Specifications

57
AT83SND2CMP3
7524D–MP3–07/07
Figure 46. 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 47 shows the MMC controller configura-
tion flow.
As exposed in Section “Clock Control”, page 55, MMCD7:0 bits can be used to dynami-
cally increase or reduce the MMC clock.
Figure 47. Configuration Flow
MMCD7:0
MMCLK
MMC Clock
MMCclk
OSCclk
MMCD 1+
-----------------------------=
OSC
CLOCK
MMCEN
MMCON2.7
Controller Clock
MMC
CLOCK
MMC Clock Symbol
MMC Controller
Configuration
Configure MMC Clock
MMCLK = XXh
MMCEN = 1
FLOWC = 0