Kontron VM162 - Manual (Page 70)

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