Siemens ERTEC200

4.2.1 Address Assignment of GPIO Registers

The GPIO registers are 32 bits in width. The registers can be read or written to with 8-bit, 16-bit, or 32-bit accesses.

GPIO (Base Address 0x4000_2500)

Address Address Area Access Default Description

GPIO_IOCTRL 0x0000 4 bytes W/R 0xFFFFFFFF Configuration register for

GPIO

GPIO_OUT 0x0004 4 bytes W/R 0x00000000 Output register for GPIO

GPIO_IN 0x0008 4 bytes R

Port

assignment Input register for GPIO

GPIO_PORT_MODE_L 0x000C 4 bytes W/R 0x00000000

Function assignment of

GPIO port 0 to 15

GPIO_PORT_MODE_H 0x0010 4 bytes W/R 0x00000000

Function assignment of

GPIO port 16 to 31

GPIO_POLSEL 0x0014 4 bytes W/R 0x00000000

Interrupt polarity of GPIO

interrupt

GPIO2_IOCTRL 0x0020 4 bytes W/R 0x00001FFF

Configuration register for

GPIO2

GPIO2_OUT 0x0024 4 bytes W/R 0x00000000 Output register for GPI O2

GPIO2_IN 0x0028 4 bytes R

Port

assignment Input register for GPIO2

Table 9: Overview of GPIO Registers

4.2.2 GPIO Register Description

GPIO_IOCTRL W/R Addr.: 0x4000_2500 Default: 0xFFFF_FFFF

Description Configuration register for General Purpose IO[31:0]

Bit No. Name Description

31 - 0 GPIO_IOCTRL[31:0] 0 : GPIOx is output

1: GPIOx is input

x = Bit 0 ... 31

GPIO_ OUT W/R Addr.: 0x4000_2504 Default: 0x0000_0000

Description Output register for General Purpose IO[31:0]

Bit No. Name Description

31..0 GPIO_OUT[31:0] 0: GPIO outputx = 0, 1: GPIO outputx = 1

GPIO_IN R Addr.: 0x4000_2508 Default: Port assignment

Description Input register for General Purpose IO[31:0]

Bit No. Name Description

31..0 GPIO_IN[31:0] 0: GPIO inputx = 0, 1: GPIO inputx = 1

GPIO_PORT_MODE_L W/R Addr.: 0x4000_250C Default: 0x0000_0000

Description Configuration register for GP-IO[15:0]

Function assignment:

00 = Function 0; 01 = Function 1; 10 = Function 2; 11 = Function 3

Bit No. Name Description

1:0 GPIO0_PORT_MODE Port GPIO[0];

3:2 GPIO1_PORT_MODE Port GPIO[1];

5:4 GPIO2_PORT_MODE Port GPIO[2];

7:6 GPIO3_PORT_MODE Port GPIO[3];

9:8 GPIO4_PORT_MODE Port GPIO[4];

11:10 GPIO5_PORT_MODE Port GPIO[5];

13:12 GPIO6_PORT_MODE Port GPIO[6];

15:14 GPIO7_PORT_MODE Port GPIO[7];

Technical data subject to change Version 1.1.0