| |||
Home > Fault Detection > RAM protection > RAM configuration |
Table 7.3 shows the RAM configuration with or without ECC.
Table 7.3. RAM configuration with or without ECC
RAM | Storage for a RAM set without ECC | Storage for a RAM set with ECC |
---|---|---|
Data tag RAM | 4x29 bits | 4x(25+7) bits |
Data data RAM | 8x32 bits | 8x(32+7) bits |
Instruction tag RAM | 4x21 bits | 4x(21+7) bits |
Instruction data RAM | 4x64 bits | 4x(64+8) bits |
SCU tag RAMs | 4x23 bits | 4x(23+7) bits |
Data TCM | 2x32 bits | 2x(32+7) bits |
Instruction TCM | 4x64 bits | 4x(64+8) bits |
Table 7.4 shows the RAM configuration with or without parity.
Table 7.4. RAM configuration with or without parity
RAM | Storage for a set without parity | Storage for a set with parity |
---|---|---|
BTAC | 2x32+2x28 bits | 2x(32+4) + 2x(28+4) bits |
PRED | 4x4 bits | 4x(4+4) bits |