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LPBB(4)		       FreeBSD Kernel Interfaces Manual		       LPBB(4)

NAME
     lpbb -- parallel port I2C bit-banging interface

SYNOPSIS
     device iicbus
     device iicbb

     device lpbb
     device iic

DESCRIPTION
     The lpbb driver supports the Philips official I2C parallel	bit-banging
     interface.

					      LS05 pin 14 (Vcc)	o      -------
								|      |     |
		 +--+--+---------------------+--+--+------------+------+-o 1 |
		 |  |  |		     |	|  |	       ===.1uF | +5V |
       --------	[R][R][R] 3x10K	      3x10K [R][R][R]	LS05	|      |     |
       |      |	 |  |  |		     |	|  |	pin 7 o-+------+-o 2 |
       | 12 o-+--+  |  |   3|\ 4	     |	|  |	(Gnd)	       | GND |
       | 17 o-+-----|--|----| >o-------------+--|--|--------------+    |     |
       |      |	    |  |    |/	      8	/|9	|  |	 10 /|11  +----+-o 3 |
       | 15 o-+-----+--|--------------o< |------+--|------o< |----+    | SCL |
       |      |	       |   1|\ 2	\|	   |	    \|	       |     |
       |  9 o-+--------|----| >o-------------------+--------------+----+-o 4 |
       |      |	       |    |/				  6 /|5	  |    | SDA |
       | 11 o-+--------+----------------------------------o< |----+    -------
       | 10 o-+-+					    \|		4-pin
       | 13 o-+-+--oGND						     Connector
       | 25 o-+-+      ------------------ Part List --------------------------
       --------	       | 1 - .1	uF capacitor   | 6 - 10K 5% resistors	     |
       25-pin male D   | 1 - 4-pin connector   | 1 - 25-pin male D connector |
       connector to PC | 1 - 74LS05 open collector hex inverter		     |
       printer port    -------------------------------------------------------

SEE ALSO
     iicbb(4), iicbus(4), ppbus(4)

HISTORY
     The lpbb manual page first	appeared in FreeBSD 3.0.

AUTHORS
     This manual page was written by Nicolas Souchu.

FreeBSD	Ports 11.2	       October 25, 1998		    FreeBSD Ports 11.2

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | HISTORY | AUTHORS

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=lpbb&sektion=4&manpath=FreeBSD+12.0-RELEASE+and+Ports>

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