AK2305 Datasheet, PDF (7/43 Pages) Asahi Kasei Microsystems – Dual PCM CODEC for ISDN TERMINAL ADAPTER

ASAHI KASEI
Pin# Name
25 FS1
27 BCLK
46 DTIN0
37 DTO00
38 DTO01
39 DTO02
40 DTO03
24 STD0
15 DTIN1
41 DTO10
42 DTO11
43 DTO12
44 DTO13
23 STD1
20 DTOE
22 TNOE0
21 TNOE1
8 AUX
9 TNOUT
34 DATA
35 SCLK
36 _CS
18 MUTE0
17 MUTE1
19 PD
5 LPC
4 VREF
31 DVDD
30 DVSS
6 AVDD
7 AVSS
45 TST1
16 TST2
[AK2305]
I/O
Function
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.
I 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).
I DTMF tone input of ch 0.
O Output of DTMF receiver 0. DTO00 is LSB.
O
O
O
O Steering to delay output of ch0. After the DTMF decoding, the output
latch is renewed and this output alters to high level.
I DTMF tone input.
O Output of DTMF receiver 1. DTO10 is LSB.
O
O
O
O Steering to delay output of ch0. After the DTMF decoding, the output
latch is renewed and this output alters to high level.
I Output enable pin for the DTMF receiver.
I Output enable pin for the tone generator 0.
I Output enable pin for the tone generator 1.
I External tone input pin. Input signal should be through more than 0.1uF
of an external capacitance.
O Tone output pin.
I/O Data input of serial interface.
I Clock input of serial interface.
I Read and write enable of serial interface.
I Active high input for ch0 mute.
I Active high input for ch0 mute.
I Active high input for all power down.
O Pin for PLL loop filter. Connect to AVSS with 0.22uF or larger.
O 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.
I Only for factory use. Should to be fixed to DVSS.
I
C0029-E-02
7
1999/8