Product Summary
The ML7074-003 is a speech CODEC for VoIP. This LSI allows selection of G.729.A, G.726, or G.711 standard as a speech CODEC. The ML7074-003 is optimum for adding VoIP functions to TAs, routers, etc., since it has the functions of an echo canceller for 32 msec delay, DTMF detection, tone detection, tone generation, etc.
Parametrics
ML7074-003 absolute maximum ratings: (1)Analog power supply voltage VDA: -0.3 to 5.0 V; (2)Digital power supply voltage VDD: -0.3 to 5.0 V; (3)Analog input voltage VAIN Analog pins: -0.3 to VDD + 0.3 V; (4)Digital input voltage VDIN1 Normal digital pins: -0.3 to VDD + 0.3 V VDIN2 5 V tolerant pins: -0.3 to 6.0 V; (5)Storage temperature range Tstg: -55 to +150 °C; (6)Digital output load capacitance CDL Digital pins: 50 pF.
Features
ML7074-003 features: (1)Echo canceller for 32 ms delay; (2)DTMF detect function; (3)Tone detect function: 2 systems (1650 Hz, 2100 Hz: Detect frequency can be changed.); (4)Tone generate function; (5)FSK generate function; (6)Dial pulse detect function; (7)Dial pulse transmit function; (8)Internal 1-channel 16-bit timer; (9)Built-in FIFO buffers (640 bytes)for transferring transmit and receive data; (10)Frame/DMA (slave)interface selectable; (11)Master clock frequency: 4.096 MHz (crystal oscillation or external input); (12)Hardware or software power down operation possible.
Diagrams
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