Communications Clock; Eeprom Write Protection; Jtag Chain - PEP VM162 User Manual

Chapter 3 Configuration
Note: The above solder jumpers describe the basic configuration of the board. They are factory set and
should not be altered by the user. Alteration of these jumpers can result in damage to the board.

3.3.5 Communications Clock

Jumper
J4

3.3.6 EEPROM Write Protection

The serial EEPROM stores important data, such as the PEP assigned Ethernet address. In order to pre-
vent overwriting, users may set the protection.
Jumper
J9

3.3.7 JTAG Chain

Jumper
J23
Juli 23, 1997
Setting Description
Set 24 MHz connected to 68EN360 RCLK2 pin
Open 24 MHz disconnected from 68EN360 RCLK2 pin
Setting Description
Set Serial EEPROM write protected
Open Serial EEPROM not write protected
Setting Description
1-2 JTAG Chain, CPUs included
1-3 JTAG Chain, CPUs excluded
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VM162/VM172
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