Mbx Jumper Headers; Jumper Settings In Brief; Table 6-1. Jumper Settings - Motorola MBX Series Installation And Use Manual

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.
Header Function
J1 Backup power
configuration
J3 Boot ROM write
protection
J4 Boot ROM Device
selection
J5 Test/Debug port
selection
J6 Arbitration mode
J7 IDE interface
configuration
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Table 6-1. Jumper Settings

[1-2] On-board battery backup.
2-3 External battery backup.
1-2 Boot ROM write protection on (writes disabled).
[2-3] Boot ROM write protection off (writes enabled).
1-2 Port size = 8 bits; boot from ROM.
[2-3] Port size = 32 bits; boot from Flash.
1-2 IEEE 1149 functionality enabled at IEEE 1149
header.
[2-3] Debug functionality enabled at Debug header.
1-2 External arbitration selected (for one or two external
masters).
[2-3] Internal arbitration selected (for one external master
only).
1-2 "Native" (EIDE) addressing mode selected for IDE
interface.
[2-3] "Legacy" addressing mode selected for IDE
interface.
MBX Jumper Headers
Jumper Settings
6
6-3