Fujitsu MB91460 SERIES manual Switch Setting Description, Power Switch, Jumper Setting Description

SK-91F467-FLEXRAY V1.1

Jumpers and Switches

3.4Power Supply

There are four on-board switching regulators to provide the voltages 5V, 3.3V, 2.5V and 1.8V on the starter-kit. With the power ON/OFF-switch S8 or S9 (S9 is a soldering option to use a different switch), the main input voltage from DC-connector X5 will be connected to the VIN voltage of the board. The VIN voltage supplies the switching regulators and the VBat voltage of the FlexRay physical layer driver modules from TZM (FT1080), if they are connected to X3 and X7.

Switch		Setting		Description
S8 or S9		ON (1-2)		Power ON
		OFF (2-3)		Power OFF
Default:
	grey
			Table 3-4: Power Switch

With JP91 the pins B14, B15 and B16 of the external bus interface connector X14 can be connected to the VIN voltage, so that it is possible to supply the board from an external connected board e.g. the Fujitsu FlexRay FPGA board.

There is a triple supply monitor on-board, which monitors three of the four DC output voltages and generates a system reset, in case with wrong levels of the on board voltages. 5V and 3.3V are always monitored and the third monitored voltage can be selected with the solder jumpers JP42 and JP43.

With JP68 it is possible to select the whole board supply voltage Vcc to 5V or 3.3V

Jumper		Setting	Description
JP91		ON (closed)	Vin connected to X14 pins B14, B15 and B16
		OFF (open)	Vin not connected to X14 pins B14, B15 and B16
JP42		ON (closed)	Vcc1V8 connected to supply monitor
		OFF (open)	Vcc1V8 not connected to supply monitor
JP43		ON (closed)	Vcc2V5 connected to supply monitor
		OFF (open)	Vcc2V5 not connected to supply monitor
JP68	1-2		Vcc is connected to 5V
	2-3		Vcc is connected to 3.3V

Default: grey

Table 3-5: Power supply configurations

FMEMCU-UG-910017-11 - 22 - © Fujitsu Microelectronics Europe GmbH