PM7312 pmc-sierra, PM7312 Datasheet - Page 186

• Manufacturer Part Number: PM7312
• Description: Freedm 32a1024l Assp Telecom Standard Datasheet
• Manufacturer: pmc-sierra

Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2021833, Issue 2
MPBurstLength[1:0]
MPCommand[1:0]
MPBusy
Indicates how many long words of data will be written to or read from memory in one burst
access. Data read from the memory goes to the Memory Read Data N registers. After a burst of
1 word only the Memory Read Data 1 register is updated, a burst of two words will update this
register and Memory Read Data 2, and so on for bursts of 3 and 4 words. Similarly for write
bursts when data from the Memory Write Data registers is written to the memory.
Table 30 MPBurstLength Function
For accesses to the Chunk Buffer DRAM, only the values 01 and 11 are valid. For accesses to
the TFRAG Any-PHY Channel RAM and the RFRAG RAM only the value of 00 is valid.
Selects the type of access.
Table 31 MPCommand functions
When a command is executed, this bit will automatically be set to a 1. When the command is
complete, this bit will be cleared to zero. This signal is the inverse of MPISTATI found in the
Interrupt Status Register.
MPBurstLength[1:0]
00
01
10
11
MPCommand[1:0]
00
01
10
11
Long Words Selected
1
2
3
4
Command Selected
Reserved
Write
Read
Unused
FREEDM 32A1024L ASSP Telecom Standard Product Data Sheet
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