PM7311 pmc-sierra, PM7311 Datasheet - Page 209

• Manufacturer Part Number: PM7311
• Description: Freedm 84a1024l Assp Telecom Standard Datasheet
• Manufacturer: pmc-sierra

Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2021832, Issue 2
FUNC_MODE
ECC_OFF
DECC
Reserved
When set, this bit indicates that the CB_DRAMC is in “Functional Mode”, i.e., it is ready to
perform access to the Chunk Buffer on behalf of the various functional units of the chip.
When the Free Pool Pointer (FPP) FIFO is initialized by the CB_DRAMC this bit will be
automatically set by the CB_DRAMC at the end of the FPP FIFO initialization procedure.
Otherwise this bit needs to be set by the microprocessor (when it finishes initializing the FPP
FIFO).
Setting this bit turns ECC off. ECC will not be added or corrected. When using the
microprocessor interface to access the SDRAMs, this bit must be set to 1.
The diagnostic ECC bit (DECC) configures TFRAG to logically invert the ECC for
diagnostic purposes. When DECC is a logic one, ECC generated will be inverted. When
DECC is a logic zero, a correct ECC will be generated.
The reserved bit must be set low for correct operation of the FREEDM 84A1024L device.
FREEDM 84A1024L ASSP Telecom Standard Product Data Sheet
Released
209