Specifications

Programmers Model
ARM DUI 0447J Copyright © 2009-2014, ARM. All rights reserved. 4-16
ID052914 Non-Confidential
4.4.9 24MHz Counter Register
The SYS_24MHz Register characteristics are:
Purpose Provides a 32-bit count value.
Usage constraints There are no usage constraints.
Configurations Available in all configurations.
Attributes See Table 4-3 on page 4-8.
Table 4-12 shows the bit assignments.
4.4.10 Miscellaneous Flags Register
The SYS_MISC Register characteristics are:
Purpose Returns the value of the detect signal of miscellaneous flags related to
communication.
Usage constraints See Table 4-13 on page 4-17.
Configurations See Table 4-13 on page 4-17.
Attributes See Table 4-3 on page 4-8.
Figure 4-3 on page 4-10 shows the bit assignments.
Figure 4-9 SYS_MISC Register bit assignments
Table 4-12 SYS_24MHz Register bit assignments
Bits Name Reset Description
[31:0] SYS_24MHz The register is set to zero by a
CB_nRST reset then continues to count.
The count increments at 24MHz frequency from the 24MHz
crystal reference output REFCLK24MHZ from OSC0.
0
31
12
Undefined
14 13
nDBDET1 for site1
Undefined
20 19
2122
SB1/SB2_EVENTO [1:0]
NOR select
Undefined
USB_SUSPEND[1:0]
232425
11
nDBDET2 for site2
18
SWINT
262728
USBnOEN[1:0]
SB_EVENTI
15
MASTERSITE