Installation OEM6 Family Cards
Chapter 2
OEM6 Family Installation and Operation User Manual Rev 12
39
Table 4: OEM6 Card Default Serial Port Configurations
on page 52 for details on configuring RS-232 and RS-422 for the OEM6 family.
Each port may support some or all of the following signals:
•
Request To Send (RTS) [COM1 and COM2]
•
Clear To Send (CTS) [COM1 and COM2]
•
Received Data (RX)
•
Transmitted Data (TX)
Port settings (bit rate and parity, for example) are software configurable. See
Appendix A, OEM615 Technical Specifications
Appendix C, OEM617D Technical Specifications
Appendix E, OEM638 Technical Specifications
information on data communications specifications and pin assignments.
OEM615, OEM617 and OEM617D Receivers
COM1, COM2 and COM3 are CMOS LVTTL level I/O pins only. These ports require the addition of an RS-
232/RS-422 transceiver to provide appropriate signal levels. Most RS-232 or RS-422 transceivers provide
adequate ESD protection.
Section A.2.1, Logic-Level I/O
on page 122 for details.
Model
COM1
COM2
COM3
COM4
COM5
IMUCOM
(COM6)
LVTTL with no
flow control
LVTTL with no
flow control
LVTTL with no
flow control
N/A
N/A
N/A
User configurable
as RS-232 with
flow control or
RS-422 without
flow control
LVTTL with flow
control
LVTTL with no
flow control
N/A
N/A
N/A
User configurable
as RS-232 with
flow control or
RS-422 without
flow control
User configurable
as RS-232 with
flow control or
RS-422 without
flow control
LVTTL with
flow control
LVTTL with
flow control
LVTTL with
flow control
User configurable
as RS-232 with
flow control or
RS-422 without
flow control
All six COM ports on the OEM638 have all signals (TX/RX/RTS/CTS). In addition, COM2
has DTR/DCD flow control signals.
If using the Ethernet connectivity, the distance between the RJ45 connector and the
magnetics must be no more than 10 inches (25.4 cm) and the distance between the
device and the magnetics must be no more than 1.5 inches (3.8 cm). The OEM638 and
OEM628 uses the Micrel KSZ8851SNLI device. Follow Micrel’s recommendations for
transformer selection.