3.3.16. PrimeCell identification registers, UARTPCellID0-3

The UARTPCellID0-3registers 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 UARTPCellID register is set to 0xB105F00D. Figure 3.2 shows the bit assignment for the UARTPCellID0-3 registers.

Figure 3.2. PrimeCell identification register bit assignments

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

UARTPCellID0 register

The UARTPCellID0 register is hard coded and the fields within the register determine the reset value. Table 3.23 shows the bit assignment of the UARTPCellID0 register.

Table 3.23. UARTPCellID0 register

BitsName

Description

15:8

-

Reserved, read undefined, must read as zeros

7:0

UARTPCellID0

These bits read back as 0x0D

UARTPCellID1 register

The UARTPCellID1 register is hard coded and the fields within the register determine the reset value. Table 3.24 shows the bit assignment of the UARTPCellID1 register.

Table 3.24. UARTPCellID1 register read bits

BitsName

Description

15:8

-

Reserved, read undefined, must read as zeros

7:0

UARTPCellID1

These bits read back as 0xF0

UARTPCellID2 register

The UARTPCellID2 register is hard coded and the fields within the register determine the reset value. Table 3.25 shows the bit assignment of the UARTPCellID2 register.

Table 3.25. UARTPCellID2 register read bits

BitsName

Description

15:8

-

Reserved, read undefined, must read as zeros

7:0

UARTPCellID2

These bits read back as 0x05

UARTPCellID3 register

The UARTPCellID3 register is hard coded and the fields within the register determine the reset value. Table 3.26 shows the bit assignment of the UARTPCellID3 register.

Table 3.26. UARTPCellID3 register read bits

BitsName

Description

15:8

-

Reserved, read undefined, must read as zeros

7:0

UARTPCellID3

These bits read back as 0xB1

Copyright © 2000, 2001, 2005 ARM Limited. All rights reserved.ARM DDI 0183F
Non-Confidential