You copied the Doc URL to your clipboard.

3.3.12. PrimeCell identification registers, GPIOPCellID0-3

The GPIOPCellID0-3 registers are four 8-bit wide registers, that span address locations 0xFF0-0xFFC. The registers can conceptually be treated as a 32-bit register. The register is used as a standard cross-peripheral identification system. The GPIOPCellID register is set to 0xB105F00D. Figure 3.2 shows the bit assignment for the GPIOPCellID0-3 registers.

Figure 3.2. PrimeCell identification register bit assignment

Figure 3.2. PrimeCell identification register bit
assignment

The four 8-bit PrimeCell identification registers are described in the following subsections:

GPIOPCellID0 register

The GPIOPCellID0 register is hard coded and the fields within the register determine the reset value. Table 3.16 shows the bit assignment of the GPIOPCellID0 register.

GPIOPCellID0 register
Bits Name

Description

15:8

-

Reserved, read undefined, must read as zeros

7:0

GPIOPCellID0

These bits read back as 0x0D

GPIOPCellID1 register

The GPIOPCellID1 register is hard coded and the fields within the register determine the reset value. Table 3.17 shows the bit assignment of the GPIOPCellID1 register.

GPIOPCellID1 register read bits
Bits Name

Description

15:8

-

Reserved, read undefined, must read as zeros

7:0

GPIOPCellID1

These bits read back as 0xF0

GPIOPCellID2 register

The GPIOPCellID2 register is hard coded and the fields within the register determine the reset value. Table 3.18 shows the bit assignment of the GPIOPCellID2 register.

GPIOPCellID2 register read bits
Bits Name

Description

15:8

-

Reserved, read undefined, must read as zeros

7:0

GPIOPCellID2

These bits read back as 0x05

GPIOPCellID3 register

The GPIOPCellID3 register is hard coded and the fields within the register determine the reset value. Table 3.19 shows the bit assignment of the GPIOPCellID3 register.

GPIOPCellID3 register read bits
Bits Name

Description

15:8

-

Reserved, read undefined, must read as zeros

7:0

GPIOPCellID3

These bits read back as 0xB1

Was this page helpful? Yes No