External Junctions (Connectors) - Analog Devices ADUC824 Reference Manual

(4) E
J1 Serial Interface Connector
J1 provides a simple connection of the evaluation board to the PC via a PC serial port cable (provided
with the ADuC824 QuickStart Development System).
J2 Analog I/O Connector
The analog I/O connector J2 carries all ADC inputs and DAC output channels as well as the external V
input. The pinout and orientation of this connector is shown below.
Pin
1
2
3
4
5
6
7
8
9
J3 (Timer/Strobe)
The timer/strobe control signals on the ADuC824 are all brought out to a 10 way connection port just
above the prototyping. The exact pinouts of the ports are shown in table 2 with reference to the connector
shown in figure 3 below.
Version 1.0
ADuC824 Evaluation Board Reference Guide
J
XTERNAL UNCTIONS
2 4 6 8
3 5 7
1
Figure 2: The Analog I/O connector J2
Function
DGND
DVDD
AGND
AVDD
IEXC1/DAC (pin3)
IEXC2/AIN5
REFIN+
REFIN-
AIN1
Table 1: Pin functions for Analog I/O connector J2
4
2
3
1
Figure 3: 10 way Connector Port
Page 10 of 14
(C
ONNECTORS
10 12 14 16
9
11 13 15
Pin Function
10 AIN2
11 AIN3
12 AIN4/DAC (pin12)
13 DAC O/P (Buffered)
14 O/P OpAmp (Spare)
15 2.5V AD780 O/P
16 In(+) OpAmp (Spare)
17 In(-) OpAmp (Spare)
18 AGND
6 10
8
9
5 7

(4) External Junctions (Connectors)

):
18
17
Analog Devices Inc., MicroConverter
www.analog.com/microconverter
REF
®