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S3C24A0A

32-BIT RISC MICROPROCESSOR

Samsung 

Table of Contents (Continued)

Chapter 19 MODEM Interface

Overview........................................................................................................................................................19-1

Features................................................................................................................................................19-2

Hardware Interface ...............................................................................................................................19-2

Signal Description.................................................................................................................................19-2

Interrupt Ports .......................................................................................................................................19-2

Address Mapping..................................................................................................................................19-3

Timing Diagram ....................................................................................................................................19-4

Software Interface.................................................................................................................................19-5

Modem Interface Special Registers ..............................................................................................................19-6

Interrupt Request to AP Register (INT2AP) .........................................................................................19-6

Interrupt Request to Modem Register (INT2MDM) ..............................................................................19-6

Chapter 20 General Purpose I/O Ports

Overview........................................................................................................................................................20-1

Port Control Descriptions ..............................................................................................................................20-3

Gpio Port Configuration Register For Normal Mode (GPCON_U, GPCON_M, GPCON_L) ...............20-3

Gpio Port Data Register For Normal Mode (GPDAT) ..........................................................................20-3

Gpio Port Pull-Pu Control Register for Normal Mode (GPPU) .............................................................20-3

External Interrupt Control Register (Extintcn/ Eintfltn/ Eintmask/ Eintpend) ........................................20-3

Peripheral Port Pull-Up Control Register for Normal Mode (PERIPU).................................................20-3

Alive Control Register (ALIVECON) .....................................................................................................20-4

Gpio Output Control Register for Sleep Mode (GPOEN_SLEEP) .......................................................20-4

Gpio Pull-Up Control Register for Sleep Mode (GPPU_SLEEP) .........................................................20-4

Peripheral Port Output Data Register for Sleep Mode (PERIDAT_SLEEPN)......................................20-4

Peripheral Port Output Control Register for Sleep Mode (PERIOEN_SLEEPN) .................................20-4

Peripheral Port Pull-Up Control Register for Sleep Mode (PERIPU_SLEEP) .....................................20-4

Reset Count Compare Register (RstCnt).............................................................................................20-4

General Purpose RAM Array (GPRAMn) .............................................................................................20-4

I/O Port Control Register ...............................................................................................................................20-5

GPIO Upper Port Control Register (GPCON_U)..................................................................................20-5

Gpio Middle Port Control Register (GPCON_M) ..................................................................................20-6

Gpio Lower Port Control Register (GPCON_L)....................................................................................20-7

Gpio Port Data Register (GPDAT)........................................................................................................20-8

Gpio Port Pull Up Resister Control Register (GPPU)...........................................................................20-8

External Interrupt Control Register (EXTINTC0) ..................................................................................20-9

S3C24A0A MICROPROCESSOR

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