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 oscillator 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.