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WMA Decoder
LC78685V | Conditional | ❋ : Use of conditional products requires |
productproduct | ||
| Product | consultation with a SANYO representative |
7.5 Mbps Automotivetomotive LANLAN TransceiverTransceiver
LA2351M1M
Newew
Overview
prior to the use of the device.
Overview
The LC78685V is a WMA❋ decoder IC. This IC is implemented using a dedicated hard wired circuit structure
to achieve low power consumption. Various format
The LC78685V makes it easy to implement CD players that provide multiformat decoding functions.
Features
■WMA (Windows Media Audio) decoding functions ◆Supports version 8
◆Bit rates: 32 to 192 kbps
◆Sampling frequencies: 22.05 kHz to 48 kHz ◆Header information readout function ◆Automatic framing error recovery function
■Audio data functions ◆WMA playback mode
:Serial audio signal output using the LRCK, BCK, and DATA signals
(Output supports the I2S format, 16- or
:Attenuator and muting
:Base clock (384 Fs) output for external digital filters and D/A converter
■Audio data other than WMA
◆The system clock and audio data input to the CKIN, LRCKIN, BCKIN, and DATAIN pins is output directly without
change from the CKOUT, LRCKO, BCKO, and DATA pins. That is,
■Supply voltages ◆Internal: 1.8 V ◆I/O: 3.3 V
■Package: SSOP24 (275 mil)
❋ : WMA: Windows Media Audio
Windows Media is a registered trademark of Microsoft Corporation in the US and other countries.
Block Diagram
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| STRDY | CE CL CMIDIN | CMIDOUT |
CKIN | Clock |
| MICOM I/F | |
CKOUT | Generator |
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DEMAND |
| WMA |
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ZCSWMA | Input | Decoder |
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STCKIN | Buffer |
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STDATIN |
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| Main |
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| Memory |
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LRIN |
| Audio |
| LRCKO |
BCKIN |
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| Output |
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DATAIN |
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| DATAO | |
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RESB |
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TEST |
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The LA2351M is a
Functions
■Transmitter block
◆A/D converter (3 bits)
■Receiver block
◆Reception amplifier
◆Noise rejection
Features
■Accepts either
If a
■A 5 Mbps or 7.5 Mbps automotive LAN can be implemented by combining the LA2351M with an automotive LAN protocol IC (ARCNET controller TMC20040C series device).
■The
■Supports
■Package: MFP30SD (375 mil)
Block Diagram
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| 0.1∝F |
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| VCC |
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| 0.1 | ∝ |
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| F |
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External DAC |
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| 0.1 | ∝ |
| 3.3∝F |
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| 0.1 | ∝ |
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| F |
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| 0.1∝F |
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TXI0 | TXI1 | TXI2 | RADO | CC |
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| TXEN |
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| V |
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30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
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| DAC |
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| LPF |
| Driver |
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| Amp |
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| Receiver Amp |
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| Noise |
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| Filter |
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| Comparater |
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| VCC |
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1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
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| 0.1∝F |
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| 3.3∝F |
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| 2.2kΩ | 0.1∝F | |
VCC |
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| 33kΩ |
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| 0.1∝F |
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0.1∝F |
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| 330kΩ |
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| 0.1 F |
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OUT PUT | 3.3V | COMP |
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| GND | COMP |
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| 330kΩ |
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GND |
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| CONTROL BIAS |
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VCC |
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| 2.2kΩ | |
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DATA OUT |
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| 19 Car Audio | 20 Car Audio |
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