2.9
BM
Header
The BM header is a 2-pin jumper to be used in EC14xx product firmware update.
In normal EC14xx operation, the jumper cap MUST be put on the jumper (that is, 2-pin
jumper is short).
In firmware update mode, the jumper cap MUST be removed from the jumper. For
further information about firmware update on EC14 series product, please refer to a
separate firmware update document.
On EC1403/EC1404, the BM header is beside RJ-45 Ethernet connector as shown
below:
Ethernet
Debug
UART4
(RS485)
UART5
(RS232)
BM
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