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PRELIMINARY
S3C6400 RISC MICROPROCESSOR
GPIO
10-
75
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.
EXTERN PIN CONFIGURATION REGISTER IN SLEEP MODE
These registers keep their values during sleep mode.
Register
Address
R/W
Description
Reset Value
SPCONSLP 0x7F008880
R/W
Special
Port
Sleep mode configure Register
0x0000010
SLPEN
0x7F008930
R/W
Sleep mode Pad Configuer Register.
0x00
SPCONSLP
Bit
Description
Initial State
Reserved [15]
Reserved
0
TDOPULLDOWN
[14]
XjTDO Pad Pull-Down Control at STOP mode
0 = Disable
1 = Pull-Down Enable
0
RSTOUT
[13:12]
Reset Out pin(XnRSTOUT) Configure
00 = output 0
01 = output 1
1x = output disable ( hi-Z )
00
Reserved [11:5]
Reserved
00
CKE0_INIT
[4]
Initial value for Memory port 0 CK
This value is valid only when system is in reset state of power-
on or sleep-wakeup..
1
Reserved [3:2]
Reserved
00
KP_COL
[1:0]
Key Pad Column bit Configure
00 = output 0
01 = output 1
1x = input
00
SLPEN
Bit
Description
Initial State
Reserved [7:2]
reserved
0
SLPEN_CFG
[1]
0 : Automatically by Sleep mode 1: by SLPEN bit.
0
SLPEN
[0]
Sleep mode Pad state enable Register
When this bit is set to ‘1’, external pins are controlled by sleep
mode control register such as ACONSLP, MEM0CONSLP, etc.
This bit is set to ‘1’ automatically when system enters into
sleep mode and can be cleared by writing ‘0’ to this bit or cold
reset (by XnRESET pin). After waken up from sleep mode, this
bit maintains the value ‘1’.
00