ASAHI
Pin#
25
KASEI
Name
FS1
I/O
I
Function
[AK2305]
27
46
37
38
39
40
24
15
41
42
43
44
23
20
22
21
8
9
34
35
36
18
17
19
5
4
31
30
6
7
45
16
BCLK
DTIN0
DTO00
DTO01
DTO02
DTO03
STD0
DTIN1
DTO10
DTO11
DTO12
DTO13
STD1
DTOE
TNOE0
TNOE1
AUX
TNOUT
DATA
SCLK
CS
I
I
O
O
O
O
O
I
O
O
O
O
O
I
I
I
I
O
I/O
I
I
I
I
I
O
O
-
-
-
-
I
I
Frame sync input for channel 1.
FS1 must be 8KHz clock synchronized in BCLK.
In GCI / IDL mode, this pin is pulled down to VSS.
Bit clock of PCM data interface. This clock is apply for both ch0 and ch1.
BCLK should be synchoronized with 8 x N kHz(FSn x N kHz).
DTMF tone input of ch 0.
Output of DTMF receiver 0. DTO00 is LSB.
Steering to delay output of ch0. After the DTMF decoding,
latch is renewed and this output alters to high level.
DTMF tone input.
Output of DTMF receiver 1. DTO10 is LSB.
the output
MUTE0
MUTE1
PD
LPC
VREF
DVDD
DVSS
AVDD
AVSS
TST1
TST2
Steering to delay output of ch0. After the DTMF decoding, the output
latch is renewed and this output alters to high level.
Output enable pin for the DTMF receiver.
Output enable pin for the tone generator 0.
Output enable pin for the tone generator 1.
External tone input pin. Input signal should be through more than 0.1uF
of an external capacitance.
Tone output pin.
Data input of serial interface.
Clock input of serial interface.
Read and write enable of serial interface.
Active high input for ch0 mute.
Active high input for ch0 mute.
Active high input for all power down.
Pin for PLL loop filter. Connect to AVSS with 0.22uF or larger.
Analog ground output.
To stabilize the analog ground, connect to AVSS with 0.1uF or larger.
Digital positive supply voltage. System digital +5V supply.
Digital negative supply voltage. System digital ground.
Analog positive supply voltage. Systems analog +5V supply.
Analog negative supply voltage. System analog ground.
Only for factory use. Should to be fixed to DVSS.
C0029-E-02
7
1999/8
AKM [ ASAHI KASEI MICROSYSTEMS ]
