ARM CM940T 4.3.1CM_ID (0x10000000), 4.3.2CM_PROC (0x10000004)

Programmer’s Reference

4.3.1CM_ID (0x10000000)

The core module ID register (CM_ID) is a read-only register that identifies the board manufacturer, board type, and revision.

31	24 23		16 15		1211		4 3	0
MAN		ARCH		FPGA		BUILD		REV

Table 4-3describes the core module ID register bits.

			Table 4-3 CM_ID register bit descriptions
Bits	Name	Access	Function
31:24	MAN	Read	Manufacturer:
			0x41 = ARM
23:16	ARCH	Read	Architecture:
			0x00 = Generic ARM7x0T or ARM9x0T,
			4 word SDRAM bursts
15:12	FPGA	Read	FPGA type:
			0x00 = XC4036
11:4	BUILD	Read	Build value (ARM internal use)
3:0	REV	Read	Revision:
			0x0 = Rev A
			0x1 = Rev B

4.3.2CM_PROC (0x10000004)

The core module processor register (CM_PROC) is a read-only register that contains the value 0x00000000. This is provided for compatibility with processors that do not have a system control coprocessor (CP15). For the ARM940T, information about the processor can be obtained by reading coprocessor 15 register 0 (CP15 c0).

4-8 © Copyright ARM Limited 1999. All rights reserved. ARM DUI 0125A