TWRMCF51JGUM
TWR-MCF51JG Tower Module User's Manual
Page 16 of 21
Figure 7.
USB dual-role interface
3
Jumper Table
There are several jumpers on the TWR-MCF51JG that provide configuration selection and signal
isolation. Refer to the following table for details. The default installed jumper settings are shown in
bold with asterisks.
Table 5.
TWR-MCF51JG Jumper Table
Jumper
Option
Setting
Description
J1
USB Power Switch Enable
Input Connection
*ON*
Connect PTA1 to USB power switch enable input
OFF
Disconnect PTA1 from USB power switch enable
J2
USB Power Switch Flag
Output Connection
*ON*
Connect PTA2 to USB power switch over-current
flag output
OFF
Disconnect PTA2 from USB power switch over-
current flag output
J4
SCI1/SPI1 Connection
Selection
*1-2*
Connect SCI1_RX/SPI1_MISO to SPI1_MISO
on Primary Edge
2-3
Connect SCI1_RX/SPI1_MISO to SCI1_RX (RXD1)
on Primary Edge
J5
SCI1/SPI1 Connection
Selection
*1-2*
Connect SCI1_TX/SPI1_MOSI to SPI1_MOSI
on Primary Edge
2-3
Connect SCI1_TX/SPI1_MOSI to SCI1_TX (TXD1)
on Primary Edge
J9
Board Power Source
Selection
*3-5*
Refer to Table 2