S5L9276 View Datasheet(PDF) - Samsung

Part Name

Description

Manufacturer

S5L9276

OPTICAL CD MP3 SYSTEM

Samsung 

S5L9276 (PRELIMINARY SPEC)

OPTICAL CD MP3 SYSTEM

POWER MANAGEMENT

Power Save Modes

Down : Master Clock Disabled. Whole chip is in reset state and clocking is disabled.

Sleep Mode : All units suspended except hitUnit and DRAM Controller Block to refresh DRAM.

Running

Stop

Play

MP3

Power Down

Sleep

System Power ON

Power down mode

Power down mode is implemented using MLAT, MCK, and MDAT. When the MLAT is low the MDAT is goes to low,

the CD-MP3 goes to "power down reset" mode. It means power ON state. When the MLAT is low and the MCK goes

to LOW, the CD-MP3 toggles the "power down mode". The default value of MLAT, MCK, and MDAT is HIGH. When

the system power becomes ON and the master reset comes, Micom should set the value of MLAT, MCK, and MDAT

to HIGH. And should reset the power down mode of CD-MP3 using MLAT and MDAT LOW. Finally should send the

S/W reset to CD-MP3 H_SOFT_RST (8'hE0) register.

Sleep mode

In sleep mode, the minimal power is supplied which is needed just for DRAM refresh, receiving host command, and

etc. There is a register H_SLEEP_CR to control Sleep mode. To enter sleep mode write "1xxxxxxx" into the

H_SLEEP_CR. To wake up from sleep mode write "0xxxxxxx" into the H_SLEEP_CR.

H_SLEEP_CR

8'hdf

Power Save mode

In power save mode, hardware units in the S5L9276X can be dynamically enabled or disabled during it's operation to

reduce the power consumption. This feature is enabled by writing xxxxxxx1 to H_PSV_ENABLE and disabled by

writing xxxxxx0 to H_PSV_ENABLE.

Make sure that Power Save mode should be disabled for

Micom to access all other S5L9276

registers.

H_PSV_ENABLE

8'hde

18

Share Link: