Table of Contents
Advertisement
2.17 COM port connector (CN20,CN12)
The PCM-9371 provides two serial ports (COM1: RS-232; COM2: RS-
232/422/485) in one DB-9 connector (COM1) and one 14-pin dual-inline,
male header. It provides connections for serial devices (a mouse, etc.) or a
communication network. You can find the pin assignments for the COM
port connector in Appendix C.
2.17.1 COM2 RS-232/422/485 setting (pin 1-6 of JP1)
COM2 can be configured to operate in RS-232, RS-422, or RS-485 mode.
This is done via JP1
Table 2.4: JP1: COM2 RS-232/422/485 select
PINS
1-2
3-4
5-6
2.18 VGA/LCD/LVDS interface connections
The PCM-9371's PCI SVGA interface can drive conventional CRT dis-
plays and is capable of driving a wide range of flat panel displays, includ-
ing passive LCD and active LCD displays. The board has three
connectors to support these displays: one for standard CRT VGA moni-
tors, one for flat panel displays, and one for LVDS type LCD panels.
2.18.1 CRT display connector (CN21)
CN21 is a 16-pin, dual-inline header used for conventional CRT displays.
A simple one-to-one adapter can be used to match CN21 to a standard 15-
pin D-SUB connector commonly used for VGA.
Pin assignments for CRT display connector CN21 are detailed in Appen-
dix C.
2.18.2 Flat panel display connector (CN4)
CN4 consists of a 40-pin connector which can support a 24-bit LCD
panel. It is Hirose's product no. DF13A-40DP-1.25 V
The PCM-9371 provides a bias control signal on CN11 that can be used
to control the LCD bias voltage. It is recommended that the LCD bias
voltage not be applied to the panel until the logic supply voltage (+5 V or
+3.3 V) and panel video signals are stable. Under normal operation, the
control signal (ENAVEE) is active high. When the PCM-9371's power is
PCM-9371 User's Manual
RS-232*
Open
Open
Open
Closed
Closed
Open
RS-422
Closed
Open
Open
20
RS-485
Advertisement
Table of Contents
