AT80SND1C-ROTIL datasheet(115/210 Pages) ATMEL

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AT80SND1C-ROTIL Datasheet(PDF) 115 Page - ATMEL Corporation

Part #	AT80SND1C-ROTIL

Description	Single-Chip Flash Microcontroller with MP3 Decoder and Human Interface

PDF	210 Pages

Scroll/Zoom	100%

Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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115 / 210 page

115

AT8xC51SND1C

4109E–8051–06/03

Figure 79. MMC Clock Generator and Symbol

As soon as MMCEN bit in MMCON2 is set, the MMC controller receives its system

clock. The MMC command and data clock is generated on MCLK output and sent to the

command line and data line controllers. Figure 80 shows the MMC controller configura-

tion flow.

As exposed in Section “Clock Control”, page 113, MMCD7:0 bits can be used to dynam-

ically increase or reduce the MMC clock.

Figure 80. Configuration Flow

MMCD7:0

MMCLK

MMC Clock

MMCclk

OSCclk

MMCD

-----------------------------

OSC

CLOCK

MMCEN

MMCON2.7

Controller Clock

MMC

CLOCK

MMC Clock Symbol

MMC Controller

Configuration

Configure MMC Clock

MMCLK = XXh

MMCEN = 1

FLOWC = 0

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