MT8924AS Zarlink Semiconductor, MT8924AS Datasheet
MT8924AS
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MT8924AS Summary of contents
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... PCM Mode Control RESET Cki A/ PCM Conference Circuit (PCC) MT8924AE MT8924AS Description The MT8924 is designed to provide conference call capability in digital switching systems. It allows independent conferences to be set for PCM voice channels. A/ -Law companded data from the PCM input port is ...
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MT8924 Pin Description Pin # Name 1 TD Tone Duration (Input). When TD is High, a PCM-coded tone is sent out to all channels of the enabled conferences instead of PCM data latched by frame pulse F0i so ...
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Preliminary Information Pin Description (continued) Pin # Name 19 F0i Frame Pulse (Input). This kHz active low input used for frame synchronization of the PCM bit stream. The first falling edge of Cki following the falling edge ...
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MT8924 A-Law -Law Table 1 - PCM Noise Suppression Threshold Levels Overflow Detection / Input Channel Attenuation If the sum of the channels involved in one conference exceeds the full scale value of the accumulator, an overflow condition is generated ...
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Preliminary Information Noise Suppression When noise suppression is enabled for a specific input channel then the PCM bytes for this channel, when below the selected threshold level, are converted to PCM bytes corresponding to the minimum PCM code level before ...
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MT8924 control byte. The data byte contains the number of the channel to be disconnected. The second byte contains the opcode (D0-D3). One frame pulse must pass between disconnection reconnection of the same channel. Instruction 4 : Overflow Status Monitoring ...
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Preliminary Information Instruction 1 : Channel Connection in Conference Mode Control Signals Conference Start Bit P3-P0: Conference Number (1-10) ...
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MT8924 Instruction 5 : PCM Operating Mode Selection Control Signals Extra bit insertion (active when E= F0: PCM byte format selection (see Table ...
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Preliminary Information Absolute Maximum Ratings* Parameter 1 Supply Voltage 2 Voltage on any I/O pin 3 Current on any I/O pin 4 Storage Temperature 5 Power Dissipation (plastic package) * Exceeding these figures may cause permanent damage. Functional operation under ...
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MT8924 AC Electrical Characteristics - Clocked Timing* Characteristics 1 Clock period 2 Clock low level width 3 Clock high level width 4 Clock rise time 5 Clock fall time 6 Sync. low setup time 7 Sync. low level hold time ...
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Preliminary Information AC Electrical Characteristics - PCM Timing* Characteristics 1 Input PCM setup time 2 Input PCM hold time 3 Output PCM propagation delay *All AC characteristics are valid 250 s after V resistor. **With Extra Bit Insert operating mode ...
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MT8924 AC Electrical Characteristics - Write Timing Characteristics 1 Write Pulse low width 2 Write Pulse high width 3 Repetition Interval between active Write Pulses 4 Read high setup time to active Write Pulse 5 Read high hold time from ...
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Preliminary Information AC Electrical Characteristics - Read Timing Characteristics 1 Read Pulse low width 2 Read Pulse high width 3 Repetition Interval between active Read Pulses 4 Write high setup time to active Read Pulse 5 Write high hold time ...
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MT8924 Extra Bit Cki t PDEC Cko F0i Figure 10 - CKo Timing with Extra Bit Insertion Mode Channel N-1 Cki OS Figure Timing with Output PCM Channel belonging to a Conference in Overflow 8-16 Preliminary Information ...
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... For more information about all Zarlink products Information relating to products and services furnished herein by Zarlink Semiconductor Inc. trading as Zarlink Semiconductor or its subsidiaries (collectively “Zarlink”) is believed to be reliable. However, Zarlink assumes no liability for errors that may appear in this publication, or for liability otherwise arising from the application or use of any such information, product or service or for any infringement of patents or other intellectual property rights owned by third parties which may result from such application or use ...