AK2305 Datasheet, PDF (2/43 Pages) Asahi Kasei Microsystems – Dual PCM CODEC for ISDN TERMINAL ADAPTER

ASAHI KASEI
CONTENTS
[AK2305]
ITEMS
PAGE
- BLOCK DIAGRAM….…………..……………………… 3
- PIN ASSIGNMENT….……………………………..…… 4
- PIN CONDITION……...………………………………… 5
- PIN FUNCTION…….…………………………………… 6
- CIRCUIT DESCRIPTION….….……………………...… 8
- FUNCTIONAL DESCRIPTION…….…..……………… 9
- PCM INTERFACE……….…………………….... 9
LONGFRAME/SHORTFRAME……….…… 10
GCI……………………………………..…….. 12
IDL…………………………………………….. 13
RESET…………………………………..…… 14
- POWER DOWN……..……………………..…… 15
- MUTE…………………………………….……… 17
- GAIN ADJUSTMENT….…..…………………… 18
- DTMF RECEIVER……………………………… 19
- TONE GENERATOR…………………..………. 21
- AUX INPUT…….……………………………….. 21
- SERIAL INTERFACE………….………….…… 22
- REGISTER……….……………………………………… 25
- ABSOLUTE MAXIMUM RATINGS……..…………..… 28
- RECOMMENDED OPERATING CONDITIONS…….. 28
- ELECTRICAL CHARACTERISTICS……..………...… 28
- APPLICATION CIRCUIT EXAMPLE…..…………...…39
- PACKAGE INFORMATION……..…………………..… 42
C0029-E-02
2
1999/8