pull up = SPI EEPROM in “normal mode”
2-3
SW6 Figure 10 on page 19
CAN device select: channel 0 / channel 1
Note SW6 and SW8 must be changed together.
1-2 = channel 0
2-3 = channel 1
1-2
SW7 Figure 18 on page 27
I
2
C EEPROM write control (notWC):
1-2 = pull down = enable writes to EEPROM
2-3 = pull up = disable writes to EEPROM
1-2