AD1821 Analog Devices, AD1821 Datasheet - Page 31

• Manufacturer Part Number: AD1821
• Manufacturer: Analog Devices

REV. 0
RIE
DIE
VIE
TIE
CIE
PIE
VPSR [15:0] Voice Playback Sample Rate. The sample rate can be programmed from 4 kHz to 55.2 kHz in 1 hertz increments. The
VCSR [15:0] Voice Capture Sample Rate. The sample rate can be programmed from 4 kHz to 55.2 kHz in 1 hertz increments.
RVA [5:0]
RVM
LVA [5:0]
LVM
RFMA [5:0] Right F Music Attenuation for the internal Music Synthesizer. The LSB represents –1.5 dB, 000000 = 0 dB and
RFMM
LFMA [5:0] Left F Music Attenuation for the internal Music Synthesizer. The LSB represents –1.5 dB, 000000 = 0 dB and the
LFMM
RS1A [5:0]
LVM
LFMM
LS1M
[02] VOICE PLAYBACK SAMPLE RATE
[03] VOICE CAPTURE SAMPLE RATE
[06] I
[04] VOICE ATTENUATION
[05] FM ATTENUATION
7
7
7
7
7
2
S(1) ATTENUATION
RES
RES
RES
6
6
6
6
6
RW
RW
RW
RW
RW
RW
default playback sample rate is 8 kHz.
Ignored if CNP bit in SS [32] = 0 in which case VPSR [15:0] controls capture rate. The default capture sample rate
is 8 kHz.
Right Voice Attenuation for Playback channel. The 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. The 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.
the range is 0 dB to –94.5 dB.
Right F Music Mute. 0 = Unmuted, 1 = Muted.
range is 0 dB to –94.5 dB.
Left F Music Mute. 0 = Unmuted, 1 = Muted.
Right I
5
5
5
5
5
2
S(1) Attenuation register. The LSB represents –1.5 dB, 000000 = 0 dB and the range is 0 dB to –94.5 dB.
VCSR [15:8]
Ring Interrupt Enable;
0
1
DSP Interrupt Enable;
0
1
Volume Interrupt Enable. If enabled, software increments/decrements BUTTON MODIFIER via
interrupt routine and pushing buttons only sets VUP, VDN, VMU bits. It does not change the volume.
0
1
Timer Interrupt Enable;
0
1
Capture Interrupt Enable;
0
1
Playback Interrupt Enable;
0
1
VPSR [15:8]
4
4
4
4
4
LFMA [5:0]
LS1A [5:0]
LVA [5:0]
3
3
3
3
3
Ring Interrupt disabled
Ring Interrupt enabled
DSP Interrupt disabled
DSP Interrupt enabled
Volume Interrupt disabled
Volume Interrupt enabled
Timer Interrupt disabled
Timer Interrupt enabled
Capture Interrupt disabled
Capture Interrupt enabled
Playback Interrupt disabled
Playback Interrupt enabled
2
2
2
2
2
1
1
1
1
1
0
0
0
0
0
–31–
RFMM
RS1M
RVM
7
7
7
7
7
RES
RES
RES
6
6
6
6
6
5
5
5
5
5
VCSR [7:0]
VPSR [7:0]
4
4
4
4
4
3
3
3
3
3
DEFAULT = [0x1F40]
RFMA [5:0]
RS1A [5:0]
RVA [5:0]
DEFAULT = [0x8080]
DEFAULT = [0x1F40]
DEFAULT = [0x8080]
DEFAULT = [0x8080]
2
2
2
2
2
AD1821
1
1
1
1
1
0
0
0
0