AN10717 DMX512 communication using the LPC2000 - NXP ...
AN10717 DMX512 communication using the LPC2000 - NXP ...
AN10717 DMX512 communication using the LPC2000 - NXP ...
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<strong>NXP</strong> Semiconductors<br />
3. <strong>DMX512</strong> receiver<br />
USB<br />
6<br />
3 2<br />
5 4 1<br />
5V<br />
+<br />
3.1 Hardware<br />
10u<br />
<strong>AN10717</strong><br />
<strong>DMX512</strong> <strong>communication</strong> <strong>using</strong> <strong>the</strong> <strong>LPC2000</strong><br />
For <strong>the</strong> <strong>DMX512</strong> receiver part an LPC2103 is used (see Fig 4). UART1 of <strong>the</strong> LPC2103<br />
is used for <strong>the</strong> <strong>DMX512</strong> interface. Received dimming data is output on ports P0.16 to<br />
P0.23 connected to a buffer and eight LEDs.<br />
LD1117S33<br />
IN OUT<br />
GND<br />
LD1117S18<br />
IN OUT<br />
GND<br />
3V3<br />
22p<br />
100n<br />
12MHz<br />
47K<br />
100n<br />
Fig 4. <strong>DMX512</strong> - Slave test application<br />
22p<br />
100n<br />
100n<br />
11<br />
12<br />
20<br />
25<br />
26<br />
6<br />
5<br />
4<br />
17<br />
40<br />
42<br />
27<br />
7<br />
19<br />
43<br />
31<br />
X1<br />
X2<br />
RTCX1<br />
RTCX2<br />
RTCK<br />
RST<br />
VDD(1V8)<br />
VBAT<br />
VDD(3V3)<br />
VDD(3V3)<br />
VDDA<br />
DBGSEL<br />
VSS<br />
VSS<br />
VSS<br />
VSSA<br />
LPC2103<br />
P0.0<br />
P0.1<br />
P0.2<br />
P0.3<br />
P0.4<br />
P0.5<br />
P0.6<br />
P0.7<br />
P0.8/TXD1<br />
P0.9/RXD1<br />
P0.10<br />
P0.11<br />
P0.16<br />
P0.17<br />
P0.18<br />
P0.19<br />
P0.20<br />
P0.21<br />
P0.22<br />
P0.23<br />
P0.24<br />
P0.25<br />
P0.26<br />
P0.27<br />
P0.28<br />
P0.29<br />
13<br />
14<br />
18<br />
21<br />
22<br />
23<br />
24<br />
28<br />
29<br />
30<br />
35<br />
36<br />
37<br />
P0.12<br />
41<br />
P0.13<br />
44<br />
P0.14<br />
45<br />
P0.15<br />
46<br />
47<br />
48<br />
1<br />
2<br />
3<br />
32<br />
33<br />
34<br />
38<br />
39<br />
8<br />
9<br />
10<br />
15<br />
P0.30<br />
16<br />
P0.31<br />
47K<br />
3V3<br />
5V<br />
100n<br />
8<br />
VCC<br />
6<br />
1<br />
DO/RI<br />
7<br />
2<br />
RO DO/RI<br />
3<br />
RE<br />
4<br />
DE<br />
5<br />
DI GND<br />
<strong>AN10717</strong>_1 © <strong>NXP</strong> B.V. 2008. All rights reserved.<br />
Application note Rev. 01 — 1 July 2008 9 of 13<br />
10<br />
DS75176<br />
1<br />
19<br />
OE1<br />
OE2<br />
2<br />
4<br />
A1<br />
6<br />
A2<br />
8<br />
A3<br />
11<br />
A4<br />
13<br />
A5<br />
15<br />
A6<br />
17<br />
A7<br />
A8<br />
GND<br />
74LVC244<br />
VCC<br />
20<br />
18<br />
Y1<br />
16<br />
Y2<br />
14<br />
Y3<br />
12<br />
Y4<br />
9<br />
Y5<br />
7<br />
Y6<br />
5<br />
Y7<br />
3<br />
Y8<br />
3V3<br />
120e<br />
8 x LED<br />
1<br />
2<br />
3<br />
<strong>DMX512</strong>
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