S3C2416X RISC MICROPROCESSOR
HSMMC CONTROLLER
20-47
Name
Bit
Description
Initial Value
detect the
Card Interrupt
without SD Clock to support wakeup. In
4-bit mode, the card interrupt signal is sampled during the interrupt
cycle, so there are some sample delays between the interrupt
signal from the SD card and the interrupt to the Host System. It is
necessary to define how to handle this delay.
When this status has been set and the Host Driver needs to start
this interrupt service,
Card Interrupt Status Enable
in the
Normal
Interrupt Status Enable
register shall be set to 0 in order to clear
the card interrupt statuses latched in the Host Controller and to
stop driving the interrupt signal to the Host System. After
completion of the card interrupt service (It should reset interrupt
factors in the SD card and the interrupt signal may not be
asserted), set
Card Interrupt Status Enable
to 1 and start
sampling the interrupt signal again. (ROC, RW1C)
1 = Generate Card Interrupt
0 = No Card Interrupt
STACARDREM [7]
Card Removal
This status is set if the
Card Inserted
in the
Present State
register
changes from 1 to 0. When the Host Driver writes this bit to 1 to
clear this status, the status of the Card Inserted in the Present
State register should be confirmed. Because the card detect state
may possibly be changed when the Host Driver clear this bit and
interrupt event may not be generated. (RW1C)
1 = Card removed
0 = Card state stable or Debouncing
0
STACARDINS [6]
Card Insertion
This status is set if the
Card Inserted
in the
Present State
register
changes from 0 to 1. When the Host Driver writes this bit to 1 to
clear this status, the status of the Card Inserted in the Present
State register should be confirmed. Because the card detect state
may possibly be changed when the Host Driver clear this bit and
interrupt event may not be generated. (RW1C)
1 = Card inserted
0 = Card state stable or Debouncing
0
STABUFRDRDY [5]
Buffer Read Ready
This status is set if the
Buffer Read Enable
changes from 0 to 1.
Refer to the
Buffer Read Enable
in the
Present State
register.
(RW1C)
1 = Ready to read buffer
0 = Not ready to read buffer
0
STABUFWTRDY [4]
Buffer Write Ready
This status is set if the
Buffer Write Enable
changes from 0 to 1.
Refer to the
Buffer Write Enable
in the
Present State
register.
(RW1C)
1 = Ready to write buffer
0 = Not ready to write buffer
0
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 ...