PM7312 pmc-sierra, PM7312 Datasheet - Page 241

• 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
11.2.6
Chunk Buffer Memory Map
This external memory can be read or written with any value for test purposes before Functional
Mode (FUNC_MODE) is enabled in the CB_DRAMC Status and Control register. The contents of
the memory must be left in the state described below for correct operation. Certain fields can be
setup by H/W (also described below) if selected.
Table 44 Chunk Buffer Memory Map (Only Even Addresses are Valid)
Address
000000
(4M)
3FFFFF
400000
(256K)
43FFFF
440000
7FFFFF
800000
(4M)
BFFFFF
Record
Reserved
IN_FPP_STORE
Unused
Reserved
FREEDM 32A1024L ASSP Telecom Standard Product Data Sheet
Bits
47:0
47:0
47:0
47:0
Description
X
Ingress Free List Pointers. Each entry contains 2 x 48 bit
words making up a 96 bit word. For S/W setup of the Free
List Pointers, the record must be filled with the following
data: 00400-7FFFF.
I.e.. Address = 400000
**Address = 400002
,000
**Address = 400004
**Address = 400006
**Address = 43FDFC
**Address = 43FDFC
This record can also be set up by h/w by setting the
FPP_INIT bit in the CB_DRAM Status Register.
X
X
Data = 000
Data = 000
Data = 000
Data = 111
Data = 111
Address = 43FE00-43FFFF
Data = Leave at default value.
.
.
.
2
,0405
000
000
000
000
111
111
16
2
2
2
2
2
2
,0402
,0406
,040A
,040E
,FFFA
,FFFE
,00
2
2
2
2
2
,0400
,0408
,040C
,FFF8
,FFFC
2
,8 bit ECC
16
16
16
16
16
16
,000
,000
16
16
,000
,000
16
16
,111
,111
16
,000
,000
Data = 000
,000
,111
,111
2
2
2
2
2
2
,0403
,0407
,040B
,040F
,FFFB
,FFFF
2
2
2
2
2
,0401
,0409
,040D
,FFF9
,FFFD
16
16
16
16
16
16
,00
,00
,00
,00
16
16
,00
,00
2
16
16
,0404
16
,00
,00
2
2
,00
,00
2
2
,00
,8 bit ECC
,8 bit ECC
,8 bit ECC
2
2
,8 bit ECC
,8 bit ECC
,8 bit ECC
2
2
2
2
,8 bit ECC
,8 bit ECC
,8 bit ECC
,8 bit ECC
2
,8 bit ECC
16
Released
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