Laptop User Manual
S3C2440A RISC MICROPROCESSOR     PRODUCT OVERVIEW 
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Table 1-4. S3C2440A Special Registers (Sheet 11 of 14) 
Register 
Name 
Address 
(B. Endian) 
Address 
(L. 
Endian) 
Acc. 
Unit 
Read/
Write
Function 
I/O port 
GPACON 0x56000000 
← 
W  R/W  Port A Control 
GPADAT 0x56000004 
    Port A Data 
GPBCON 0x56000010 
    Port B Control 
GPBDAT 0x56000014 
    Port B Data 
GPBUP 0x56000018 
    Pull-up Control B 
GPCCON 0x56000020 
    Port C Control 
GPCDAT 0x56000024 
    Port C Data 
GPCUP 0x56000028 
    Pull-up Control C 
GPDCON 0x56000030 
    Port D Control 
GPDDA1T 0x56000034 
    Port D Data 
GPDUP 0x56000038 
    Pull-up Control D 
GPECON 0x56000040 
    Port E Control 
GPEDAT 0x56000044 
    Port E Data 
GPEUP 0x56000048 
    Pull-up Control E 
GPFCON 0x56000050 
    Port F Control 
GPFDAT 0x56000054 
    Port F Data 
GPFUP 0x56000058 
    Pull-up Control F 
GPGCON 0x56000060 
    Port G Control 
GPGDAT 0x56000064 
    Port G Data 
GPGUP 0x56000068 
    Pull-up Control G 
GPHCON 0x56000070 
    Port H Control 
GPHDAT 0x56000074 
    Port H Data 
GPHUP 0x56000078 
    Pull-up Control H 
GPJCON 0x560000D0 
    Port J Control 
GPJDAT 0x560000D4 
    Port J Data 
GPJUP 0x560000D8 
    Pull-up Control J 
MISCCR 0x56000080 
 Miscellaneous Control 
DCLKCON 0x56000084 
 DCLK0/1 Control 
EXTINT0 0x56000088 
    External Interrupt Control Register 0 
EXTINT1 0x5600008C 
    External Interrupt Control Register 1 
EXTINT2 0x56000090 
    External Interrupt Control Register 2 










