AD1816A

–32–

REV. A

RIE

RW

Ring Interrupt Enable;

0

Ring Interrupt disabled

1

Ring Interrupt enabled

DIE

RW

DSP Interrupt Enable;

0

DSP Interrupt disabled

1

DSP Interrupt enabled

VIE

RW

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

Volume Interrupt disabled

1

Volume Interrupt enabled

TIE

RW

Timer Interrupt Enable;

0

Timer Interrupt disabled

1

Timer Interrupt enabled

CIE

RW

Capture Interrupt Enable;

0

Capture Interrupt disabled

1

Capture Interrupt enabled

PIE

RW

Playback Interrupt Enable;

0

Playback Interrupt disabled

1

Playback Interrupt enabled

[02] VOICE PLAYBACK SAMPLE RATE

DEFAULT = [0x1F40]

765432107654321

VPSR [15:8]

VPSR [7:0]

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

default playback sample rate is 8 kHz.

[03] VOICE CAPTURE SAMPLE RATE

DEFAULT = [0x1F40]

7654321076543210

VCSR [15:8]

VCSR [7:0]

VCSR [15:0] Voice Capture Sample Rate. The sample rate can be programmed from 4 kHz to 55.2 kHz in 1 hertz increments. Ig-

nored if CNP bit in SS [32] = 0 in which case VPSR [15:0] controls capture rate. The default capture sample rate is 8 kHz.

[04] VOICE ATTENUATION

DEFAULT = [0x8080]

7654321076543210

LVM

RES

LVA [5:0]

RVM

RES

RVA [5:0]

RVA [5:0]

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.

RVM

Right Voice Mute. 0 = Unmuted, 1 = Muted.

LVA [5:0]

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

LVM

Left Voice Mute. 0 = Unmuted, 1 = Muted.

[05] FM ATTENUATION

DEFAULT = [0x8080]

7654321076543210

LFMM

RES

LFMA [5:0]

RFMM

RES

RFMA [5:0]

RFMA [5:0] Right F Music Attenuation for the internal Music Synthesizer. The 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. The 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

DEFAULT = [0x8080]

7654321076543210

LS1M

RES

LS1A [5:0]

RS1M

RES

RS1A [5:0]

RS1A [5:0]

Right I