Achronix Speedster22i User Macro Guide Manual do Utilizador descarregar pdf (Página 173)

Memories LRAM640

Speedster22i Macro Cell Library

AchronixSemiconductorProprietary PAGE 156

LRAM640

640-bit (64x10) Simple-Dual-Port Memory

LRAM640

rdaddr[5:0]

dout[9:0]

rdclk

wraddr[5:0]

din[9:0]

wren

wclk

rstregn

outregce

Figure 6-29: Logic Symbol

TheLog

icRAM(LRAM640)implementsa640‐bitmemoryblockwithonewriteportandone

readport.TheLRAM640canbeconfiguredaseithera64x10simpledual‐port(1writeport, 1

read port) RAM or a 64x10 single port (1 read/write port) RAM.The LRAM640 has a

synchronous wr

ite port. The  read port can be configured for either asynchronous or

synchronousreadoperations.ThismemoryblockisdistributedintheFPGAfabricoccupying

roughlyfivepercentoftheReconfigurableLogicBlocks.

Figure 6-30: LR

AM640 Block Diagram

Register

Register

rdclk

wraddr[5:0]

din[9:0]

wren

rstregn

dout[9:0]

outregce

rdaddr[5:0]

wrclk

File

1 2 ... 168 169 170 171 172 173 174 175 176 177 178 ... 223 224

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