OKI Semiconductor
ML7074-001 GA
VoIP CODEC
FEDL7074-001DIGEST-01
Issue Date: Oct. 15, 2002
GENERAL DESCRIPTION
The ML7074-001GA 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 LSI 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.
FEATURES
•
Single 3.3 V power supply operation (DV
DD
0, 1, 2, AV
DD
: 3.0 to 3.6 V)
•
Speech CODEC:
Selectable among G.729.A (8 kbps), G726 (32 kbps), G.711 (64 kbps)
µ-law,
and A-law
Mutual conversion function between G.729.A (8 kbps) and G.726 (32 kbps).
•
Echo canceller for 32 ms delay
•
DTMF detect function
•
Tone detect function: 2 systems (1650 Hz, 2100 Hz: Detect frequency can be changed.)
•
Tone generate function
•
FSK generate function
•
Dial pulse detect function
•
Dial pulse transmit function
•
Internal 1-channel 16-bit timer
•
Built-in FIFO buffers (640 bytes) for transferring transmit and receive data
Frame/DMA (slave) interface selectable.
•
Master clock frequency: 4.096 MHz (crystal oscillation or external input)
•
Hardware or software power down operation possible.
•
Analog input/output type:
Two built-in input amplifiers, 10 kΩ driving
Two built-in output amplifiers, 10 kΩ driving
•
Package:
64-pin plastic QFP (QFP64-P-1414-0.80-BK)
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