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ML7204-003 Datasheet, PDF (1/214 Pages) LAPIS Semiconductor Co., Ltd. – VoIP CODEC | |||
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ML7204-003
VoIP CODEC
FEDL7204-003-02
Issue Date: Oct 14, 2011
GENERAL DESCRIPTION
The ML7204-003 is a speech CODEC for VoIP. As a speech CODEC, this LSI allows selection of
G.729.A/G711 and supports the PLC (Packet Loss Concealment) function.
With an echo canceler that handles 32 ms-delay and FSK detection/generation, DTMF detection/generation, and
tone detection/generation functions, the ML7204-003 is the most suitable LSI for adding the VoIP function to
TAs and routers.
FEATURES
ï· Power supply voltage
Digital power supply voltage (DVDD0, 1, 2): 3.0 to 3.6 V
Analog power supply voltage (AVDD):
3.0 to 3.6 V
ï· Speech CODEC:
G.729.A (8 kbps)/G.711 (64 kbps) ï-law and A-law (supports individual setting for transmission and
reception)
Supports ITU-T G.711 Appendix 1 compliant PLC (Packet Loss Concealment) function
Supports the 2-channel processing function (for 3-way communication)
ï· Built-in FIFO buffer (640 bytes) for transmission/reception data transfer
Allows selection of Frame/DMA (slave) interface
ï· Provided with echo canceler for handling 32 ms delay and Range Controllers
ï· DTMF detection
ï· DTMF generation (the tone generation function enables generation of DTMF signals)
ï· Tone detection:
2 types (1650 Hz and 2100 Hz: Detection frequency can be changed)
ï· Tone generation:
2 types
ï· FSK detection
ï· FSK generation
ï· Built-in 16-bit timer:
1 channel
ï· Dial pulse detection function (secondary function of general-purpose I/O ports)
ï· Dial pulse transmission function (secondary function of general-purpose I/O ports)
ï· General-purpose I/O ports : Equipped with 7 ports (with some of them having secondary function allocation)
ï· Two types of built-in linear PCM CODEC (CODEC_A and CODEC_B)
ï· Analog interface
CODEC_A side: Incorporates one type each of input amplifier and output amplifier (10 kï driving)
CODEC_B side: Incorporates one type each of input amplifier and output amplifier (10 kï driving)
ï· PCM interface coding format:
Allows selection of 16-bit linear/G.711 (64 kbps) ï-law or A-law
ï· PCM serial transmission rate: 64 kHz to 2.048 MHz (fixed to 2.048 MHz for output)
ï· PCM time slot assignment function (allows up to 2 slots for input and 1 slot for output individually)
When set to ï-law/A-law: Supports up to 32 slots (BCLK: 2.048 MHz)
When set to 16-bit linear: Supports up to 16 slots (BCLK: 2.048 MHz)
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