MBX Jumper Headers
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6-3
6
MBX Jumper Headers
Jumper Settings in Brief
For convenient reference, manually configurable headers on the board are
listed below. Default settings are enclosed in brackets.
Table 6-1. Jumper Settings
Header
Function
Jumper Settings
J1
Backup power
configuration
[1-2]
On-board battery backup.
2-3
External battery backup.
J3
Boot ROM write
protection
1-2
Boot ROM write protection on (writes disabled).
[2-3]
Boot ROM write protection off (writes enabled).
J4
Boot ROM Device
selection
1-2
Port size = 8 bits; boot from ROM.
[2-3]
Port size = 32 bits; boot from Flash.
J5
Test/Debug port
selection
1-2
IEEE 1149 functionality enabled at IEEE 1149
header.
[2-3]
Debug functionality enabled at Debug header.
J6
Arbitration mode
1-2
External arbitration selected (for one or two external
masters).
[2-3]
Internal arbitration selected (for one external master
only).
J7
IDE interface
configuration
1-2
“Native” (EIDE) addressing mode selected for IDE
interface.
[2-3]
“Legacy” addressing mode selected for IDE
interface.
Summary of Contents for MBX Series
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