PM7311 pmc-sierra, PM7311 Datasheet - Page 194

• 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
Register 0x800: Memory Port Control
Writes to this register will start a BUMP2 access to the internal aperture defined by
MPMemSelect. The completion of one access is signaled by BUMP2 asserting MPBusy to state
low. During an internal access, while MPBusy is high, all BUMP2 Control Registers are
accessible by the microprocessor.
MPQuadAddr[23:0]
MPMemSelect[2:0]
Indicates the beginning quad long word address for the operation in memory. Up to 96
megabytes of memory is supported in each aperture by this address (or 4M 16-byte or 24-byte
regions).
For Chunk Buffer DRAM accesses, only even number addresses are valid.
Selects the memory aperture. The aperture is chosen according to the following table.
Table 32 MPMEMSelect Function
MPMemSelect[2:0]
000
001
010
011
100
101
110
111
Bit
Bit 31
Bit 30
To
Bit 29
Bit 28
To
Bit 27
Bit 26
To
Bit 24
Bit 23
To
Bit 0
Type
R
R/W
R/W
R/W
R/W
Aperture Selected
Connection Context SRAM
Chunk Buffer DRAM
Resequencing DRAM
Statistics Counters
EQM-12 Memory
TFRAG Any-PHY Channel RAM
RFRAG Memory
Unused
FREEDM 84A1024L ASSP Telecom Standard Product Data Sheet
Function
MPBusy
MPCommand[1:0]
MPBurstLength[1:0]
MPMemSelect[2:0]
MPQuadAddr[23:0]
Default
0
0
0
0
0
Released
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