AK4366_04 Datasheet, PDF (4/31 Pages) Asahi Kasei Microsystems – Low Power 24-Bit 2ch DAC with HP-AMP

ASAHI KASEI
[AK4366]
PIN/FUNCTION
No. Pin Name
1 ^MUTEN
CDTI
2 ^DEM
CCLK
3 ^DIF0
CSN
4 SDATA
5 LRCK
6 BICK
7 MCLK
8 PDN
9 P/S
10 VCOM
11 MUTET
12 VDD
13 VSS
14 HVDD
15 HPR
16 HPL
I/O
Function
I
Headphone Amp Mute Pin (P/S pin = “H”)
“H”: Normal operation, “L”: Mute
I Control Data Input Pin (P/S pin = “L”)
I
De-emphasis Pin (P/S pin = “H”)
“H”: ON(44.1kHz), “L”: OFF
I Control Data Clock Pin (P/S pin = “L”)
I
Audio Interface Format Pin (P/S pin = “H”)
“H”: I²S, “L”: 24bit MSB justified
I Control Data Chip Select Pin (P/S pin = “L”)
I Audio Serial Data Input Pin
I
L/R Clock Pin
This clock determines which audio channel is currently being input on SDATA pin.
I
Serial Bit Clock Pin
This clock is used to latch audio data.
I Master Clock Input Pin
Power-down & Reset Pin
I When at “L”, the AK4366 is in power-down mode and is held in reset.
The AK4366 should always be reset upon power-up.
I
Control Mode Select Pin (Internal Pull-down Pin)
“H”: Parallel, “L”: 3-wire Serial
Common Voltage Output Pin
O Normally connected to VSS pin with 0.1µF ceramic capacitor in parallel with a 2.2µF
electrolytic capacitor.
O
Mute Time Constant Control Pin
Connected to VSS pin with a capacitor for mute time constant.
- Power Supply Pin
- Ground Pin
- Power Supply Pin for Headphone Amp
O Rch Headphone Amp Output Pin
O Lch Headphone Amp Output Pin
Note: All digital input pins except internal pull-down pin must not be left floating.
„ Handling of Unused Pin
The unused I/O pins should be processed appropriately as below.
Classification
Analog
Digital
Pin Name
MUTET, HPR, HPL
DEM, DIF0
Setting
These pins should be open.
These pins should be connected to VSS.
MS0248-E-01
-4-
2004/03