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D E M O 9 0 8 L B 8
Figure 4: MON08 Setup
MON_EN
VTST_EN
OSC_EN
User-5
•
NOTE: To enter the MON08 monitor mode, the input voltage must exceed +9V
NOTE: User-5 must be disabled to allow monitor mode entry
NOTE: Remove VTST_EN jumper if using a powered MON08 debug cable.
When using the MON08 cable to access monitor mode, the host software must be configured
properly. Many MON08 cables are capable to powering the target board through the MON08
header. In this case, the appropriate voltages will be applied to the board and the state of the
monitor configuration jumpers is DON'T CARE. If the board is not powered through the
MON08 Port, then the minimum voltage applied to the board is +9V and the VTST_EN jumper
must be installed. Regardless of how the board is powered, the state of the MON_EN jumper
is DON'T CARE when using a MON08 cable.
POWER
Input power may be applied by external connection to a 2 position terminal block or directly to
connector J1. The PWR_SEL option header determines the selected power input.
Terminal Block
The TB1 terminal block allows external voltage to be supplied to the board. For normal opera-
tion, input voltage should be limited to the range of +6V and +20V. The terminal block is a
3.55mm, screw-type, connector that accepts a maximum 18 AWG wire. An on-board voltage
regulator converts the input voltage to the +5V used by the board. Bulk capacitance on the
regulator input and output provides noise immunity and reduces ripple.
A large plus sign (+) adjacent to the terminal block input indicates the positive terminal. Use
care when connecting power to the terminal block. Reversing the power connections at TB1
may damage the board.
ON/OFF
Enables MON08 communication through DEBUG connector. On
for serial access via DEBUG connector off for MON08 cable ac-
cess
ON
Force MON08 Monitor Mode. Remove if using a powered MON08
debug cable.
ON/OFF
Enable/Disable External Clock Oscillator if required
•
OFF
Disable User-5 Function. May not enter monitor mode if not re-
moved.
10
M A R C H
2 4 ,
2 0 0 5
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