7.3 L2 RAM memories

The L2 memory system contains several RAM memories that support optional ECC or parity error detection mechanisms.

Any RAM memory that uses ECC support can perform single-bit error correction and double-bit error detection. Contents of the RAM memories with parity support can invalidate entries if a parity error is detected because this data is associated with read-only structures.
The following table shows all RAM memories contained in the L2 memory system.

Table 7-3 L2 RAM memories

RAM memory ECC or Parity
L2 Tag RAM ECC
L2 Snoop Tag RAM ECC
L2 Data RAM ECC
L2 Dirty RAM ECC
L2 Inclusion PLRU RAM ECC
Non-ConfidentialPDF file icon PDF versionARM 100095_0002_04_en
Copyright © 2014-2016 ARM. All rights reserved.