Queue Base Address Register (Qbar) - Motorola MPC8240 User Manual

9.3.4.2.12 Queue Base Address Register (QBAR)

The QBAR specifies the beginning address of the circular queue structure in local memory.
Figure 9-20 shows the bits of the QBAR.
QBA
31
Figure 9-20. Queue Base Address Register (QBAR)
Table 9-24 shows the bit settings for the QBAR.
Table 9-24. QBAR Field Descriptions— Offset 0x0_0170
Reset
Bits Name
Value
31–20 QBA All 0s
19–0 — All 0s
20 19
R/W
RW Queue base address. Base address of circular queue in local memory. Note that
the circular queue must be aligned on a 1-Mbyte boundary.
R Reserved
Chapter 9. Message Unit (with I
0 0 0 0_0 0 0 0_0 0 0 0_0 0 0 0_0 0 0 0
Description
O)
2
I O Interface
2
Reserved
0
9-21