Omega-engineering IOP-241 Manual do Utilizador descarregar pdf (Página 25)

5. Register Descriptions

The program registers of the IOP-241 occupy eight adjacent bytes of I/O address space. These

registers must be programmed to control the operation of the IOP-241. The table below lists

the program registers along with their offsets relative to the I/O space base address at which

the IOP-241 is located:

Interrupt Acknowledge Register

Interrupt Status Register

Interrupt Mode Control Register

R/W

Port C Interrupt Enable Register

R/W

Data Port C Control Register

R/W

Data Port B Control Register

R/W

Data Port A Control Register

R/W

RegisterRead/WriteOffset

Table 5-1. IOP-241 Program Registers

Each register of the IOP-241 is discussed in detail in the following sections.

5.1 Data Port A Control Register (Base + 0)

The Data Port A Control Register contains the control bits for I/O channels DATA0 - DATA7.

Each I/O channel may be individually programmed for input by writing a '1' to the

appropriate bit of this register.

General Purpose I/O bit 0

DATA0

General Purpose I/O bit 1

DATA1

General Purpose I/O bit 2

DATA2

General Purpose I/O bit 3

DATA3

General Purpose I/O bit 4

DATA4

General Purpose I/O bit 5

DATA5

General Purpose I/O bit 6

DATA6

General Purpose I/O bit 7

DATA7

DescriptionNameBit

Table 5-2. Data Port A Control Register

IOP-241 Users Manual 25

1 2 ... 20 21 22 23 24 25 26 27 28 29 30 ... 35 36

Comentários a estes Manuais

Sem comentários

Omega-engineering IOP-241 Manual do Utilizador Página 25

Comentários a estes Manuais

Manuais e produtos relacionados com Hardware Omega-engineering IOP-241