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ARM DUI 0224F Copyright © 2003-2007 ARM Limited. All rights reserved. 4-21
4.3.1 ID Register, SYS_ID
The SYS_ID register at
0x10000000
is a read-only register that identifies the board
manufacturer, board type, and revision. Figure 4-6 shows the bit assignment of the
register.
Figure 4-6 ID Register, SYS_ID
Table 4-5 describes the PB926EJ-S ID Register assignment.
4.3.2 Switch Register, SYS_SW
Use the SYS_SW register at
0x10000004
to read the general purpose (user) switch S6. A
value of 1 indicates that the switch is on.
Figure 4-7 SYS_SW
Table 4-5 ID Register, SYS_ID bit assignment
Bits Access Description
[31:24] Read MAN, manufacturer:
0x41
= ARM
[23:16] Read ARCH, architecture:
0x00
= ARM926
[15:12] Read FPGA type:
0x7
= XC2V2000
[11:4] Read Build value (ARM internal use)
[3:0] Read REV, Major revision
0x4
= multilayer AHB