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Achronix Speedster22i User Macro Guide Manuale Utente Pagina 165

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Memories BRAM80KECC
Speedster22i Macro Cell Library
AchronixSemiconductorProprietary PAGE 148
BRAM80KECC Pins
Table 6-41: BRAM80KECC Pin Descriptions
Name Type Description
din[31:0] Write Port Data Input.
dinp[3:0] Write Port Parity Input (may be used for data).
dinpx[3:0] Write Port Extended Parity input (may be used for data).
wraddr[10:0] Write Address.
wren Write Enable (
active-high).
wrclk Write Clock (pr
ogrammable, default rising edge = 1’b1).
rdaddr[10:0] Read Address.
rden Read Enable (a
ctive-high).
rstreg Output Register Reset (
programmable, default active-high).
outregce Output Register Clock Enable (a
ctive-high).
rdclk Read Clock (pr
ogrammable, default rising edge = 1’b1).
dout[31:0] Read Port Data Output.
doutp[3:0] Read Port Parity Output.
doutpx[3:0] Read Port Extended Parity Output.
sbit_error
Single Bit Error. (
active-high). The sbit_error signal is asserted during a
read operation when a single bit error is detected and the corrected
word is output on the dout pins. The memory contents are not
corrrected by the error correction circuitry. The sbit_error signal is
aligned with the associated read data word.
dbit_error
Double Bit Error. (ac
tive-high). The dbit_error signal is asserted during a
read operation when a two-bit error is detected. In the case of a two-bit
error condition, the uncorrected read data word is output on the dout
pins. The dbit_error signal is asserted one cycle after the associated read
data word.
rdaddrecc[10:0]
Read Address.
The rdaddrecc output is the 11-bit address of the read
data word.
enc_parity[6:0] Encoder Parity.
Parameters
Table 6-42: BRAM80KECC Parameters
Parameter Defined Values Default Value
en_out_reg 1’b0
reg_initval 40’h0
reg_srval 40’h0
reg_rstval 1’b1
regce_priority “rstreg”
encoder_enable 1’b1
decoder_enable 1’b1
mem_init_file “”
input
input
input
input
input
input
input
input
input
input
input
output
output
output
output
output
output
output
1’b0,1’b1
40-bit hexadecimal number
40-bit hexadecimal number
1’b0,1’b1
“rstreg”, ”regce”
1’b0,1’b1
1’b0,1’b1
<path to HEX file>
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