EMAC ARM9, Руководство пользователя

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PPC-E7+ User Manual.doc
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Rev 1.3 © 2015 EMAC, Inc.
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Appendix B: Jumper Settings
JB1 Boot0 Source Selection
Jumper Position Setting
Pins 2 & 3 A Serial Boot Loader Download (EBI)
Pins 1 & 2* B Normal Boot from Flash (DBI)
* Default setting
JB2 Boot1 Option Selection
Jumper Position Setting
Pins 2 & 3* A Flash Enable (FE)
Pins 1 & 2 B Flash Disable (FD)
* Default Setting
JB3 Flash Write Protect
Jumper Position Setting
Pins 2 & 3 A Resident Flash Disable
Pins 1 & 2* B Resident Flash Enable
* Default setting
JB4 RTC Battery Enable
Jumper Position Setting
Pins 1 & 2 ON Enable Battery Backup
Pins 2 & 3* OFF Disable Battery Backup
* Default setting
JB5 RS485/RS422 Select
Jumper Position Setting
Pins 1 & 2 485 Select RS485
Pins 2 & 3* 422 Select RS422
* Default setting
JB6 RS232/RS4xx Select
Jumper Position Setting
Pins 1 & 2* 232 Select RS232
Pins 2 & 3 4xx Select either RS422 or RS485 depending on JB5
* Default setting