參數(shù)資料
型號(hào)： AD1821
廠商： Analog Devices, Inc.
元件分類： Codec
英文描述： MODIO(Modem over Audio) SoundComm Host Signal Processing Codec(音頻調(diào)制SoundComm型主信號(hào)處理編解碼器)
中文描述： MODIO（調(diào)制解調(diào)器多音頻）SoundComm主機(jī)信號(hào)處理編解碼器（音頻調(diào)制SoundComm型主信號(hào)處理編解碼器）
文件頁(yè)數(shù)： 31/44頁(yè)
文件大?。?/td> 284K
代理商： AD1821
AD1821
–31–
REV. 0
RIE
RW
Ring Interrupt Enable;
0
Ring Interrupt disabled
1
Ring Interrupt enabled
DSP Interrupt Enable;
0
DSP Interrupt disabled
1
DSP Interrupt enabled
Volume Interrupt Enable. If enabled, software increments/decrements BUT T ON MODIFIER via
interrupt routine and pushing buttons only sets VUP, VDN, VMU bits. It does not change the volume.
0
Volume Interrupt disabled
1
Volume Interrupt enabled
T imer Interrupt Enable;
0
T imer Interrupt disabled
1
T imer Interrupt enabled
Capture Interrupt Enable;
0
Capture Interrupt disabled
1
Capture Interrupt enabled
Playback Interrupt Enable;
0
Playback Interrupt disabled
1
Playback Interrupt enabled
DIE
RW
VIE
RW
T IE
RW
CIE
RW
PIE
RW
[02] VOIC E PL AY BAC K SAMPL E RAT E
7
6
5
DE FAULT = [0x1F40]
2
4
3
2
1
0
7
6
5
4
3
1
VPSR [15:8]
VPSR [7:0]
VPSR [15:0] Voice Playback Sample Rate. T he sample rate can be programmed from 4 kHz to 55.2 kHz in 1 hertz increments. T he
default playback sample rate is 8 kHz.
[03] VOIC E C APT URE SAMPL E RAT E
7
6
5
DE FAULT = [0x1F40]
2
4
3
2
1
0
7
6
5
4
3
1
0
VCSR [15:8]
VCSR [7:0]
VCSR [15:0] Voice Capture Sample Rate. T he sample rate can be programmed from 4 kHz to 55.2 kHz in 1 hertz increments.
Ignored if CNP bit in SS [32] = 0 in which case VPSR [15:0] controls capture rate. T he default capture sample rate
is 8 kHz.
[04] VOIC E AT T E NUAT ION
7
6
LVM
RES
DE F AUL T = [0x8080]
2
RVA [5:0]
5
4
3
LVA [5:0]
2
1
0
7
6
5
4
3
1
0
RVM
RES
RVA [5:0]
Right Voice Attenuation for Playback channel. T he LSB represents –1.5 dB, 000000 = 0 dB and the range is
0 dB to –94.5 dB.
Right Voice Mute. 0 = Unmuted, 1 = Muted.
Left Voice Attenuation for Playback channel. T he LSB represents –1.5 dB, 000000 = 0 dB and the range is
0 dB to –94.5 dB
Left Voice Mute. 0 = Unmuted, 1 = Muted.
RVM
LVA [5:0]
LVM
[05] F M AT T E NUAT ION
7
6
LFMM
RES
DE F AUL T = [0x8080]
2
RFMA [5:0]
5
4
3
2
1
0
7
6
5
4
3
1
0
LFMA [5:0]
RFMM
RES
RFMA [5:0] Right F Music Attenuation for the internal Music Synthesizer. T he LSB represents –1.5 dB, 000000 = 0 dB and
the range is 0 dB to –94.5 dB.
RFMM
Right F Music Mute. 0 = Unmuted, 1 = Muted.
LFMA [5:0]
Left F Music Attenuation for the internal Music Synthesizer. T he LSB represents –1.5 dB, 000000 = 0 dB and the
range is 0 dB to –94.5 dB.
LFMM
Left F Music Mute. 0 = Unmuted, 1 = Muted.
[06] I
2
S(1) AT T E NUAT ION
7
6
L S1M
RES
DE F AUL T = [0x8080]
2
RS1A [5:0]
5
4
3
2
1
0
7
6
5
4
3
1
0
LS1A [5:0]
RS1M
RES
RS1A [5:0]
Right I
2
S(1) Attenuation register. T he LSB represents –1.5 dB, 000000 = 0 dB and the range is 0 dB to –94.5 dB.
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