UMA1021M/C2 Philips Semiconductors (Acquired by NXP), UMA1021M/C2 Datasheet - Page 43

• Manufacturer Part Number: UMA1021M/C2
• Description: UDA1380; Stereo Audio Coder-decoder For MD, CD And MP3
• Manufacturer: Philips Semiconductors (Acquired by NXP)

Philips Semiconductors
Table 48 Mixer signal control setting bits
Table 49 Silence detector setting bits
Table 50 Oversampling input setting bits
11.11 Decimator volume control
Table 51 Register address 20H
Table 52 Description of register bits
2003 Apr 04
Symbol
Default
Symbol
Default
SD_VALUE1 SD_VALUE0
Stereo audio coder-decoder
for MD, CD and MP3
MIX_POS
15 to 8
7 to 0
OS1
BIT
BIT
BIT
0
1
0
1
0
0
1
1
0
0
1
1
ML_DEC[7:0]
MR_DEC[7:0]
MR_DEC7 MR_DEC6 MR_DEC5 MR_DEC4 MR_DEC3 MR_DEC2 MR_DEC1 MR_DEC0
ML_DEC7
SYMBOL
15
OS0
MIX
0
7
0
0
0
1
1
0
1
0
1
0
1
0
1
ML_DEC6
no mixing; default
volume of channel 1 is forced to 0 dB and volume of channel 2 is forced to
mixing is done before the sound processing: input signals are automatically scaled by
6 dB in order to prevent clipping during adding; after the addition, the 6 dB scaling is
compensated
mixing is done after the sound processing: input signals are automatically scaled in
order to prevent clipping during adding
3200 samples; default
4800 samples
9600 samples
19200 samples
single-speed input is normal input; mixing possible; default
double-speed input is after first half-band; no mixing possible
quad-speed input is in front of noise shaper; no mixing possible
reserved
ADC volume control left. An 8-bit value to program the gain of the decimator for left
and right independently. The ranges are +24 to 63.5 dB and
0.5 dB. The default setting is 0 dB (value 00000000), see Table 53.
ADC volume control right. An 8-bit value to program the gain of the decimator for
left and right independently. The ranges are +24 to 63.5 dB and
0.5 dB. The default setting is 0 dB (value 00000000), see Table 53.
14
0
6
0
ML_DEC5
13
0
5
0
ML_DEC4
43
12
0
4
0
DESCRIPTION
ML_DEC3
FUNCTION
FUNCTION
FUNCTION
11
0
0
3
ML_DEC2
10
0
2
0
ML_DEC1
Product specification
dB in steps of
9
0
1
0
UDA1380
dB in steps of
ML_DEC0
dB
8
0
0
0