AK7770EQ Datasheet, PDF (7/22 Pages) Asahi Kasei Microsystems – Audio DSP with Multi-Channel Audio CODEC

[AK7770]
No. Pin name I/O
Function
Classification
26 LRCLK1 I Left/Right Clock Input 1 Pin
System clock
27
CLK1
I Master Clock 1 Pin
28 BITCLK1 I Bit Clock 1 Pin
29
SDIN1
I Serial Data Input 1 Pin
30 LRCLK2 I Left/Right Clock Input 2 Pin
Serial data
System clock
31
CLK2
I Master Clock 2 Pin
32 BITCLK2 I Bit Clock 2 Pin
33
SDIN2
I Serial Data Input 2 Pin
34
CAD1
I I2C Bus Address Pin 1
35
CAD0
I I2C Bus Address Pin 0
36
SCL
I I2C Clock Pin
I2C interface
I2C interface
I2C interface
37
DVDD
- Digital Power Supply Pin 3.3V(typ)
38
VSS3
- Digital Ground Pin 0V
39 DVDD18 - Digital Power Supply Pin 1.8V(typ)
Digital power
supply
40
SDA
I/O I²C Bus Data Clock Pin
SDA goes to “Hi-Z” during initial reset.
I2C interface
41
HPEN
O Headphone Detect Output Pin
Headphones
Initial reset for headphone search is determined by the state of HDT
42
STO
O Status Output Pin
When HDT = “H”, STO = “L”
Status
When HDT = “L”, STO = “H”
The output in initial reset is “H”
43
TX
O
S/PDIF transmitter Output Pin
S/PDIF data is output when
SELTX
[1:0]
bit=
“00”.
“L”
during
initial
rest.
TX
44
DVDD
- Digital Power Supply Pin 3.3V(typ)
45
VSS3
- Digital Ground Pin 0V
46 DVDD18 - Digital Power Supply Pin 1.8V(typ)
Digital power
supply
47
SDIN3
I Serial Data Input 3 Pin
Serial data
48 BITCLK3 I Bit Clock 3 Pin
49
CLK3
I Master Clock 3 Pin
System clock
50 LRCLK3
51 CKM [1]
52 TESTI3
I Left/Right Clock 3 Pin
I
Clock Mode Selection Pin
Connect to GND.
I Test Pin
This pin must be connected to DVDD.
Mode selection
Test
MS0699-E-01-PB
-7-
2008/06