AT89C51SND1C-ROTIL datasheet(16/42 Pages) ATMEL

16 / 42 page

AT8xC51SND1C

4109JS–8051–10/06

Additional features are supported by the AT8xC51SND1C MP3 decoder such as vol-

ume, bass, medium, and treble controls, bass boost effect and ancillary data extraction.

1.6 Audio Output Interface

The AT8xC51SND1C implements an audio output interface allowing the decoded audio

bitstream to be output in various formats. It is compatible with right and left justification

PCM and I

2S formats and thanks to the on-chip PLL (see Section 1.1) allows connection

of almost all of the commercial audio DAC families available on the market.

1.7 Universal Serial Bus Interface

The AT8xC51SND1C implements a full speed Universal Serial Bus Interface. It can be

used for the following purposes:

•

Download of MP3 encoded audio files by supporting the USB mass storage class.

•

In System Programming by supporting the USB firmware upgrade class.

1.8 MultiMediaCard Interface

The AT8xC51SND1C implements a MultiMediaCard (MMC) interface compliant to the

V2.2 specification in MultiMediaCard Mode. The MMC allows storage of MP3 encoded

audio files in removable flash memory cards that can be easily plugged or removed from

the application. It can also be used for In System Programming.

1.9 IDE/ATAPI interface

The AT8xC51SND1C provides an IDE/ATAPI interface allowing connexion of devices

such as CD-ROM reader, CompactFlash cards, Hard Disk Drive… It consists in a 16-bit

bidirectional bus part of the low-level ANSI ATA/ATAPI specification. It is provided for

mass storage interface but could be used for In System Programming using CD-ROM.

1.10 Serial I/O Interface

The AT8xC51SND1C implements a serial port with its own baud rate generator provid-

ing one single synchronous communication mode and three full-duplex Universal

Asynchronous Receiver Transmitter (UART) communication modes. It is provided for

the following purposes:

•

In System Programming.

•

Remote control of the AT8xC51SND1C by a host.

1.11 Serial Peripheral Interface

The AT8xC51SND1C implements a Serial Peripheral Interface (SPI) supporting master

and slave modes. It is provided for the following purposes:

•

Interfacing DataFlash memory for MP3 encoded audio files storage.

•

Remote control of the AT8xC51SND1C by a host.

•

In System Programming.

AT89C51SND1C-ROTIL Datasheet(PDF) 16 Page - ATMEL Corporation

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