MPAMCFG_MBW_WINWD, MPAM Memory Bandwidth Partitioning Window Width Configuration Register
The MPAMCFG_MBW_WINWD characteristics are:
Purpose
MPAMCFG_MBW_WINWD is a 32-bit register that shows (and sets) the value of the window width for the PARTID in MPAMCFG_PART_SEL.
MPAMCFG_MBW_WINWD is read-only if Mext-PAMF_MBW_IDR.WINDWR == 0, and the window width is set by the hardware, even if variable.
MPAMCFG_MBW_WINWD is read-write if MPAMF_MBW_IDR.WINDWR == 1, permitting configuration of the window width for each PARTID independently on hardware that supports this functionality.
Configuration
The power domain of MPAMCFG_MBW_WINWD is IMPLEMENTATION DEFINED.
This register is present only when MPAMF_IDR.HAS_MBW_PART == 1. Otherwise, direct accesses to MPAMCFG_MBW_WINWD are IMPLEMENTATION DEFINED.
Attributes
MPAMCFG_MBW_WINWD is a 32-bit register.
Field descriptions
The MPAMCFG_MBW_WINWD bit assignments are:
Bits [31:24]
Reserved, RES0.
US_INT, bits [23:8]
Window width, integer microseconds.
This field reads (and sets) the integer part of the window width in microseconds for the PARTID selected by MPAMCFG_PART_SEL.
US_FRAC, bits [7:0]
Window width, fractional microseconds.
This field reads (and sets) the fractional part of the window width in microseconds for the PARTID selected by MPAMCFG_PART_SEL.
Accessing the MPAMCFG_MBW_WINWD
This register is part of the MPAMF_BASE memory frame. In a system that supports Secure and Non-secure memory maps, the MPAMF_BASE frame must be accessible in both Secure and Non-secure memory address maps.
MPAMCFG_MBW_WINWD must be accessible from the Non-secure and Secure address maps.
MPAMCFG_MBW_WINWD must be banked for the Secure and Non-secure address maps. The Secure instance accesses the window width used for Secure PARTIDs, and the Non-secure instance accesses the window width used for Non-secure PARTIDs.
MPAMCFG_MBW_WINWD can be accessed through the memory-mapped interfaces:
Component | Frame | Offset | Instance |
---|---|---|---|
MPAM.any | MPAMF_BASE_s | 0x0220 | MPAMCFG_MBW_WINWD_s |
This interface is accessible as follows:
- When MPAMF_MBW_IDR.WINWR == 0 access to this register is RO.
- Otherwise access to this register is RW.
Component | Frame | Offset | Instance |
---|---|---|---|
MPAM.any | MPAMF_BASE_ns | 0x0220 | MPAMCFG_MBW_WINWD_ns |
This interface is accessible as follows:
- When MPAMF_MBW_IDR.WINWR == 0 access to this register is RO.
- Otherwise access to this register is RW.