STA310 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'STA310' PDF : 90 Pages View PDF
STA310
Type: R/W
Software Reset: 0
Hardware Reset: UND
Address: 0x82
Type: R/W
Reset value: 0xFF
Description:
The value in this register sets the PCM beep tone fre-
quency according to the formula:
Beep_tone_frequency = (Fs/2)/(Register_value+1)
9.20 Karaoke registers
This section describes the registers which select the
karaoke effects, for example: volume, chorus, echo,
reverb and mute. Any change to these registers must
be signalled to the DSP by writing 1 to the register.
KAR_MCh0VOL
Music channel 0 (L) volume
7
6
5
4
3
2
1
0
value
Address: 0x81
Type: R/W
Reset value: 0xFF
Description;
This register contains the scaling factor applied to the
left channel of the music input. It specifies a fractional
multiplication factor whose value varies from 0 to 1.0:
Music Left channel = original music left channel
scale_factor.
Bitfield
Description
Value
0x00: Scale factor 0 = left channel mute
0x7F: Scale factor 0.5 = half restitution of left
channel
0xFF: Scale factor 1.0 = full restitution of left
channel
KAR_MCh1VOL
Music channel 1 (R) volume
7
6
5
4
3
2
1
0
value
Description:
This register has the same function as
KAR_MCh0VOL for the right music channel.
KAR_KEYCONT
Key control (Pitch Shift) ON/OFF
7654321
Reserved
Address: 0x83
Type: R/W
Reset value: 0
0
PSHIFT
Description:.
Bitfield
Description
PSHIFT 0: pitch shift disabled, 1: pitch shift enabled
KAR_KEYVALUE
Key value
7
6
5
4
3
2
1
0
KEYVALUE
Address: 0x84
Type: R/W
Reset value: 0x00
Description:
The pitch shift can be changed from -3.5 to 3.5 tones,
in steps of 1/4 tone. This register sets the number of
tones according to the following table:
Key
control
(tone)
-1/ -1/ -3/ -1 - - - - -2.49 -3.5
424
1.1 1.3 1.5 1.9
6483
KEYVAL 0 1 2 3 4 5 6 7 8 9
UE
(decimal)
72/90
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