TDA9615 Ver la hoja de datos (PDF) - Philips Electronics
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TDA9615 Datasheet PDF : 44 Pages
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Philips Semiconductors
Audio processor for VHS hi-fi
Preliminary specification
TDA9615H
Output byte; subaddress 03 (output selection and control)
Table 16 Bits of output byte
BIT
LOH
OSN
OSR
OSL
EOS
LOS
DOS
RFCM
line output high; see Table 17
output select normal; see Table 18
output select right; see Table 18
output select left; see Table 18
envelope output select; see Table 20
line output select; see Table 21
decoder output select; see Table 22
RFC mute; see Table 23
DESCRIPTION
Table 17 Bit LOH; note 1
LOH
0
1
MODE
0 dB(2)
1 dB
no line output amplification
1 dB line output amplification
DESCRIPTION
Notes
1. An additional 1 dB amplification can be selected for line and decoder outputs LINEL, LINER, DECL and DECR
(pins 15, 16, 18 and 19).
2. POR.
Table 18 Bits OSN, OSR and OSL; notes 1 and 2
OSN
0
0
0
0
1
1
1
1
OSR
0
0
1
1
0
0
1
1
OSL
0
1
0
1
0
1
0
1
MODE
mute(3)
Left
Right
Stereo
Normal
Mix-Left
Mix-Right
Mix-Stereo
DESCRIPTION
mute; no selection
left hi-fi channel selected (language I)
right hi-fi channel selected (language II)
hi-fi stereo selected
normal selected (linear audio; LININ input)
mix of hi-fi left with normal (1⁄2hi-fi left + 1⁄2normal)
mix of hi-fi right with normal (1⁄2hi-fi right + 1⁄2normal)
mix of hi-fi stereo with normal (1⁄2hi-fi stereo + 1⁄2normal)
Notes
1. When no hi-fi signal is found on tape during ‘playback’ mode the auto-normal function is activated; all output select
function modes except ‘mute’ will be overruled and changed to ‘Normal’ mode. If muting of the hi-fi sound is desired
instead of selecting linear audio the normal input level (bits NIL3 to NIL0 of the select byte) should be set to mute.
Activation of the auto-normal function can be monitored by reading bit AUTN of the read byte.
2. If ‘Dub Mix’ mode is selected via the input select function (see control bits IS2, IS1 and IS0 of the input byte)
functionality of the modes ‘Mix-Left’, ‘Mix-Right’ and ‘Mix-Stereo’ are changed to support audio dubbing input mixing.
Hi-fi channel selection is offered for the input and normal sound is available at the output for monitoring of the linear
audio recording. See also Table 19.
3. POR.
1997 Jun 16
16
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