RTII(4)                 NetBSD Kernel Interfaces Manual                RTII(4)

NAME
     rtii -- AIMS Lab Radiotrack II FM radio device driver

SYNOPSIS
     option RADIO_TEA5759

     rtii0  at isa? port 0x20c
     rtii1  at isa? port 0x30c
     radio* at rtii0

DESCRIPTION
     The rtii driver provides support for the AIMS Lab Radiotrack II FM radio
     tuners.

     The Radiotrack II is a stereo FM tuner that allows to tune in the range
     87.5 - 108.0 MHz, report signal status on the current frequency, force
     audio output to mono, perform hardware signal search, and has an internal
     AFC.

     The Radiotrack II cards take only one I/O port.  The I/O port is set by
     the driver to the value specified in the configuration file and must be
     either 0x20c or 0x30c.

     Philips Semiconductors released two almost identical chips TEA5757 and
     TEA5759.  The TEA5757 is used in FM-standards in which the local oscilla-
     tor frequency is above the radio frequency (e.g. European and American
     standards).  The TEA5759 is the version in which the oscillator frequency
     is below the radio frequency (e.g. Japanese standards).  The option
     RADIO_TEA5759 changes the algorithm of frequency calculation for the
     TEA5757 based cards to conform with the Japanese standards.

SEE ALSO
     isa(4), radio(4)

HISTORY
     The rtii device driver appeared in OpenBSD 3.0 and NetBSD 1.6.

AUTHORS
     The rtii driver was written by Vladimir Popov and Maxim Tsyplakov.  The
     man page was written by Vladimir Popov.

NetBSD 6.0                      October 8, 2001                     NetBSD 6.0

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