參數(shù)資料
型號: CYDD09S36V18-200BBXC
廠商: CYPRESS SEMICONDUCTOR CORP
元件分類: SRAM
英文描述: 128K X 72 DUAL-PORT SRAM, 7.2 ns, PBGA256
封裝: 17 X 17 MM, 1 MM PITCH, LEAD FREE, MO-192, FBGA-256
文件頁數(shù): 3/53頁
文件大?。?/td> 2422K
代理商: CYDD09S36V18-200BBXC
FullFlex
Document #: 38-06072 Rev. *I
Page 11 of 53
Selectable Pipelined/Flow-through Mode
To meet data rate and throughput requirements, the FullFlex
families offer selectable pipelined or flow-through mode.
Flow-through mode is only supported in the FullFlex72
devices when the port is configured in SDR mode. Echo clocks
are not supported in flow-through mode and the DLL must be
disabled.
Flow-through mode is selected by the FTSEL pin. Strapping
this pin HIGH selects pipelined mode. Strapping this pin LOW
selects flow-through mode.
DLL
The FullFlex families of devices have an on-chip DLL.
Enabling the DLL reduces the clock to data valid (tCD) time
allowing more setup time for the receiving device. For
operation at or below 100 MHz, the DLL must be disabled. This
is selectable by strapping LowSPD LOW.
Whenever the operating frequency is altered beyond the Clock
Input Cycle to Cycle Jitter spec, the DLL is required to be reset
followed by 1024 clocks before any valid operation.
LowSPD pins can be used to reset the DLL(s) for a single port
independent of all other circuitry. MRST can be used to reset
BE[1]
BE[5]
DQ[51]
C
DQ[15]
BE[1]
DQ[15]
C
BE[1]
BE[5]
DQ[50]
C
DQ[14]
BE[1]
DQ[14]
C
BE[1]
BE[5]
DQ[49]
C
DQ[13]
BE[1]
DQ[13]
C
BE[1]
BE[5]
DQ[48]
C
DQ[12]
BE[1]
DQ[12]
C
BE[1]
BE[5]
DQ[47]
C
DQ[11]
BE[1]
DQ[11]
C
BE[1]
BE[5]
DQ[46]
C
DQ[10]
BE[1]
DQ[10]
C
BE[1]
BE[5]
DQ[45]
C
DQ[9]
BE[1]
DQ[9]
C
BE[0]
BE[4]
DQ[44]
C
DQ[8]
BE[0]
DQ[8]
C
BE[0]
BE[4]
DQ[43]
C
DQ[7]
BE[0]
DQ[7]
C
BE[0]
BE[4]
DQ[42]
C
DQ[6]
BE[0]
DQ[6]
C
BE[0]
BE[4]
DQ[41]
C
DQ[5]
BE[0]
DQ[5]
C
BE[0]
BE[4]
DQ[40]
C
DQ[4]
BE[0]
DQ[4]
C
BE[0]
BE[4]
DQ[39]
C
DQ[3]
BE[0]
DQ[3]
C
BE[0]
BE[4]
DQ[38]
C
DQ[2]
BE[0]
DQ[2]
C
BE[0]
BE[4]
DQ[37]
C
DQ[1]
BE[0]
DQ[1]
C
BE[0]
BE[4]
DQ[36]
C
DQ[0]
BE[0]
DQ[0]
C
Table 3. Data Pin Assignment for SDR and DDR Configuration (continued)
BE Pin Name for
DDR
BE Pin Name for
SDR
x72 SDR Mode
x36 DDR Mode
Data Pin Name
Related Rising Edge
Clock for Write
Related Rising Edge
Clock for Read
Data Pin
Name
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