参数资料
型号: MAS3587F
厂商: Electronic Theatre Controls, Inc.
元件分类: 通用总线功能
英文描述: MPEG Layer 3 Audio Encoder/Decoder
中文描述: MPEG层3音频编码器/解码器
文件页数: 44/83页
文件大小: 734K
代理商: MAS3587F
MAS 3587F
ADVANCE INFORMATION
44
Micronas
OUTPUT MODE SELECT
00 06
00 07
D/A Converter Source Mixer
MIX ADC scale
MIX DSP scale
bit[15:8]
00
hex
... 7F
hex
Linear scaling factor (hex)
for example:
00
hex
20
hex
40
hex
7F
hex
off
50 % (
6 dB gain)
100 % (0 dB gain)
200 % (+6 dB gain)
In the sum of both mixing inputs exceeds 100 %, clipping may occur in the
successive audio processing.
DAC_IN_ADC
DAC_IN_DSP
00 0E
D/A Converter Output Mode
bit[15]
Mono switch
0
1
stereo through
mono matrix applied
bit[14]
Invert right channel
0
1
through
right channel is inverted
bit[1:0]
Reserved, must be set to 0
In order to achieve more output power a single loudspeaker can be connected
as a bridge between pins OUTL and OUTR. In this mode bit[15] and bit[14]
must be set.
DAC_OUT_MODE
BASEBAND FEATURES
00 14
Bass
bit[15:8]
Bass range
60
hex
58
hex
...
08
hex
00
hex
F8
hex
...
A8
hex
A0
hex
+
12 dB
+
11 dB
+
1 dB
0 dB
1 dB
11 dB
12 dB
Higher resolution is possible, one LSB step results in a gain step of about
1/8 dB.
With positive bass settings clipping of the output signal may occur. Therefore,
it is not recommended to set bass to a value that, in conjunction with volume,
would result in an overall positive gain.
The settings require: max (bass, treble) + loudness + volume
0 dB
bit[7:0]
Not used, must be set to 0
BASS
Table 3
12:
Codec control registers on I
2
C subaddress 6C
hex
Register
Address
(hex)
Function
Name
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