Speech CODEC for VoIP
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Description
OKI
Semiconductor's ML7074-003GA is a speech CODEC designed for VoIP applications.
The device supports G.729.A, G.726, and G.711 voice compression standards,
conversion between G.729.A and G.726 standards, and pin-selectable µ-law and
A-law ITU companding. Optimized for VOIP applications such as terminal adapters,
routers, and IP phones, the device features echo cancellation (32 msec max),
DTMF detection, multiple tone detection and generation functions, and input and
output amplifiers.
The ML7074-003GA replaces and is fully compatible with
OKI's ML7074-001GA speech CODEC. The new features supported by the ML7074-003GA
are: a DTMF detector mute function and a tone generator wave- shaping function.
The ML7074-003GA CODEC uses a single 3.3-V power supply and is packaged in a
64-pin QFP.
Features
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Single 3.3 V power supply operation (DVDD0, 1, 2, AVDD: 3.0 to
3.6 V) |
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Speech CODEC:
G.729.A (8 kbps)
G726 (32 kbps)
G.711
(64 kbps)
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Mutual voice compression: G.729.A .G.726
G.711 (A-law and
µ-law companding)
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Terminal-side voice interfaces:
Analog, 16-bit linear PCM
(2's complement), or G711 |
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Echo canceller (32 ms max) |
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DTMF detector and generator with mute function |
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Tone detector, dual tone (1650 Hz / 2100 selectable)
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Tone generator with wave-shaping function |
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FSK generator |
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Dial pulse detector |
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Dial pulse transmit function |
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Internal 1-channel 16-bit timer |
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Built-in FIFO buffers (640 bytes) for transferring transmitted
and received data
Selectable Frame/DMA (slave) interface |
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Master clock frequency: 4.096 MHz (crystal oscillation or
external input) |
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Hardware and software power down options |
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Analog input/output type:
Two built-in input amplifiers, 10
M driving
Two built-in output amplifiers, 10 k driving
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Operating temperature: -20 to +60 °C |
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Package:
64-pin plastic QFP (QFP64-P-1414-0.80-BK)
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