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HSMMC CONTROLLER
S3C2416X RISC MICROPROCESSOR
20-42
Name
Bit
Description
Initial Value
STBLEXTCLK [3]
External Clock Stable
This bit is set to 1 when SD Clock output is stable after writing to
SD
Clock Enable
in this register to 1. The SD Host Driver shall wait to
issue command to start until this bit is set to 1.
(ROC)
1 = Ready
0 = Not Ready
0
ENSDCLK [2]
SD Clock Enable
The Host Controller shall stop
SDCLK
when writing this bit to 0.
SDCLK Frequency Select
can be changed when this bit is 0. Then,
the Host Controller shall maintain the same clock frequency until
SDCLK
is stopped (Stop at
SDCLK
=0). If the
Card Inserted
in the
Present State register
is cleared, this bit shall be cleared.
(RW)
1 = Enable
0 = Disable
0
STBLINTCLK [1]
Internal Clock Stable
This bit is set to 1 when SD Clock is stable after writing to
Internal
Clock Enable
in this register to 1. The SD Host Driver shall wait to
set
SD Clock Enable
until this bit is set to 1.
Note: This is useful when using PLL for a clock oscillator that requires
setup time.
(ROC)
1 = Ready
0 = Not Ready
0
ENINTCLK [0]
Internal Clock Enable
This bit is set to 0 when the Host Driver is not using the Host
Controller or the Host Controller awaits a wakeup interrupt. The Host
Controller should stop its internal clock to go very low power state.
Still, registers shall be able to be read and written. Clock starts to
oscillate when this bit is set to 1. When clock oscillation is stable, the
Host Controller shall set
Internal Clock Stable
in this register to 1.
This bit shall not affect card detection.
(RW)
1 = Oscillate
0 = Stop
Summary of Contents for S3C2416
Page 122: ...BUS MATRIX EBI S3C2416X RISC MICROPROCESSOR 3 4 NOTES ...
Page 204: ...DMA CONTROLLER S3C2416X RISC MICROPROCESSOR 8 18 NOTES ...
Page 284: ...WATCHDOG TIMER S3C2416X RISC MICROPROCESSOR 11 6 NOTES ...
Page 320: ...REAL TIME CLOCK S3C2416X RISC MICROPROCESSOR 13 16 NOTES ...
Page 344: ...UART S3C2416X RISC MICROPROCESSOR 14 24 NOTES ...
Page 380: ...USB2 0 DEVICE S3C2416X RISC MICROPROCESSOR 16 34 NOTES ...
Page 432: ...2D S3C2416X RISC MICROPROCESSOR 18 38 NOTES ...
Page 446: ...HS_SPI CONTROLLER S3C2416X RISC MICROPROCESSOR 19 14 NOTES ...
Page 604: ...S3C2416X RISC MICROPROCESSOR S3C2416X RISC MICROPROCESSOR 23 22 NOTES ...
Page 638: ...PCM AUDIO INTERFACE S3C2416X RISC MICROPROCESSOR 25 18 NOTES ...
Page 670: ...ELECTRICAL DATA S3C2416X RISC MICROPROCESSOR 26 32 NOTES ...