mirror of
https://github.com/freebsd/freebsd-src
synced 2024-11-05 18:22:52 +00:00
79 lines
3.4 KiB
Groff
79 lines
3.4 KiB
Groff
.\" Copyright (c) 1998, Nicolas Souchu
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\"
|
|
.Dd October 25, 1998
|
|
.Dt LPBB 4
|
|
.Os FreeBSD
|
|
.Sh NAME
|
|
.Nm lpbb
|
|
.Nd
|
|
Parallel port I2C bit-banging interface
|
|
.Sh SYNOPSIS
|
|
.Cd "controller iicbus"
|
|
.Cd "controller iicbb0"
|
|
.Pp
|
|
.Cd "device lpbb0 at ppbus?"
|
|
.Cd "device iic0 at iicbus?"
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Em lpbb
|
|
driver supports the Philips official I2C parallel bit-banging interface.
|
|
.Pp
|
|
|
|
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 -------------------------------------------------------
|
|
.Pp
|
|
.Sh SEE ALSO
|
|
.Xr iicbus 4 ,
|
|
.Xr iicbb 4 ,
|
|
.Xr ppbus 4
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
manual page first appeared in
|
|
.Fx 3.0 .
|
|
.Sh AUTHOR
|
|
This
|
|
manual page was written by
|
|
.An Nicolas Souchu .
|