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VM162/VM172
Chapter 3 Configuration
Page 3- 10
© PEP Modular Computers
Juli 23, 1997
3.3.8 SRAM Data Retention
The battery backup of the VM162/VM172 is connected to both the SRAM and RTC. This jumper gives
the user the possibility to disconnect the SRAM from the battery backup, giving the RTC longer backup
support.
3.3.9 BERR1 Timeout
This jumper sets the timeout of the BERR1 and can be used for debugging purposes.
3.3.10 Backup Current Test Bridge
This jumper is reserved for support usage.
Jumper
Setting
Description
J16
1-2
SRAM data retention is off
1-3
SRAM data retention is on
Default
Jumper
Setting
Description
J17
J18
J21
J17, J18, J21
Set
Open
Open
8
µ
s BERR1 tineout
Open
Set
Open
32
µ
s BERR1 timeout
Open
Open
Set
128
µ
s BERR1 timeout
Open
Open
Open
Infinite BERR1 timeout
Jumper
Setting
Description
J22
Set
Operating mode
Default
Open
Test mode
Содержание VM162
Страница 2: ......
Страница 6: ...VM162 VM172 Table of Contents Page TOC 4 PEP Modular Computers Juli 23 1997 ...
Страница 7: ...VM162 VM172 Juli 23 1997 Page 0 1 PEP Modular Computers Preface ...
Страница 12: ...VM162 VM172 Chapter 1 Introduction Page 1 2 PEP Modular Computers Juli 23 1997 ...
Страница 22: ...VM162 VM172 Chapter 1 Introduction Page 1 12 PEP Modular Computers Juli 23 1997 1 9 Schematic Board Layout ...
Страница 62: ...VM162 VM172 Chapter 3 Configuration Page 3 2 PEP Modular Computers Juli 23 1997 ...
Страница 72: ...VM162 VM172 Chapter 4 Programming Page 4 2 PEP Modular Computers July 19 1997 ...
Страница 102: ...Appendix Bootstrap Loader Page BOOT 10 PEP Modular Computers Juli 23 1997 This page has been intentionally left blank ...
Страница 110: ...Appendix OS 9 Cabling Page OS 2 PEP Modular Computers Novemeber 21 1996 1 1 3 6 pin RJ12 Connector on OS 9 Side ...
Страница 117: ...3 OS 9 System Modem 3 1 15 pin Connector 3 2 8 pin RJ45 Connector SMART I O ...
Страница 119: ...4 2 Hardware Handshake 4 2 1 15 pin Connector 4 2 2 8 pin RJ45 Connector SMART I O ...
Страница 120: ...Appendix OS 9 Cabling Page OS 12 PEP Modular Computers Novemeber 21 1996 This page has been intentionally left blank ...