Rajant BreadCrumb ES1, User Manual, Page: 24 / 93

Figure and Table: BreadCrumb ES1 M8 5-pin Female Pinout
Pin Signal
1 USB 5 V +
2 USB DATA -
3 GND
4 USB DATA +
5 Reset Switch
2.5.4 USB
The BreadCrumb ES1 contains one USB 2.0 interface on the pins of its 5-pin M8 connector.
The port is compliant to the Enhanced Host Controller Interface (EHCI) and USB Transceiver 2.0 Macro-
cell Interface (UTMI+) Level 2 specifications. The port supports all three standard data transfer rates of
low speed (1.5Mbps), full speed (12Mbps), and high speed (480Mbps). The power switch for the port in-
cludes over current protection, thermal protection, in-rush current limiting, and hot-plug noise filtering.
The USB port can be used to perform BreadCrumb firmware upgrades and USB-based zeroize (or alter-
nately, these actions can be accomplished via software using BC|Commander). The USB port can also in-
terface to an optional GPS receiver accessory available from Rajant.
2.6 Status LED
The Status LED is capable of displaying warning and error codes, and link states. The LED Mode can be
configured in BC|Commander to be ON (switchable), ALERTS ONLY (switchable), OFF (non-switchable), or
OFF (switchable). When the LED Mode is ON, the BreadCrumb LED alternates between displaying the link
state and any warnings or errors. When the LED Mode is OFF, the BreadCrumb LED does not display any
warnings, errors, or the link state. When the LED Mode is set for ALERTS ONLY, the BreadCrumb LED alter-
nates between displaying the link state and any warnings or errors only if there are warnings or errors to
report. If there are no warnings or errors, the LED displays nothing.
The Status LED combines the three base colors of red, green and blue to display a broader spectrum of
colors which indicate the current status of a BreadCrumb. The meanings of the color code indicators are
given in the following table.
Table: Status LED Color Codes
Color Status
White (red, green and blue LEDs together; may
appear pale blue or pale green)
Powered on; start of boot process
Red-Blue-Green scrolling in succession End of successful boot process
Solid Blue Ready, but no connected Mesh peers (unit may
have Ethernet peers)