Fujitsu FR81S User Manual
CHAPTER 49: BUS DIAGNOSIS FUNCTION
4. Registers
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER : BUS DIAGNOSIS FUNCTION
FUJITSU SEMICONDUCTOR CONFIDENTIAL
16
[bit7 to bit4] DEN3 to DEN0: Data error
Data error setting bits.
If DER[3] is "0", parity in bit7 to bit0 of the data bus is properly generated.
If DEN[3] is "1", a parity error for bit7 to bit0 of the data bus is generated.
If DEN[2] is "0", parity in bit15 to bit8 of the data bus is properly generated.
If DEN[2] is "1", a parity error for bit15 to bit8 of the data bus is generated.
If DEN[1] is "0", parity in bit23 to bit16 of the data bus is properly generated.
If DEN[1] is "1", a parity error for bit23 to bit16 of the data bus is generated.
If DEN[0] is "0", parity in bit31 to bit24 of the data bus is properly generated.
If DEN[0] is "1", a parity error for bit31 to bit24 of the data bus is generated.
Notes:
⋅
For RBEN= 0, APBEN= 0, AHBEN= 0, these bits are invalid. Under such condition, it will be the same
behavior as when "0000" is set to these bits.
⋅
Only value set in valid data range of access size is set as an error.
[bit3 to bit0] AEN3 to AEN0: Address error
Address error setting bits
If AEN[3] is "0", parity in bit7 to bit0 of the address bus is properly generated.
If AEN[3] is "1", a parity error for bit7 to bit0 of the address bus is generated.
If AEN[2] is "0", parity in bit15 to bit8 of the address bus is properly generated.
If AEN[2] is "1", a parity error for bit15 to bit8 of the address bus is generated.
If AER[1] is "0", parity in bit23 to bit16 of the address bus is properly generated.
If AEN[1] is "1", a parity error for bit23 to bit16 of the address bus is generated.
If AEN[0] is "0", parity in bit31 to bit24 of the address bus is properly generated.
If AEN[0] is "1", a parity error for bit31 to bit24 of the address bus is generated.
Note:
For RBEN= 0, APBEN= 0, AHBEN= 0, these bits are invalid. Under such condition, it will be the same
behavior as when "0000" is set to these bits.
MB91520 Series
MN705-00010-1v0-E
2109