PSB7280 데이터 시트보기 (PDF) - Infineon Technologies

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PSB7280

Joint Audio Decoder-Encoder

Infineon Technologies 

Joint Audio Decoder-Encoder

PSB 7280

Version 3.1

1.2

Feature List

CMOS

Functions

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

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

(64, 56, 48 kbit/s)

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

– Digital sampling rate conversion (16 kHz - 8 kHz) for P-TQFP-100

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

– Outband controlled audio protocol with optimized data rate

– 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 7280

Semiconductor Group

Ordering Code

Q67101-H6773

7

Package

P-TQFP-100

Data Sheet 1998-07-01

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