PARAGON DIGITAL™ GA3209-S01 PAL Configuration PRELIMINARY DATA SHEET DESCRIPTION • 2 channel WDRC processing The GA3209-S01 Product Abstraction Layer™ (PAL) provides an advanced, two channel Wide Dynamic Range Compression (WDRC) DSP system. A highly configurable digital signal processor enables strong fitting versatility with independent channel compression characteristics, including five parameter I/O curve adjustments (one of them calculated) and variable AGC time constants. All programmable parameters, including the crossover frequency, have generous adjustment ranges and excellent resolution. Each channel contains independent AGC control with Gennum's proven Twin Detector approach. • fully adjustable crossover frequency • AGC Detector in each channel with adjustable time constants (Single or Twin Detector) • flexible WDRC I/O curve adjustment (channel independent) • wideband gain adjustment with external VC option • notch filter (variable center and width) and dynamic depth (gain dependent) • soft squelch (low level expansion) with variable threshold and variable time constants Advanced features include low level expansion, a fully programmable notch filter with optional gain-dependent operation and a pure tone generator enabling in situ audiometry. • low cut filter • high cut filter • AGCO (variable threshold and time constants) • digital peak clipping option • low battery indicator • tone generator (programmable level and frequency) • 4 memories with full configuration storage GA3209 provides industry leading performance with an input dynamic range of 95dB, total system time delay of less than 2ms and low current consumption (below 900µA including transducers in most single microphone applications). GA3209 GA3209-S01 CHANNEL PROCESSING TWIN DETECTORS 70nF MIC 8 A/D LC FILTER Σ BAND SPLIT FILTER CHANNEL PROCESSING TWIN DETECTOR HC FILTER NOTCH FILTER PEAK CLIPPING D/A HBRIDGE 13 OUT+ 1 OUT- TONE GENERATOR TWIN DETECTORS SQUELCH AGC-O BLOCK DIAGRAM Doc.No.17367 - 1 [Rev. October 2001] 1 GA3209 FEATURES ELECTRICAL CHARACTERISTICS RANGE PARAMETER UNITS RESOLUTION ACCURACY MIN MAX 0.300 8 kHz N/A type 1,2 LC Filter Corner Frequency 0.125 8 kHz N/A type 1,2 HC Filter Corner Frequency 0.125 FILTER BANKS GA3209 Crossover Frequency FREQUENCY SHAPING LC and HC Filter Roll-Off Rate 8 12 kHz N/A type 1,2 dB/oct N/A N/A dB Table 2 type 3 INDEPENDENT CHANNEL PROCESSING Low Level Gain -18 42 High Level Gain -18 42 dB Table 2 type 3 Lower Threshold 30 110 dBSPL Table 2 type 3 Upper Threshold 30 110 dBSPL Table 2 type 3 Compression Ratio 1:1 100:1 Ratio Table 1 type 3 AGCi Attack Time Constant (Fast & Slow) 0.25 8192 ms Table 1 type 1,3 AGCi Release Time Constant (Fast & Slow) 0.25 8192 ms Table 1 type 1,3 Wideband System Gain -36 12 dB Table 2 type 3 Wideband Attack Time Constant (Fast & Slow) 0.25 8192 ms Table 1 type 1,3 Wideband Release Time Constant (Fast & Slow) 0.25 8192 ms Table 1 type 1,3 WIDEBAND SYSTEM GAIN Converter Gain See hardware Data Sheet Doc# 14437 External VC -48 0 dB Table 2 type 3 Internal VC Attenuator -48 0 dB Table 2 type 3 -19 83 dB N/A Note 1 -40 0 dBFS* Table 2 type 3 Ratio N/A N/A TOTAL SYSTEM GAIN Total System Gain AGCo AGCo Output Limiting ∞ :1 AGCo Compression Ratio AGCo Attack Time Constant (Fast & Slow) 0.25 8192 ms Table 1 type 1,3 AGCo Release Time Constant (Fast & Slow) 0.25 8192 ms Table 1 type 1,3 -40 0 dB Table 2 type 3 ratio N/A N/A dBSPL Table 2 type 3 PEAK CLIPPER PC Output Limiting LOW LEVEL EXPANSION (SOFT SQUELCH) Squelch Expansion Ratio Squelch Threshold 1:2 30 60 Squelch Attack Time Same as Wideband Fast Attack Time Constant Squelch Release Time Same as Wideband Fast Release Time Constant NOTCH FILTER NF Center Frequency 0.8 5 kHz N/A type 1,2 NF Attenuation 0 12 dB Table 1 N/A NF Bandwidth 1/12 1 octave Table 1 N/A * peak output is defined as largest sine wave possible at a the resonant frequency of the receiver 2 17367 - 1 ELECTRICAL CHARACTERISTICS (Continued) RANGE PARAMETER UNITS RESOLUTION ACCURACY MIN MAX Pure Tone Frequency 0.25 16 kHz Table 1 type 1,2 Pure Tone Amplitude -96 0 dBFS Table 2 type 3 TONE GENERATOR GA3209 NOTE 1: Total System Gain consists of Wideband System Gain + High and Low Independent Channel Gains + Converter Gain and accuracy of this parameter is dependent on accuracy of the components. Accuracy definitions: type 1: accuracy is determined by the clock frequency deviation type 2: accuracy is determined by the quantization error of 16bit coefficient and 20bit or higher data word. type 3: accuracy is determined by the quantization error of a parameter word (see table 2 for word length) and 20bit or higher data word. TABLE 1: Parameter Values Supported by GA3209-S01 PAL RATIO Compression Ratio 1 ; 1.016 ; 1.032 ; 1.050 ; 1.067 ; 1.085 ; 1.103 ; 1.123 ; 1.143 ; 1.164 ; 1.185 ; 1.210 ; 1.230 ; 1.255 ; 1.28 ; 1.31 ; 1.33 ; 1.36 ; 1.39 ; 1.42 ; 1.45 ; 1.49 ; 1.52 ; 1.56 ; 1.60 ; 1.64 ; 1.68 ; 1.73 ; 1.78 ; 1.83 ; 1.88 ; 1.94 ; 2.00; 2.06 ; 2.13 ; 2.21 ; 2.29 ; 2.37 ; 2.46 ; 2.56 ; 2.67 ; 2.78 ; 2.90 ; 3.05 ; 3.20; 3.37 ; 3.56 ; 3.76 ; 4.00 ; 4.27 ; 4.57 ; 4.92 ; 5.33 ; 5.82 ; 6.40 ; 7.11 ; 8.00 ; 9.14 ; 10.67 ; 12.80 ; 16.00 ; 21.33 ; 32.00 ; 64.00 ; 100 Attack and Release Time constant 0.25 ; 0.5 ; 1 ; 2 ; 4 ; 8 ; 16 ; 32 ; 64 ; 128 ; 256 ; 512 ; 1024 ; 2048 ; 4096 ; 8192 ms NF Attenuation 0 ; 6 ; 12 dB NF Bandwidth 1/12 ; 1/6 ; 1/4 ; 1/3 ; 1/2 ; 1 Pure Tone Frequency* 0.250 ; 0.500 ; 0.640 ; 0.800 ; 1.00 ; 1.28 ; 1.60 ; 2.00 ; 3.20 ; 4.00 ; 6.40 ; 8.00 ; 16.00 octave kHz *other frequencies are available with increased harmonics components GA3209 GA3209-S01 CHANNEL PROCESSING TWIN DETECTORS MIC 70nF A/D 8 LC FILTER 3k9 BAND SPLIT FILTER HC FILTER PEAK CLIPPING D/A HBRIDGE 13 OUT OUT+ LP FILTER 1 NOTCH FILTER CHANNEL PROCESSING TWIN DETECTOR Σ OUT- TONE GENERATOR TWIN DETECTORS SQUELCH AGC-O Fig. 1 Characterization Circuit CAUTION ELECTROSTATIC SENSITIVE DEVICES DO NOT OPEN PACKAGES OR HANDLE EXCEPT AT A STATIC-FREE WORKSTATION REVISION NOTES: Update to Block Diagram and document information. DOCUMENT IDENTIFICATION PRELIMINARY DATA SHEET The product is in a preproduction phase and specifications are subject to change without notice. For latest product information, visit www.gennum.com GENNUM CORPORATION GENNUM JAPAN CORPORATION MAILING ADDRESS: P.O. Box 489, Stn A, Burlington Ontario, Canada L7R 3Y3 Tel. +1 (905) 632-2996 fax: +1 (905) 632-2814 C-101, Miyamae Village, 2-10-42 Miyamae, Suginami-ku, Tokyo 168-0081, Japan Tel. +81 (3) 3334-7700 Fax: +81 (3) 3247-8839 SHIPPING ADDRESS: 970 Fraser Drive, Burlington, Ontario, Canada L7L 5P5 Gennum Corporation assumes no responsibility for the use of any circuits described herein and makes no representations that they are free from patent infringement. © Copyright October 2000 Gennum Corporation. All rights reserved. Printed in Canada. 3 17367 - 1