EPX-C414/Configuration
v1.0
www.winsystems.com
Page 31
7.10.12 BZ1 Speaker
Speaker
An on-board speaker, BZ1, is available for sound generation. The BIOS activates the
buzzer to beep during POST failure. Each error has its own unique beep code. Refer to
InsydeH20 BIOS POST Tasks for details.
The board beeps once at power up, and beeps several times if there is no RAM.
7.10.13 SERIAL (COM 1 through COM4) Connector
Layout and
Pin Reference
Additional Information
The FPGA code provides four 16C550-compatible serial ports through COM1 to COM4.
All four ports are RS232 and RS422/RS485 configurable. The mode selection, RS485
flow control, and termination enable-selection are controlled through the FPGA, and
user-selectable in the BIOS Setup Utility.
Pin
RS-232
RS-422
RS-485
Pin
RS-232
RS-422
RS-485
1
COM1_DCD
TX-
TX/RX-
2
COM1_DSR
–
–
3
COM1_RX
TX+
TX/RX+
4
COM1_RTS
–
–
5
COM1_TX
RX+
–
6
COM1_CTS
–
–
7
COM1_DTR
RX-
–
8
COM1_RI
–
–
9
GND
GND
GND
10
NC
NC
NC
11
COM2_DCD
TX-
TX/RX-
12
COM1_DSR
–
–
13
COM2_RX
TX+
TX/RX+
14
COM1_RTS
–
–
15
COM2_TX
RX+
–
16
COM1_CTS
–
–
17
COM2_DTR
RX-
–
18
COM1_RI
–
–
19
GND
GND
GND
20
NC
NC
NC
21
COM3_DCD
TX-
TX/RX-
22
COM1_DSR
–
–
23
COM3_RX
TX+
TX/RX+
24
COM1_RTS
–
–
25
COM3_TX
RX+
–
26
COM1_CTS
–
–
27
COM3_DTR
RX-
–
28
COM1_RI
–
–
29
GND
GND
GND
30
NC
NC
NC
31
COM4_DCD
TX-
TX/RX-
32
COM1_DSR
–
–
33
COM4_RX
TX+
TX/RX+
34
COM1_RTS
–
–
35
COM4_TX
RX+
–
36
COM1_CTS
–
–
37
COM4_DTR
RX-
–
38
COM1_RI
–
–
39
GND
GND
GND
40
NC
NC
NC
39
40
1
2
