PM7311 pmc-sierra, PM7311 Datasheet - Page 275

• 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
14.11 Context SSRAM Interface (ZBT SSRAM mode)
Figure 55 Read Timing for Chunk Buffer Memory
Figure 56 Write Timing for Chunk Buffer Memory
The following diagrams depict the timing for the pipelined ZBT SSRAM and Standard SSRAM
during a read followed by a write cycle.
Figure 57 Read Followed by Write Timing for ZBT Mode
CC_RDDATA [35:0]
CC_WRDATA[35:0]
CC_ADDR[17:0]
CBADD[12:0]
CBDAT[47:0]
CBADD[12:0]
CBDAT[47:0]
CBADD[10]
CBADD[10]
CBBS[1:0]
CBBS[1:0]
CC_SELB
SYSCLK
CBRASB
CBCASB
SYSCLK
CBRASB
CBCASB
CC_WEB
CBWEB
CBWEB
SYSCLK
CBCSB
CBCSB
ROW ADDR
BANK ADDR
ROW ADDR
ROW ADDR
BANK ADDR
ROW ADDR
R0
1
R1
2
FREEDM 84A1024L ASSP Telecom Standard Product Data Sheet
EN/DIS Auto Pre
COL ADDR
BANK ADDR
Q0
3
En/Dis Auto Pre
COL ADDR
BANK ADDR
WR_W0
W0
Q1
4
WR_W1
W1
5
RD_W0
WR_W2
D0
6
RD_W1
R2
D1
7
WR_Wn
RD_W2
8
RD_Wn
Q2
9
Released
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