AMBA Design Kit Technical Reference Manual - ARM Information ...

AHB ComponentsFigure 3-38 shows the register bit assignments.Actual register bit assignmentConfigurationRevisionnumberDesigner1Designer0Partnumber 1Partnumber 07 0 7 4 3 0 7 4 3 0 7 0Conceptual register bit assignment31 24 23 20 19 16 15 12 11 8 7 0ConfigurationRevisionnumberDesignerPart numberFigure 3-38 ICPERIPHID0-3 Register bit assignmentsThe four 8-bit peripheral identification registers are described in the following sections:• Peripheral Identification Register 0• Peripheral Identification Register 1 on page 3-80• Peripheral Identification Register 2 on page 3-80• Peripheral Identification Register 3 on page 3-80.Peripheral Identification Register 0The ICPERIPHID0 register is read-only. It is hard-coded and the fields within theregister determine the reset value. Table 3-32 lists the register bit assignments.Bits Name FunctionTable 3-32 ICPERIPHID0 Register bit assignments[31:8] - Reserved, read undefined, must be written as zeros[7:0] Partnumber0 These bits read back as 0x90ARM DDI 0243C Copyright © 2003, 2007 ARM Limited. All rights reserved. 3-79