Avago Technologies LSI53C825AE - Manual (Page 39)

External Memory Interface 2-15
The LSI53C825A supports a variety of sizes and speeds of expansion
ROM, using pull-down resistors on the MAD[3:0] pins. The encoding of
pins MAD[3:1] allows the user to define how much external memory is
available to the LSI53C825A.
Table 2.2 shows the memory space
associated with the possible values of MAD[3:1]. The MAD[3:1] pins are
fully defined in
Chapter 4, “Registers.”