2.10.9 FIFO Configurations

Unlike the RAM, the FIFO's write width and read width cannot be specified independently. For the FIFO, the write and read widths must be the same. The WIDTH pins are used to specify one of six allowable word widths, as shown in the following table.

Table 2-100. FIFO Width Configurations
WIDTH (2:0)W x D
0001 x 4k
0012 x 2k
0104 x 1k
0119 x 512
10018 x 256
10136 x 128
11xreserved

The DEPTH pins allow RAM cells to be cascaded to create larger FIFOs. The four pins allow depths of 2, 4, 8, and 16 to be specified. Table 2-90 describes the FIFO depth options for various data width and memory blocks.