14
Embedded Modules
© Tibbo Technology Inc.
EM2000 versions and the wireless add-on port
Standard EM2000 devices do not have the wireless add-on port connector and the
landing PCB area for the connector is left empty.
Wireless add-on modules, such as the
, may be directly soldered into the
wireless add-on port pads on the EM2000. Ordering the
device combination will get you the EM2000 module with the WA2000 add-on
already soldered in.
EM2000-...-A devices feature a 10-pin wireless add-on pin header. The pins on this
header are identical to all other pins on the EM2000 and face the host PCB. This
way the wireless port of the EM2000 can be connected to some other circuitry on
the host PCB.
EM2000-...-T devices have a female wireless add-on port connector, which the
WA2000 can be plugged into. EM2000 modules of "-T" variety are intended for
convenient testing of the WA2000 and are not recommended for use in production
devices.
For further information on available EM2000 versions see
and
Ordering Info and Specifications
Flexible mapping of Wi-Fi interface lines
It should be noted that the WA2000 can be controlled through any five GPIO lines of
the EM2000. Obviously, the lines on the wireless add-on port are the most
convenient for the task: The pin assignment of the connector matches that of the
WA2000, so the Wi-Fi add-on can be inserted into the connector directly. Also, this
way the WA2000 takes no extra space on the host PCB. Nonetheless, it is always
possible to connect the WA2000 using wires (or traces on the PCB), in which case
any combination of I/O lines can be used for communicating with it. This is
facilitated by several I/O mapping properties offered by the Wi-Fi (wln.) object.
For more details on Wi-Fi communications see wln. object's documentation in the
TIDE, TiOS, Tibbo BASIC, and Tibbo C Manual.
4.1.1.3
Ethernet Port Lines
The Ethernet port of the EM2000 is of the 100/10BaseT type. Onboard electronics
of the EM2000 do not include Ethernet magnetics, so the magnetics circuitry must
be connected externally (to pins TX+, TX-, RX+, and RX-).
You can use either a standalone magnetics part (such as YCL-PH163112) or an RJ45
connector with integrated magnetics (i.e. YCL-PTC1111-01G). Here is the circuit
diagram based on the YCL-PTC1111-01G: