25
HE4K-DCK-10
HARDWARE SPECIFICATION
CONFIDENTIAL
DOC-USR-0100-01
____________________________________________________________________________________
Z3 Technology, LLC
♦
100 N. 8th St. STE 250
♦
Lincoln, NE 68508-1369 USA
♦
+1.402.323.0702
The signal jacks and connectors available on the I/O Jack and PoE PCB are:
Connector Type
Function
J5
1.25mm header
RS485 I/F. Pin 1 is “A”, pin 2 is “B”.
J8
RJ-45 jack
Gigabit Ethernet
J14
USB 2.0 Type A
USB Host Interface
J17
DC Jack, 5.5/2.0mm Threaded jack for +12V power entry
J21
RCA jack
Composite video output
J29
3.5mm stereo jack
Microphone input. Tip=MIC_N, Ring=MIC_P, Ring=GND
J32
2.5mm stereo jack
Serial port interface, RS232 level. Tip=RX, Ring=TX, Sleeve=GND
Table 17 I/O Jack and PoE PCB Connectors
In addition, the PCB contains a bi-color Green/Red LED, and a tact switch.
The LED, D29, is controlled by GPIO0_1 (red) and GPIO0_2 (green). Setting each one of these GPIO
controls to logic 1 will turn on the corresponding LED color.
The tact switch can drives the GPIO0_3 pin, ball W17 of the CPU. This signal can be used by the
software to implement special functionality such as a 1-key recovery mechanism or other user-
defined functions.
