{"id":192,"date":"2013-11-05T21:26:42","date_gmt":"2013-11-06T02:26:42","guid":{"rendered":"http:\/\/proyectosfie.com\/renovado\/?page_id=192"},"modified":"2013-11-05T21:26:42","modified_gmt":"2013-11-06T02:26:42","slug":"puerto-paralelo","status":"publish","type":"page","link":"http:\/\/proyectosfie.com\/renovado\/electronica\/puertos\/puerto-paralelo\/","title":{"rendered":"PUERTO PARALELO"},"content":{"rendered":"

Introduccion<\/span><\/strong><\/p>\n

Existen dos metodos, de transmistir un dato hacia un periferico basicamente ( Serie \/ Paralelo).<\/span><\/p>\n

El envio de datos en forma paralela, es el que se usa en una impresora, basicamente, y actualmente tiene 5 modos<\/span><\/p>\n

Ordenador – Perif\u00e9rico :<\/strong>Compatibility Mode : \u00abCentronics\u00bb en modo standard.
\nPerif\u00e9rico – Ordenador :<\/strong>\u00a0Byte Mode :\u00a0<\/strong>8 bits al mismo tiempo usando l\u00edneas de datos, algunas veces puede funcionar como un puerto bi-direccional.
\nBi-direccional\u00a0<\/strong>
\nEPP :\u00a0<\/strong>Puerto Paralelo Ampliado, usado principalmente por perif\u00e9ricos como: CD-ROM, cintas, discos duros, adaptadores de redes, etc. excluyendo las impresoras.
\nECP :\u00a0<\/strong>Puerto con Capacidad Extendida, usado principalmente por scanners e impresoras de nueva generaci\u00f3n<\/span><\/p>\n

Hardware<\/span><\/strong><\/p>\n

Primero vamos a ver su Hardware Respectivo:<\/span><\/p>\n

\"\"<\/span><\/p>\n

Donde se diferencian claramente, 3 tipos de Letras, C, S, D. Cada una de estas se refieren al pin respectivo del registro que usan:<\/span><\/p>\n

C: Hace Referencia al Registro de Control<\/span><\/p>\n

S: Registro de Estado<\/span><\/p>\n

D: Registro de Datos<\/span><\/p>\n

Tabla general del puerto paralelo<\/span><\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\n
DB25<\/span><\/strong><\/div>\n<\/td>\n
\n
Se\u00f1al<\/span><\/strong><\/div>\n<\/td>\n
\n
Registro<\/span><\/strong><\/div>\n<\/td>\n
\n
Tipo<\/span><\/strong><\/div>\n<\/td>\n
\n
Activo<\/span><\/strong><\/div>\n<\/td>\n
\n
Sentido<\/span><\/strong><\/div>\n<\/td>\n<\/tr>\n
\n
1<\/span><\/strong><\/div>\n<\/td>\n
\n
Control 0<\/span><\/div>\n<\/td>\n
\n
C0 –<\/span><\/div>\n<\/td>\n
\n
Inout<\/span><\/strong><\/div>\n<\/td>\n
\n
Bajo<\/span><\/div>\n<\/td>\n
\n
Invertido<\/span><\/div>\n<\/td>\n<\/tr>\n
\n
2<\/span><\/strong><\/div>\n<\/td>\n
\n
Dato 0<\/span><\/div>\n<\/td>\n
\n
D0<\/span><\/div>\n<\/td>\n
\n
Out<\/span><\/strong><\/div>\n<\/td>\n
\n
Alto<\/span><\/div>\n<\/td>\n
\n
Directo<\/span><\/div>\n<\/td>\n<\/tr>\n
\n
3<\/span><\/strong><\/div>\n<\/td>\n
\n
Dato 1<\/span><\/div>\n<\/td>\n
\n
D1<\/span><\/div>\n<\/td>\n
\n
Out<\/span><\/strong><\/div>\n<\/td>\n
\n
Alto<\/span><\/div>\n<\/td>\n
\n
Directo<\/span><\/div>\n<\/td>\n<\/tr>\n
\n
4<\/span><\/strong><\/div>\n<\/td>\n
\n
Dato 2<\/span><\/div>\n<\/td>\n
\n
D2<\/span><\/div>\n<\/td>\n
\n
Out<\/span><\/strong><\/div>\n<\/td>\n
\n
Alto<\/span><\/div>\n<\/td>\n
\n
Directo<\/span><\/div>\n<\/td>\n<\/tr>\n
\n
5<\/span><\/strong><\/div>\n<\/td>\n
\n
Dato 3<\/span><\/div>\n<\/td>\n
\n
D3<\/span><\/div>\n<\/td>\n
\n
Out<\/span><\/strong><\/div>\n<\/td>\n
\n
Alto<\/span><\/div>\n<\/td>\n
\n
Directo<\/span><\/div>\n<\/td>\n<\/tr>\n
\n
6<\/span><\/strong><\/div>\n<\/td>\n
\n
Dato 4<\/span><\/div>\n<\/td>\n
\n
D4<\/span><\/div>\n<\/td>\n
\n
Out<\/span><\/strong><\/div>\n<\/td>\n
\n
Alto<\/span><\/div>\n<\/td>\n
\n
Directo<\/span><\/div>\n<\/td>\n<\/tr>\n
\n
7<\/span><\/strong><\/div>\n<\/td>\n
\n
Dato 5<\/span><\/div>\n<\/td>\n
\n
D5<\/span><\/div>\n<\/td>\n
\n
Out<\/span><\/strong><\/div>\n<\/td>\n
\n
Alto<\/span><\/div>\n<\/td>\n
\n
Directo<\/span><\/div>\n<\/td>\n<\/tr>\n
\n
8<\/span><\/strong><\/div>\n<\/td>\n
\n
Dato 6<\/span><\/div>\n<\/td>\n
\n
D6<\/span><\/div>\n<\/td>\n
\n
Out<\/span><\/strong><\/div>\n<\/td>\n
\n
Alto<\/span><\/div>\n<\/td>\n
\n
Directo<\/span><\/div>\n<\/td>\n<\/tr>\n
\n
9<\/span><\/strong><\/div>\n<\/td>\n
\n
Dato 7<\/span><\/div>\n<\/td>\n
\n
D7<\/span><\/div>\n<\/td>\n
\n
Out<\/span><\/strong><\/div>\n<\/td>\n
\n
Alto<\/span><\/div>\n<\/td>\n
\n
Directo<\/span><\/div>\n<\/td>\n<\/tr>\n
\n
10<\/span><\/strong><\/div>\n<\/td>\n
\n
Estado 6<\/span><\/div>\n<\/td>\n
\n
S6<\/span><\/div>\n<\/td>\n
\n
In<\/span><\/strong><\/div>\n<\/td>\n
\n
Alto<\/span><\/div>\n<\/td>\n
\n
Directo<\/span><\/div>\n<\/td>\n<\/tr>\n
\n
11<\/span><\/strong><\/div>\n<\/td>\n
\n
Estado 7<\/span><\/div>\n<\/td>\n
\n
S7-<\/span><\/div>\n<\/td>\n
\n
In<\/span><\/strong><\/div>\n<\/td>\n
\n
Bajo<\/span><\/div>\n<\/td>\n
\n
Invertido<\/span><\/div>\n<\/td>\n<\/tr>\n
\n
12<\/span><\/strong><\/div>\n<\/td>\n
\n
Estado 5<\/span><\/div>\n<\/td>\n
\n
S5<\/span><\/div>\n<\/td>\n
\n
In<\/span><\/strong><\/div>\n<\/td>\n
\n
Alto<\/span><\/div>\n<\/td>\n
\n
Directo<\/span><\/div>\n<\/td>\n<\/tr>\n
\n
13<\/span><\/strong><\/div>\n<\/td>\n
\n
Estado 4<\/span><\/div>\n<\/td>\n
\n
S4<\/span><\/div>\n<\/td>\n
\n
In<\/span><\/strong><\/div>\n<\/td>\n
\n
Alto<\/span><\/div>\n<\/td>\n
\n
Directo<\/span><\/div>\n<\/td>\n<\/tr>\n
\n
14<\/span><\/strong><\/div>\n<\/td>\n
\n
Control 1<\/span><\/div>\n<\/td>\n
\n
C1-<\/span><\/div>\n<\/td>\n
\n
Inout<\/span><\/strong><\/div>\n<\/td>\n
\n
Bajo<\/span><\/div>\n<\/td>\n
\n
Invertido<\/span><\/div>\n<\/td>\n<\/tr>\n
\n
15<\/span><\/strong><\/div>\n<\/td>\n
\n
Estado 3<\/span><\/div>\n<\/td>\n
\n
S3<\/span><\/div>\n<\/td>\n
\n
In<\/span><\/strong><\/div>\n<\/td>\n
\n
Alto<\/span><\/div>\n<\/td>\n
\n
Directo<\/span><\/div>\n<\/td>\n<\/tr>\n
\n
16<\/span><\/strong><\/div>\n<\/td>\n
\n
Control 2<\/span><\/div>\n<\/td>\n
\n
C2<\/span><\/div>\n<\/td>\n
\n
Inout<\/span><\/strong><\/div>\n<\/td>\n
\n
Alto<\/span><\/div>\n<\/td>\n
\n
Directo<\/span><\/div>\n<\/td>\n<\/tr>\n
\n
17<\/span><\/strong><\/div>\n<\/td>\n
\n
Control 3<\/span><\/div>\n<\/td>\n
\n
C3-<\/span><\/div>\n<\/td>\n
\n
Inout<\/span><\/strong><\/div>\n<\/td>\n
\n
Bajo<\/span><\/div>\n<\/td>\n
\n
Invertido<\/span><\/div>\n<\/td>\n<\/tr>\n
\n
18-25<\/span><\/strong><\/div>\n<\/td>\n
\n
Tierra<\/span><\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

LOS REGISTROS<\/span><\/strong><\/p>\n

Para usar este puerto, se debe tener en cuenta la direccion Base del puerto, que se encuentran en la Bios en las direcciones<\/span><\/p>\n\n\n\n\n\n\n
0000:0408<\/span><\/td>\nDirecci\u00f3n base para LPT1<\/span><\/td>\n<\/tr>\n
0000:040A<\/span><\/td>\nDirecci\u00f3n base para LPT2, generalment 378H<\/span><\/td>\n<\/tr>\n
0000:040C<\/span><\/td>\nDirecci\u00f3n base para LPT3<\/span><\/td>\n<\/tr>\n
0000:040E<\/span><\/td>\nDirecci\u00f3n base para LPT4<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Ahora teniendo esta direccion podemos ir a los demas registros siguiendo el siguiente orden:<\/span><\/p>\n\n\n\n\n\n
Registro Datos<\/span><\/td>\nBase<\/span><\/td>\n<\/tr>\n
Registro Estado<\/span><\/td>\nBase + 1<\/span><\/td>\n<\/tr>\n
Registro Control<\/span><\/td>\nBase + 2<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

REGISTRO De DATOS<\/span><\/strong><\/p>\n

Usado para enviar y recibir datos de 8 Bits, segun este configurado, el 5to bit del Registro de control, o la Bios (Esto se configura en el Setup)<\/span><\/p>\n

Para el puerto paralelo, casi siempre es 378H (LPT2)<\/span><\/p>\n

REGISTRO de ESTADO<\/span><\/strong><\/p>\n\n\n\n
~S7<\/span><\/td>\nS6<\/span><\/td>\nS5<\/span><\/td>\nS4<\/span><\/td>\nS3<\/span><\/td>\n\u00a0<\/span><\/td>\n\u00a0<\/span><\/td>\n\u00a0<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Tiene el Ultimo Bit negado, y solo recibe 5 Bits … en el LPT2 su direccion es 379H. Solo basta saber que por aqui siempre se pueden recibir datos<\/span><\/p>\n

sus bits tambien sirven para que cuando haya comunicacion con una impresora, sirvan para indicar si el puerto esta ocupado o no. Para este caso se usa:<\/span><\/p>\n\n\n\n\n\n\n\n
S3<\/span><\/td>\nError (FAULT)<\/span><\/td>\n<\/tr>\n
S4<\/span><\/td>\nSEL<\/span><\/td>\n<\/tr>\n
S5<\/span><\/td>\nPapel Vacio<\/span><\/td>\n<\/tr>\n
S6<\/span><\/td>\nAcuse de Recibo (ACKNOWLEDGE)<\/span><\/td>\n<\/tr>\n
~S7<\/span><\/td>\nBUSSY (Ocupado)<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

REGISTRO DE CONTROL<\/span><\/strong><\/p>\n\n\n\n
\u00a0<\/span><\/td>\n\u00a0<\/span><\/td>\n\u00a0<\/span><\/td>\n\u00a0<\/span><\/td>\n~C3<\/span><\/td>\nC2<\/span><\/td>\n~C1<\/span><\/td>\n~C0<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Al igual que el Registro de Estado, sirve para establecer comunicaci\u00f3n con la impresora, pero adem\u00e1s de eso, tambi\u00e9n nos sirve, para indicar si queremos que la impresora sea Bi-direccional. Para el LPT2 su direcci\u00f3n es 37AH<\/span><\/p>\n\n\n\n\n\n\n\n\n\n
\n
Pin<\/span><\/strong><\/div>\n<\/td>\n
\n
Nombre<\/span><\/strong><\/div>\n<\/td>\n
\n
Bit<\/span><\/strong><\/div>\n<\/td>\n<\/tr>\n
\n
~C0<\/span><\/div>\n<\/td>\n
Strobe<\/span><\/td>\n\n
Bit 0<\/span><\/div>\n<\/td>\n<\/tr>\n
\n
~C1<\/span><\/div>\n<\/td>\n
Nueva l\u00ednea autom\u00e1tica<\/span><\/td>\n\n
Bit 1<\/span><\/div>\n<\/td>\n<\/tr>\n
\n
C2<\/span><\/div>\n<\/td>\n
Inicializa impresora<\/span><\/td>\n\n
Bit 2<\/span><\/div>\n<\/td>\n<\/tr>\n
\n
~C3<\/span><\/div>\n<\/td>\n
Selecciona impresora<\/span><\/td>\n\n
Bit 3<\/span><\/div>\n<\/td>\n<\/tr>\n
\u00a0<\/span><\/td>\nPermite IRQ atrav\u00e9s de la l\u00ednea acknowledge<\/span><\/td>\n\n
Bit 4<\/span><\/div>\n<\/td>\n<\/tr>\n
\u00a0<\/span><\/td>\nPermite puerto Bidireccional<\/span><\/td>\n\n
Bit 5<\/span><\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\n","protected":false},"excerpt":{"rendered":"

Introduccion Existen dos metodos, de transmistir un dato hacia un periferico basicamente ( Serie \/ Paralelo). El envio de datos en forma paralela, es el que se usa en una impresora, basicamente, y actualmente tiene 5 modos Ordenador – Perif\u00e9rico :Compatibility Mode : \u00abCentronics\u00bb en modo standard. Perif\u00e9rico – Ordenador :\u00a0Byte Mode :\u00a08 bits al … Contin\u00fae leyendo PUERTO PARALELO<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":19,"menu_order":0,"comment_status":"open","ping_status":"open","template":"","meta":[],"yoast_head":"\n\n\n\n\n\n\n\n\n\n\n\n\n\t\n