ad1988a Analog Devices, Inc., ad1988a Datasheet - Page 3

• Manufacturer Part Number: ad1988a
• Description: High Definition Audio Soundmax Codec
• Manufacturer: Analog Devices, Inc.

RESET#
BITCLK
DVFILT
DVDD
SYNC
DVSS
DVIO
SDO
SDI
+1.5V
(A D 1988L15 )
+3.3V
(A D 1988L33 )
+1.8V
+3.3V
H
D
A
U
D
O
N
E
R
A
C
E
T
F
I
I
+ /- 10 %
+ /- 10 %
+ /- 10 %
-20 %
+ 5 %
Selector
3 :1
N ID : 0 B
24 bit
192 kHz
PCM
Σ∆ DAC
24 bit
192 kHz
PCM
Σ∆ DAC
24 bit
192 kHz
PCM
Σ∆ DAC
24 bit
192 kHz
PCM
Σ∆ DAC
24 bit
192 kHz
PCM
Σ∆ DAC
Volume
Control
N ID : 1 F
GPIO
24 bit
192 kHz
PCM
Σ∆ ADC
24 bit
192 kHz
PCM
Σ∆ ADC
24 bit
192 kHz
PCM
Σ∆ ADC
HW
N ID : 0 8
N ID : 0 9
N ID : 0 F
ADC _ 0
ADC _ 1
ADC _ 2
0 (01 )
1 (0 B )
GPIO_1
M
M
-58 .5 to 0 dB
-58 .5 to 0 dB
-58 .5 to 0 dB
-58 .5 to 0 dB
-58 .5 to 0 dB
D i g i ta l
A
D i g i ta l
A
D i g i ta l
A
D i g i ta l
A
D i g i ta l
A
N ID : 1 D
ADC SE L_ 0
ADC SE L_ 1
ADC SE L_ 2
DAC _ 3
N ID : 0 6
DAC _ 2
N ID : 0 5
DAC _ 1
N ID : 0 4
DAC _ 0
N ID : 0 3
-58 .5 to + 22 .5 dB
-58 .5 to + 22 .5 dB
-58 .5 to + 22 .5 dB
N ID : 0 A
DAC _ 4
N ID : 0 C
N ID : 0 D
N ID : 0 E
D i g i ta l /
D i g i ta l /
D i g i ta l /
A na l o g
A na l o g
A na l o g
Σ
GM
GM
GM
GPIO_0 /
Volume
Selector
Selector
Selector
10 :1
10 :1
10 :1
9 (20 - M ixe r )
7 (25 – P or t- H )
6 (24 – P or t- G)
3 (3 B – P or t- F)
8 (3 D – P or t- D )
0 (38 – P or t- A )
1 (39 – P or t- B )
4 (3 C – P or t- E )
2 (3 A – P or t- C )
5 (18 - CD )
N ID : 0 7
N ID : 0 2
24 bit
32-192 kHz
PCM / D igital
S/PDIF T X
PCM / D igital
32-192 k Hz
S/PDIF R X
24 bit
NID: 20
GAM
GAM
6
5
FUNCTIONAL BLOCK DIAGRAM
Control
Σ
Power
Mixer
N ID : 1 9
-34 .5 to + 12 dB
Digital
AM
Digital
3
Inpu t_En
-58 .5 to 0 dB
GAM
7
GAM
GAM
0
2
1
4
5 (3 B – P or t- F)
-34.5 to +12dB
Output_En
Z
3 (3 D – P or t- D )
Figure 1. Block Diagram
GAM
GAM
GAM
GAM
AM
-46 .5 to 0 dB
Rev. 0 | Page 3 of 20
N ID : 1 C
N ID : 1 B
N ID : 2 1
Z
4 (34 – P or t- E /H /G)
0 (39 – P or t- B )
1 (33 – P or t- C /H /G)
2 (38 – P or t- A )
S/PDIF I n / GPIO_1
S/PDIF Out
GPIO_1
N ID : 3 3
N ID : 3 4
3 :1
3 :1
2 (24 )
1 (25 )
0 (3 A )
2 (24 )
1 (25 )
0 (3 C )
0 (05 )
1 (04 )
0 (04 )
1 (0 A )
0 (03 )
1 (04 )
2 (06 )
0 (03 )
1 (04 )
2 (06 )
0 (03 )
1 (04 )
2 (06 )
Digital Beep
N ID : 3 2
N ID : 3 1
N ID : 3 7
N ID : 3 6
N ID : 3 0
3 :1
3 :1
3 :1
2 :1
2 :1
N ID : 3 5
N ID : 2 3
MIC Bias Regulator
+3.3V +/-5%
VREF
0 (0 A )
1 (21 )
0 (06 )
1 (21 )
0 (05 )
1 (21 )
0 (04 )
1 (21 )
0 (37 )
1 (21 )
0 (36 )
1 (21 )
0 (30 )
1 (21 )
1 (21 )
0 (32 )
1 (21 )
0 (31 )
AM
Pow e r
Co ntrol
Po w e r
Co ntrol
N ID : 1 0
-45 .0 t o 0 d B
3 d B S tep s
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
AVSS
AVDD
N ID : 2 8
N ID : 2 A
N ID : 2 9
N ID : 2 2
N ID : 1 E
N ID : 2 B
N ID : 2 6
N ID : 2 C
N ID :2 7
Σ
Σ
Σ
Σ
Σ
Σ
Σ
Σ
Σ
AD1988A/AD1988B
MIC_BIAS_FILT
VREF_FILT
D own-M ix
N ID : 2 D
S te r e o
NID: 3B
NID: 3D
NID: 3C
NID: 3A
NID: 38
Σ
NID: 39
Boost
Boost
Boost
Boost
Boost
Boost
M
M
M
M
M
M
M
BIAS
BIAS /
EAPD
HP
AMP
BIAS
HP
AMP
BIAS
HP
AMP
BIAS
BIAS /
EAPD
EN
EN
Z
Z
M
-46 .5 to 0 dB
A
Split-Z
EN
EN
EN
EN
EN
EN
M
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Stereo Paths
Mono Paths
101+ dB (AD1988B)
S WA P
S WA P
A m p
C D
D i ff
N ID : 2 5
N ID : 1 6
N ID : 2 4
N ID : 1 2
N ID : 1 1
N ID : 1 4
N ID : 1 7
N ID : 1 5
N ID : 1 8
N ID : 1 3
N ID : 1 A
Surround
Center
Surround
Back
Center / LFE
HP-Front L/R
Headphone
Microphone
MIC 1/2
Line In
PORT -H
PORT -F
MIC BIAS
PORT -F
PORT -G
PORT -D
MIC BIAS /
EAPD
PORT -D
PORT -A
MIC BIAS
PORT -A
PORT -B
MIC BIAS
PORT -B
PORT -E
MIC BIAS
PORT -E
PORT -C
MIC BIAS /
EAPD
PORT -C
PCBeep
CD _L
CD _GND
CD _R
MONO_OUT