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Manual Pages  — LPBB

NAME

lpbb – parallel port I2C bit-banging interface

CONTENTS

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.

LPBB (4) October 25, 1998

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