Samsung S3C2451X User Manual page 308

I/O PORTS
GPIO Alive & Sleep Part
Alive
PAD GPF[7:0], GPG[7:0]
GPACON[27;0],
SFR
GPFCON[15;0],
GPGCONL[15:0], GPGDATL[7:0], GPGUDPL[15:0]
GPKCON[31:0],
EXTINT0[31:0],
PDDMCON,
11-52
GPADAT[27:0]
GPFDAT[7:0], GPFUDP[15:0]
GPKDAT[15:0], GPKUDP[31:0]
EXINT1[31:0]
PDSMCON
S3C2451X RISC MICROPROCESSOR
Sleep
GPA, GPB, GPC, GPD, GPE, GPG[15:8],
GPH, GPJ, GPK, GPL ,GPM
All registers except alive SFR
GP*CON, GP*DAT, GP*UDP