Emerson MVME7100 manual SMT Configuration Switch, S1, 4 SMT Configuration Switch Position

SMT Configuration Switch, S1 Hardware Preparation and Installation

The following sections describe the on-board switches and their configurations for the MVME7100.

Board Malfunction

Switches marked as “reserved” might carry production-related functions and can cause the board to malfunction if their setting is changed.

Do not change settings of switches marked as “reserved”. The setting of switches which are not marked as “reserved” has to be checked and changed before board installation.

2.4.1SMT Configuration Switch, S1

An 8-position SMT configuration switch (S1) is located on the MVME7100 to control the flash bank write-protect, select the flash boot image, and control the safe start ENV settings. The default setting on all switch positions is OFF and is indicated by brackets in Table 2-5.

Figure 2-4 SMT Configuration Switch Position

1 Normal ENV Boot Block A

WP Disabled

Normal Operation

Normal Operation

PMC 133 MHz

Master WP

Reserved

1 ON

2

3

4

5

6

7

8

Table 2-5 Configuration Switch Settings (S1)

	Switch	Description	Setting	Function
	S1-1	Safe Start1	[OFF]	Use normal ENV
			ON	Use safe ENV
	S1-2	Boot Block B	[OFF]	Flash memory map normal and boot block A selected
		Select	ON	Boot block B selected, mapped to highest address
	S1-3	Flash Bank WP	[OFF]	Entire flash not write-protected
			ON	Flash is write-protected
	S1-4	JTAG Pass Thru	[OFF]	Normal operation
			ON	Pass-Thru mode
MVME7100 Single Board Computer Installation and Use (6806800E08A)					37