OKI Semiconductor
ML7074-004GA
VoIP CODEC
FEDL7074-004DIGEST-01
Issue Date: Nov. 12, 2003
This document contains minimum specifications. For full specifications, please contact your nearest Oki office or
representative.
GENERAL DESCRIPTION
The ML7074-004GA is a speech CODEC for VoIP. This LSI allows selection of G.729.A, 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 ms 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), G.711 (64 kbps)
µ-law,
and A-law
Supports PLC (Packet Loss Concealment) function conforming to ITU-T G.711 Appendix I
•
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: 2 systems
•
FSK generation 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
Two built-in output amplifiers, 10 kΩ driving
•
Package:
64-pin plastic QFP (QFP64-P-1414-0.80-BK)
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