Q67101-H6773 Просмотр технического описания (PDF) - Infineon Technologies

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Q67101-H6773

Joint Audio Decoder-Encoder - Multimode

Infineon Technologies 

Joint Audio Decoder-Encoder - Multimode

PSB 7238

Version 2.1

1.2

Feature List

Functions

– G.728 compression/decompression (16 Kbit/s)

– G.723 compression/decompression (6.3, 5.3 Kbit/s)

– G.722 compression/decompression for 7-kHz audio

(64, 56, 48 Kbit/s)

– G.711 compression/decompression (64 Kbit/s)

P-TQFP-100

– Outband controlled audio protocol with optimized

data rate

– Digital sampling rate conversion (16 kHz - 8 kHz) for G.722 audio with 8-kHz Codec

(bandwidth reduced to 3.4 kHz)

– Accepts/outputs uncompressed audio in 8-bit PCM A/µ law or 16-bit linear format

– Uncompressed/compressed audio switchable between different interface

combinations (IOM/Serial Audio Interface, IOM/Host, Host/Host)

– Inband controlled H.221/H.223 oriented audio protocol, e.g. for direct serial

connection to videocodec (VCP of 8×8 Inc., formerly IIT Inc.) as well as host based

solutions

– Stable reaction on interrupt handshake timing violations of e.g. a slow host

(Windows® PC)

System On-chip Functions

– Two universal serial HDLC/transparent data controllers

– IOM-2 monitor and C/I channels

– Generation of programmable system clock output

– Three programmable timers

– Programmable on-chip PLL for internal clock generation from ISDN low frequency

(7.68 MHz) clock

Type

PSB 7238

Semiconductor Group

Ordering Code

Q67101-H6773

7

Package

P-TQFP-100

Data Sheet 1998-07-01

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