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PRELIMINARY
S3C6400 RISC MICROPROCESSOR
GPIO
10-
43
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.
SPECIAL PORT CONTROL REGISTER
Register
Address
R/W
Description
Reset Value
SPCON 0x7F0081A0
R/W
Special
Port Control Register
0x00011500
SPCON
Bit
Description
Initial State
Reserved [31:21] Reserved
0x000
nRSTOUT_OEN
[20]
Reset Out pin(XnRSTOUT) output enable
0 = enable 1 = disable (hi-Z)
0
Reserved [19:18]
Reserved
00
MEM1_DQS_PUD
[17:16]
Memory Port 1 DQS pin pull-up/down control
00 = disabled
01 = pull-down
10 = pull-up
11 = Do not use.
01
MEM1_D_PUD1
[15:14]
Memory Port 1 Data pin [31:16] pull-up/down control
00 = disabled
01 = pull-down
10 = pull-up
11 = Do not use.
00
MEM1_D_PUD0
[13:12]
Memory Port 1 Data pin [15:0] pull-up/down control
00 = disabled
01 = pull-down
10 = pull-up
11 = Do not use.
01
MEM0_DQS_PUD
[11:10]
Memory Port 0 DQS pin pull-up/down control
00 = disabled
01 = pull-down
10 = pull-up
11 = Do not use.
01
MEM0_D_PUD
[9:8]
Memory Port 0(ROM bank) Data pin pull-up/down control
00 = disabled
01 = pull-down
10 = pull-up
11 = Do not use.
01
USB_DMPD
[7]
USB DM Pull-down
3)
control
0 = disable
1 = enable
0
USB_DPPD
[6]
USB DP Pull-down
3)
control
0 = disable
1 = enable
0
USB_PUSW2 [5]
USB
Pull-up
2)
switch2 is controlable when USB_PUSW1 is on.
0 = off
1 = on
0
USB_PUSW1 [4]
USB
Pull-up
1)
switch1 control
0 = off
1 = on
0
USB_SUSPND
[3]
Make USB Tranceiver PAD to enter suspend mode.
0 = Normal mode
1 = Suspend mode
0
Reserved [2]
Reserved
0
LCD_SEL
[1:0]
Select LCD I/F pin configure
00 = Host I/F style
01 = RGB I/F style
10 = reserved.
11 = reserved.
00
Note:
1. Pull-up resistance is 1.2kohm. Refer to figure 10-2.
2. Pull-up resistance is 0.5kohm. Refer to figure 10-2.
3. Pull-down resistance is 20kohm. Refer to figure 10-2.