Lpc Super I/O Device - Congatec conga-CEVAL User Manual

4.1.4.3

LPC Super I/O device

The conga‑CEVAL integrates a Super I/O controller that provides additional interfaces such as PS/2 keyboard and mouse, two serial ports, and
a parallel port. The Winbond W83627HG controller is connected to the LPC Bus of the COM Express™ module and the module must support
these interfaces in order for them to function. Refer to the module's user's guide for information about supported features.
The interfaces provided by this Super I/O controller are available on connectors X28, X38, X54 and X55. Both Serial port COM1 and COM2
are based on RS232 standard.
For the pinout of the mouse, keyboard, COM1, COM2, LPT1 and the Floppy port see the table below.
Pin LPT1 COM1
STROBE#
1 DCD#
2 PD0 RXD
3 PD1 TXD
4 PD2 DTR#
5 PD3 GND
6 PD4 DSR
7 PD5 RTS#
8 PD6 CTS#
9 PD7 RI#
10 ACK#
BUSY
11
12 PE
13 SEL
14 AUTOFD#
15 ERROR#
16 INIT#
17 SELIN#
18 GND
19 GND
20 GND
21 GND
22 GND
23 GND
24 GND
25 GND
Copyright © 2012 congatec AG
COM2 Mouse Keyboard
KBDAT
DCD# MSDAT
DSR N.C. N.C.
RXD GND GND
RTS# +5V +5V
KBCLK
TXD MSCLK
CTS# N.C. N.C.
DTR#
RI#
GND
+5V (750mA fuse)
CEVA_c_m10
X55
LPT1
VGA
COM1
(front view)
X54
Mouse
Keyboard
COM2
(X28)
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