Details, datasheet, quote on part number: PSB7238B
DatasheetDownload PSB7238B datasheet


Features, Applications
Product Brochure for JADE MM Joint Audio Decoder-Encoder PSB 7238, JADE MM

The PSB 7238 Joint Audio Decoder Encoder Multimode (JADE MM) is a device wich implements voice compression algorithms using the Low-Delay Code Excited Linear Prediction (LD-CELP) standard as defined in the ITU-T G.728 Recommendation, the Algebraic Code Excited Linear Prediction (ACELP) and the Multi-Pulse Maximum Likelihood Quantization. (MP-MLQ) standard as defined in the ITU-T G.723 Recommendation, and for 7 kHz voice using the Sub-Band Coded Adaptive Differential PCM (SBC-ADPCM) coding according to the G. 722 Recommendation. 1. Potential application

ISDN Videophones, Analog Videophones Video Conference Systems Data-over-voice and Voice-over-data terminals

G.728 Compression/Decompression (16 kbps) G.723 Compression/Decompression (6.3, 5.3 kbps) G.722 Compression/Decompression for 7 kHz audio 56, 48 kbps) G.711 Compression/Decompression (64 kbps) Digital sampling rate conversion (16kHz-8kHz) for G.722 audio with 8kHz Codec (bandwidth reduced to 3.4 kHz) Accepts/outputs uncompressed audio in 8-bit PCM A/ law or 16-bit linear format Uncompressed/compressed audio switchable between different interface combination (IOM/Serial Audio Interface, IOM/HOST, Host/Host) Inband controlled H.221/H223 oriented audio protocol. Outband controlled audio protocol with optimezed data rate Stable reaction on interrupt handschake timing violationsof e.g. a slow host (Windows PC) Two universal serial HDLC/transparent data controllers. 0.5 m CMOS technology Type PSB 7238 V1.2 Ordering Code Q67101-H6773 Package P-TQFP-100

6. Documentation (Please contact our sales office for details) Date of issue/version Errata Sheet V1.1-1.2 10/96 Preliminary Data Sheet V1.2 6/96 Preliminary Delta Sheet V1.2 6/96 Oscillator ,,external Circuit V1.1-1.2" 7/96 Preliminary Application Sheet 2/97 SRAM V1.1+1.2 7. Development and support tools Availabilty JADE AN Demo Board SIPB 7282 available 8. Applications Low-cost desk-top stand-alone videophone Type of material Copy


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