MT8964 Zarlink Semiconductor, Inc., MT8964 Datasheet
MT8964
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MT8964 Summary of contents
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... A-Law: MT8961/63/65/67 • Low power consumption: Op typ. Stby.: 2.5 mW typ. • Digital Coding Options: MT8964/65/66/67 CCITT Code MT8960/61/62/63 Alternative Code • Digitally controlled gain adjust of both filters • Analog and digital loopback • Filters and codec independently user accessible for testing • ...
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MT8960/61/62/63/64/65/66/67 MT8960/61/64/65 1 CSTi 2 DSTi C2i 3 DSTo 4 5 VDD F1i SD3 8 SD2 9 18 PIN CERDIP/PDIP Pin Description Pin Name CSTi Control ST-BUS TTL-compatible digital input used to control the ...
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... Analog Input Voltage (V Bit 7... 0 MSB LSB Figure 4 - A-Law Encoder Transfer Characteristic MT8964/66 Digital Output 10000000 10001111 10011111 10101111 10111111 11001111 11011111 11101111 11111111 01111111 01101111 01011111 01001111 00111111 00101111 00011111 ...
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... Bits 0-3 represent the step value of the analog sample within the selected chord. The MT8960-63 provide a sign plus magnitude PCM output code format. The MT8964/66 PCM output code conforms to the AT &T D3 specification, i.e., true sign bit and inverted magnitude bits. ...
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V Ref An external voltage must be supplied to the V which provides the reference voltage for the digital encoding and decoding of the analog signal. For V = 2.5V, the digital encode decision value for Ref overload (maximum analog ...
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MT8960/61/62/63/64/65/66/67 Internally the codec will then perform a decode cycle on the newly input PCM word. The sampled and held analog signal thus decoded will be updated 25 µs from the start of the cycle. After this the analog input ...
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Note: For Modes 1 and 2, F1i must be at logic low for one period of 3.9 µs, in each 125 µs cycle, when PCM data is being input and output, and the control word at CSTi enters Register A. ...
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... Protection Battery Feed Ringing Figure 6 - Typical Line Termination LOGIC CONTROL OUTPUTS LOGIC CONTROL OUTPUT SD LOGIC CONTROL OUTPUTS SD CHIP TESTING CONTROLS input X R input Table 3. Control States - Register B Telephone Set PCM Highway MT8960/61 MT8962/63 2W/4W MT8964/65 Converter MT8966/67 - ...
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Powerdown Powerdown of the chip is achieved in several ways: Internal Control: 1) Initial Power-up. Initial application causes powerdown for a period of 25 clock EE cycles and during this period the chip will accept input only ...
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MT8960/61/62/63/64/65/66/67 Speech Switch - 8980 Controlling Micro- Processor Control & Signalling - 8980 Figure 8 - Example Architecture of a Simple Digital Switching System Using the MT8960-67 6-28 2 ISO -CMOS DSTi V X DSTo V R CDTi SD0 . ...
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Absolute Maximum Ratings* Parameter 1 DC Supply Voltages 2 Reference Voltage 3 Analog Input 4 Digital Inputs 5 Output Voltage 6 Current On Any Pin 7 Storage Temperature 8 Power Dissipation at 25°C (Derate 16 mW/ * Exceeding these values ...
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MT8960/61/62/63/64/65/66/67 DC Electrical Characteristics (cont’d) Characteristics 6 Output Low DSTo D Voltage Output High DSTo I Voltage Output Resistance Output Capacitance DSTo 10 Input Current Input ...
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AC Electrical Characteristics (cont’d) Characteristics 17 Propagation Delay D Clock to SD Output Output Fall Time Output Rise Time Digital Loopback L Time DSTi to DSTo (See Figures 9a, 9b, ...
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MT8960/61/62/63/64/65/66/67 Transmit (A/D) Path (cont’d) Characteristics Quantization CCITT G712 Distortion (Method 2) (cont’d) AT&T (See Figure 13) 7 Idle Channel C-message Noise Psophometric 8 Single Frequency Noise 9 Harmonic Distortion (2nd or 3rd Harmonic) 10 Envelope Delay 11 Envelope Delay ...
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AC Electrical Characteristics - Receive (D/A) Path ° ± ± =5V 5%, V =-5V 5 Filter Gain Setting = 0dB. Outputs unloaded unless otherwise specified. Characteristics 1 Analog output at ...
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MT8960/61/62/63/64/65/66/67 Receive (D/A) Path (cont’d) Characteristics 11 Envelope Delay 12 Envelope Delay 1000-2600 Hz Variation with 600-3000 Hz Frequency 400-3200 Hz <200 Hz 13 Gain Relative to Gain @ 1004 Hz 200 Hz A (See Figure 11) 300-3000 Hz N ...
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C2i 50% Input 10 90% F1i Input 10 DSTo high Output impedance t PZL t PZH Figure 9b - Timing Diagram - Output Enable Note: In typical applications, F1i will remain ...
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MT8960/61/62/63/64/65/66/67 SCALE B SCALE A PASSBAND ATTENUATION 0 -0.125 0. Attenuation Relative To Attenuation At 1 kHz (dB 5060 100 200 Figure 10 - Attenuation vs Frequency for Transmit (A/D) ...
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ISO 5a. CCITT Method 1 CCITT End-To-End Spec +1.0 +0.5 +0.25 0 -60 -55 -50 -40 -0.25 -0.5 -1.0 Bandlimited White Noise Test Signal 5b. CCITT Method 2 +1.5 +1.0 +0.5 +0.25 0 -60 -50 -0.25 -0.5 -1.0 -1.5 Sinusoidal ...
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MT8960/61/62/63/64/65/66/67 6a. CCITT Method 29.3 20 14.3 12 -60 -55 -50 6b. CCITT Method 25.4 24 -60 -50 Figure 13 - Signal to Total Distortion Ratio vs Input Level ...
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ISO 1000 750 500 370 (600Hz) 250 125 0 500 Figure 14 - Envelope Delay Variation Frequency 5 4 *Relative to Fundamental Output power level with +3dBm0 input signal level at a frequency of 1.02kHz. Figure ...
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MT8960/61/62/63/64/65/66/67 Notes: 6-40 2 ISO -CMOS ...
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Package Outlines Notes Not to scale 2) Dimensions in inches 3) (Dimensions in millimeters) Plastic Dual-In-Line Packages (PDIP Suffix 8-Pin DIM Plastic Min Max A 0.210 (5.33) A 0.115 (2.92) ...
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Notes Not to scale 2) Dimensions in inches 3) (Dimensions in millimeters) Plastic Dual-In-Line Packages (PDIP Suffix 22-Pin DIM Plastic Min Max A 0.210 (5.33) A 0.125 (3.18) 0.195 ...
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North America - West Coast Tel: (858) 675-3400 Fax: (858) 675-3450 Tel: +65 333 6193 Fax: +65 333 6192 Information relating to products and services furnished herein by Zarlink Semiconductor Inc. trading as Zarlink Semiconductor or its subsidiaries (collectively “Zarlink”) ...