24
Pin Name
I/O
Function
1
SDOS
I
SDTO source select pin
“L”: internal ADC output, “H”: DAUX input
ORed with serial control register if P/S = “L” (Connected to ground)
2
I2C
I
Serial control mode select pin
3
S MUTE
I
Soft mute pin
“H”: Soft mute ON, “L”: OFF
4
BCLK
I/O
Audio serial data clock pin
5
LRCK
I/O
Input/output channel clock pin
6
SDT11
I
DAC1 audio serial data input pin
7
SDT12
I
DAC2 audio serial data input pin
8
SDT13
I
DAC3 audio serial data input pin
9
SDTO
O
Audio serial data output pin
10
DAUX
I
AUX audio serial data input pin (Connected to ground)
11
DFS
I
Double speed sampling mode pin
“L”: normal speed, “H”: double speed
ORed with serial control register if P/S = “L”
12 – 13
DEM1 – DEM0
I
De-emphasis pin
ORed with serial control register if P/S = “L” (Connected to ground)
14
TVDD
—
Connected to digital power supply.
15
D. 5V
—
Digital power supply pin
16
D. GND
—
Digital ground pin
17
PDN
I
Power-down & reset pin
When “L”, the AK4527 is powered-down and the control registers are reset to default state.
If the state of CAD0-1 changes, then the AK4527 must be reset by PDN.
18
ICKS2
I
Input clock select 2 pin. (Connected to ground)
19
ICKS1
I
Input clock select 1 pin. (Connected to digital power supply)
20
ICKS0
I
Input clock select 0 pin. (Connected to digital power supply)
21
CAD1
I
Chip address pin
Used during the serial control mode. (Connected to ground)
22
CAD0
I
Chip address pin
Used during the serial control mode. (Connected to ground)
23
LOUT3
O
Lch #3 analog output pin
24
ROUT3
O
Rch #3 analog output pin
25
LOUT2
O
Lch #2 analog output pin
26
ROUT2
O
Rch #2 analog output pin
27
LOUT1
O
Lch #1 analog output pin
28
ROUT1
O
Rch #1 analog output pin
29
LIN–
I
Lch analog negative input pin
30
LIN+
I
Lch analog positive input pin
• IC1008 AK4527 A/D, D/A CONVERTER (DIGITAL BOARD)
Pin No.
