9 Latched Buffer Fill Level, LBUFLEVEL

Reading this register returns the maximum fill level of the trace memory in 32-bit words since this register was last read. Reading this register also results in its contents being updated to the current fill level. When entering Disabled state, it retains its last value. While in Disabled state, reads from this register do not affect its value. When exiting Disabled state, the LBUFLEVEL register is updated to the current fill level.

The LBUFLEVEL register characteristics are:

Attributes
Offset

0x002C

Type

Read-only

Reset

0x000000--

Width

32

The following figure shows the bit assignments.

Figure 9-289 LBUFLEVEL register bit assignments
To view this graphic, your browser must support the SVG format. Either install a browser with native support, or install an appropriate plugin such as Adobe SVG Viewer.


The following table shows the bit assignments.

Table 9-300 LBUFLEVEL register bit assignments

Bits Reset value Name Function
[31:8] 0x0 RAZ/WI

Read-As-Zero, Writes Ignored.

[7:0] UNKNOWN LBUFLEVEL

Latched Buffer Fill Level. Indicates the maximum fill level of the trace memory in 32-bit words since this register was last read. The width of the register is 1 + log2(MEM_SIZE).

Non-ConfidentialPDF file icon PDF version100806_0300_00_en
Copyright © 2017, 2018 Arm Limited or its affiliates. All rights reserved.