Achronix Speedster22i User Macro Guide Manuel d'utilisateur télécharger pdf (Page 114)

Memories BRAM80K

Speedster22i Macro Cell Library

AchronixSemiconductorProprietary PAGE 97

Table 6-10: douta(doutb) bit assignments per porta_read_width(portb_read_width) values

porta_read_width,

portb_read_width

doutpxa[3:0],

doutpxb[3:0]

doutpa[3:0],

doutpb[3:0]

douta[31:0],

doutb[31:0]

user_dout[39:36] user_dout[35:32] user_dout[31:0]

4’hx user_dout[35:32] user_dout[31:0]

4’hx 4’hx user_dout[31:0]

2’bxx,user_dout[19:18] 2’bxx,user_dout[17:16] 16’hxxxx,user_dout[15:0]

4’hx user_dout[17:16] 16’hxxxx,user_dout[15:0]

4’hx 4’hx 16’hxxxx,user_dout[15:0]

3’bxxx,user_dout[9] 3’bxxx,user_dout[8] 24’hxxxxxx,user_dout[7:0]

4’hx 3’bxxx,user_dout[8] 24’hxxxxxx,user_dout[7:0]

4’hx 4’hx 24’hxxxxxx,user_dout[7:0]

4’hx 3’bxxx,user_dout[4] 28’hxxxxxxx,user_dout[3:0]

4’hx 4’hx 28’hxxxxxxx,user_dout[3:0]

4’hx 4’hx 30’hxxxxxxxx,user_dout[1:0]

4’hx 4’hx 31’hxxxxxxxx,user_dout[0]

Table 6-11: BRAM80K Address Bus Mapping (Per Port)

Memory

Organization

Used Address

addra/addrb Pins

Unconnected

Address Pins

2kx40 15:5 4:0

2kx36 15:5 4:0

2kx32 15:5 4:0

4kx20 15:4 3:0

4kx18 15:4 3:0

4kx16 15:4 3:0

8kx10 15:3 2:0

8kx9 15:3 2:0

8kx8 15:3 2:0

16kx5 15:2 1:0

16kx4 15:2 1:0

32kx2 15:1 0

64kx1 15:0 -

1 2 ... 109 110 111 112 113 114 115 116 117 118 119 ... 223 224

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Achronix Speedster22i User Macro Guide Manuel d'utilisateur Page 114

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