43.8.56 Operand size register.

Table 43-57. Register Bit Attribute Legend
SymbolDescriptionSymbolDescriptionSymbolDescription
RReadable bitHCCleared by Hardware(Grey cell)Unimplemented
WWritable bitHSSet by HardwareXBit is unknown at Reset
KWrite to clearSSoftware settable bit——
Name: PK_Registers__OpSize
Offset: 0x1201C
Reset: 0x00001000
Property: RW

Bit 3130292827262524 
          
Access  
Reset  
Bit 2322212019181716 
          
Access  
Reset  
Bit 15141312111098 
    OpSize[12:8] 
Access RWRWRWRWRW 
Reset 10000 
Bit 76543210 
 OpSize[7:0] 
Access RWRWRWRWRWRWRWRW 
Reset 00000000 

Bits 12:0 – OpSize[12:0] Operand size (number of bytes): 0x0100: 256 0x0209: 521 0x0800: 2048 0x0C00: 3072 0x1000: 4096 This register is used when the memory is accessed via AHB Master