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Motorola USB08 Reference Manual: Jumpers And Bridges; Jumper Configuration

Universal serial bus evaluation board using the mc68hc908jb8.
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Hardware Description

2.6 Jumpers and Bridges

Designer Reference Manual
38
The jumper configuration is shown in
Table 2-3. Jumper Configuration
(a)
Jumper
Position
Open*
JP1-A
Closed
Open
JP1-B
Closed*
Open
JP1-C
Closed*
Open
JP1-D
Closed*
Open
JP1-E
Closed*
Open
JP1-F
Closed*
Open
JP1-G
Closed*
Open
JP1-H
Closed*
1-2
JP2
2-3*
a. * = delivery status
Placement of the solder bridges on the downside of the PCB is shown in
Figure
2-4.
Table 2-4
Hardware Description
Table
Function
Normal user mode
High voltage on IRQ to enter monitor mode
RS232 is disconnected from the power supply.
RS232 is connected to the power supply.
PTA0 can be used without restriction.
PTA0 is used for monitor mode communication.
PTA1 can be used without restriction.
PTA1 is used for monitor mode configuration.
PTA2 can be used without restriction.
PTA2 is used for monitor mode configuration.
PTA3 can be used without restriction.
PTA3 is used for monitor mode configuration.
PTA7 can be used without restriction.
PTA7 serves as receiving line for the user RS232.
PTC0 can be used without restriction.
PTC0 serves as transmission line for the user RS232.
Self-powered: power supply via voltage regulator
Bus-powered: power supply via USB
shows the solder bridges configuration.
2-3.
USB08 Evaluation Board
MOTOROLA

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Mc68hc908jb8

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