IBM 6C1 - Memory DIMM Present Detect Bits (PD-Bits)

Memory DIMM Present Detect Bits (PD-Bits)
The following table expands on the Memory Error Notes found on page 126, where yy
is the PD value in the table below and xxx are the last three digits of the error code.
Use these values to identify the type of memory that generated the error.
If you replace FRUs or perform an action, and the problem is still not corrected, go to
“MAP 1540: Minimum Configuration” on page 63 unless otherwise indicated in the
tables.
Table 4. Memory DIMM PD bits
PD value Size Clock Cycle (nsecs) Parity/ ECC
28 512 MB 10 ECC
2A 512 MB 8 ECC
38 128 MB 10 ECC
3A 128 MB 8 ECC
48 64 MB 10 ECC
4A 64 MB 8 ECC
58 32 MB 10 ECC
5A 32 MB 8 ECC
68 256 MB 10 ECC
6A 256 MB 8 ECC
Note: Memory DIMMs must be installed in pairs.
176 Service Guide