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IC BLOCK DIAGRAM AND DESCRIPTION
AK4585AVF(24-Bit 192kHz ∆Σ ADC)
VCOM
OVF
VREFL
LIN+
Delta-Sigma
LIN-
Modulator
RIN+
Delta-Sigma
RIN-
Modulator
VREFR
TEST
AVDD
No. Pin Name
1
VREFL
2
AVSS
3
VCOM
4
LIN+
5
LIN−
6
CKS0
7
DVDD
8
DVSS
9
OVF
10
PDN
11
DIF
12
M/S
13
LRCK
14
BICK
15
SDTO
16
CKS1
17
MCLK
18
DFS0
19
HPFE
20
DFS1
21
BVSS
22
AVSS
23
AVDD
24
RIN−
25
RIN+
26
TEST
27
AVSS
28
VREFR
M/S DFS1 DFS0 CKS1 CKS0
Decimation
HPF
Filter
Audio I/F
Controller
Decimation
HPF
Filter
AVSS
DVDD
DVSS
BVSS
DIF
I/O
Lch Voltage Reference Input Pin, AVDD
I
Normally, connected to AVSS with a 10µF electrolytic capacitor and a 0.1µF
ceramic capacitor.
-
Analog Ground Pin
Common Voltage Output Pin, AVDD/2
O
Bias voltage of ADC input.
I
Lch Analog Positive Input Pin
I
Lch Analog Negative Input Pin
I
Master Clock Select 0 Pin
Digital Power Supply Pin, 3.0 ∼ 5.25V
-
-
Digital Ground Pin
Analog Input Overflow Detect Pin
O
This pin goes to "H" if analog input overflows.
Power Down Mode Pin
I
"H": Power up, "L": Power down
Audio Interface Format Pin
I
2
"H" : 24bit I
S Compatible, "L" : 24bit MSB justified
Master / Slave Mode Pin (Fixed to "L")
I
"L" : Slave Mode only
I
Output Channel Clock Pin
I
Audio Serial Data Clock Pin
O
Audio Serial Data Output Pin
I
Master Clock Select 1 Pin
I
Master Clock Input Pin
I
Sampling Speed Select 0 Pin
High Pass Filter Enable Pin
I
"H" : Enable, "L" : Disable
I
Sampling Speed Select 1 Pin
-
Substrate Ground Pin
-
Analog Ground Pin
Analog Power Supply Pin, 4.75 ∼ 5.25V
-
I
Rch Analog Negative Input Pin
I
Rch Analog Positive Input Pin
I
Test Pin
-
Analog Ground Pin
Rch Voltage Reference Input Pin, AVDD
I
Normally, connected to AVSS with a 10µF electrolytic capacitor and a 0.1µF
ceramic capacitor.
PDN
VREFL
AVSS
VCOM
LIN+
LIN-
LRCK
CKS0
BICK
DVDD
DVSS
MCLK
OVF
SDTO
PDN
DIF
M/S
LRCK
BICK
HPFE
Function
(Internal Pull-down Pin, typ. 100kΩ)
(Internal Pull-down Pin, typ. 100kΩ)
(Internal Pull-down Pin, typ. 100kΩ)
TX-NR1000
VREFR
1
28
AVSS
2
27
TEST
3
26
RIN+
4
25
RIN-
5
24
AVDD
6
23
7
22
AVSS
Top View
8
21
BVSS
9
20
DFS1
10
19
HPFE
11
18
DFS0
MCLK
12
17
CKS1
13
16
SDTO
14
15
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