Preliminary
S3C2451X RISC MICROPROCESSOR
HSMMC CONTROLLER
21-39
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
WAKEUP CONTROL REGISTER
This register is mandatory for the Host Controller, but wakeup functionality depends on the Host Controller system
hardware and software. The Host Driver shall maintain voltage on the SD Bus, by setting
SD Bus Power
to 1 in
the
Power Control
register, when wakeup event via Card Interrupt is desired.
Register Address
R/W
Description
Reset
Value
WAKCON0 0X4AC0002B R/W
Wakeup
Control Register (Channel 0)
0x0
WAKCON1 0X4A80002B R/W
Wakeup
Control Register (Channel 1)
0x0
Name Bit
Description
Initial
Value
[7:3]
Reserved
0
ENWK
UPRE
M
[2]
Wakeup Event Enable On SD Card Removal
This bit enables wakeup event via
Card Removal
assertion in the
Normal
Interrupt Status
register.
FN_WUS
(Wake Up Support) in CIS does not affect
this bit. (RW)
‘1’ = Enable
‘0’ = Disable
0
ENWK
UPINS
[1]
Wakeup Event Enable On SD Card Insertion
This bit enables wakeup event via
Card Insertion
assertion in the
Normal
Interrupt Status
register.
FN_WUS
(Wake Up Support) in CIS does not affect
this bit. (RW)
‘1’ = Enable
‘0’ = Disable
0
ENWK
UPINT
[0]
Wakeup Event Enable On Card Interrupt
This bit enables wakeup event via
Card Interrupt
assertion in the
Normal
Interrupt Status
register. This bit can be set to 1 if
FN_WUS
(Wake Up Support)
in CIS is set to 1. (RW)
‘1’ = Enable
‘0’ = Disable
0