EBC2
Functional Description
ID 29022, Rev. 01
© 2005 Kontron Modular Computers GmbH
Page 2 - 39
26873
.02.VC.050120/135439
P R E L I M I N A R Y
2.4.19
J21 - DIO Connector
This connector is used for providing four digital input and four digital output interfaces via the
EBC2 logic controller. It is a 10-pin, male, dual pinrow, shrouded header connector.
Both the four inputs and the four outputs are defined as +3.3V TTL signalling GPIO, whereby
the inputs accept 5V signal levels (up to a maximum of +5.5V DC). The digital outputs have a
drive capacity of a maximum of 24mA, reduced to 12mA to guarantee the TTL output levels
(0.4V Low and 2.4V High).
The digital general purpose I/O can be accessed via read/write cycles in the LPC IO-Space (off-
set address digital inputs: 0x00; offset address digital outputs: 0x01).
Figure 2-25: J21 - DIO Connector
Table 2-34: Pinout of J21
PIN
SIGNAL
1
DO0
2
DI0
3
DO1
4
DI1
5
DO2
6
DI2
7
DO3
8
DI3
9
+3.3V
10
GND
9
1
2
10
KEY