AK7746 Datasheet, PDF (6/62 Pages) Asahi Kasei Microsystems – Audio DSP with 5-channel 24-bit ADC and Input Mux

[ASAHI KASEI]
[AK7746]
Pin No
23
Pin name
SDIN2
I/O
Function
Classification
I DSP serial data input pin (Internal pull-down )
Digital section
* Compatible with MSB justified 24 bits / LSB justified 24,20 and 16 bits Serial input data
24 SDIN1/JX0 I DSP serial data input / External condition jump
Digital section
(Internal pull-down )
Serial input data /
* Compatible with MSB justified 24 bits / LSB justified 24,20 and 16 bits Conditional input
* It can change its function as a conditional jump pin JX0 by control register
setting (JX0_E).
25 LRCLK_I I LR channel select clock input
System Clock
Slave mode (SMODE=”L”) : Input the fs clock.
Master mode (SMODE=”H”): Connect to DVSS.
26 BITCLK_I I Serial bit clock input
Slave mode: Input 64 fs or 48 fs clocks.
When it uses only for master mode then connect to DVSS. (SMODE=”H”)
27
SMODE
I Slave / Master mode selector
Control
SMODE=”L”: Slave mode.
SMODE=”H”: Master mode.
28
DVDD
- Digital Power supply pin 3.3V (typ)
Digital
29
DVSS
- Digital Ground pin 0.0V
Power supply
30 BITCLK_O O Serial bit clock output
System clock
Master mode (SMODE=”H”) : Outputs 64fs clock.
Slave mode (SMODE=”L” ) : Outputs BITCLK_I clock.
31 LRCLK_O O LR channel select clock output
Master mode (SMODE=”H”) : Outputs the fs clock.
Slave mode (SMODE=”L”) : Outputs LRCLK_I clock.
32
CLKO
O Clock output
Output frequency can be selectable by control register.
System clock
33
XTO
O Crystal oscillator output
System clock
When crystal oscillator is used, it should be connected to this pin and XTI.
When the external clock is used, keep this pin open.
34
XTI
I Master clock input
Connect a crystal oscillator between this pin and the XTO pin,
Or input the external CMOS clock signal to XTI pin.
35
DVSS
- Digital Ground pin 0.0V
Digital
36
DVDD
- Digital Power supply pin 3.3V (typ)
Power supply
[MS0369-E00]
-6-
2004/12