Preliminary
Registers
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20.9.5.11 Queue Manager Linking RAM Region 0 Base Address Register (LRAM0BASE)
The queue manager linking RAM region 0 base address register (LRAM0BASE) is used to set the base
address for the first portion of the Linking RAM. This address must be 32-bit aligned. It is used by the
queue manager to calculate the 32-bit linking address for a given descriptor index. It does not support
byte accesses.
The queue manager linking RAM region 0 base address register is shown in
and
described in
.
Figure 20-128. Queue Manager Linking RAM Region 0 Base Address Register (LRAM0BASE)
31
0
region0_base
R/W-0h
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 20-143. Queue Manager Linking RAM Region 0 Base Address Register (LRAM0BASE)
Field Descriptions
Bits
Field Name
Description
31-0
region0_base
This field stores the base address for the first region of the linking RAM. This may be
anywhere in 32-bit address space but would be typically located in on-chip memory.
20.9.5.12 Queue Manager Linking RAM Region 0 Size Register (LRAM0SIZE)
The queue manager linking RAM region 0 size register (LRAM0SIZE) is used to set the size of the
array of linking pointers that are located in region 0 of linking RAM. The size specified the number of
descriptors for which linking information is stored in this region. It does not support byte accesses.
The queue manager linking RAM region 0 size register is shown in
and described in
Figure 20-129. Queue Manager Linking RAM Region 0 Size Register (LRAM0SIZE)
31
0
region0_size
R-0h
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 20-144. Queue Manager Linking RAM Region 0 Size Register (LRAM0SIZE) Field
Descriptions
Bits
Field Name
Description
31-0
region0_size
This field indicates the number of entries that are contained in the linking RAM region 0. A
descriptor with index less than region0_size value has its linking location in region 0. A
descriptor with index greater than region0_size has its linking location in region 1. The
queue manager adds the index (left shifted by 2 bits) to the appropriate regionX_base_addr
to get the absolute 32-bit address to the linking location for a descriptor.
1934
Universal Serial Bus (USB)
SPRUGX9 – 15 April 2011
© 2011, Texas Instruments Incorporated
Содержание TMS320C6A816 Series
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