18 User's Manual
Standard Type Cache Size Selection
Note :
All Data SRAM must be mixed mode, and Tag SRAM must be 5V.
All of Data and Tag SRAM must with a speed of 15ns or faster.
256 KB Cache Memory
256KB
32K x 8
32K x 8
512 KB Cache Memory
512KB
64K x 8
32K x 8
541 mainboard supports standard
type extended cache memory sizes
of 256KB and 512KB. Cache
memory is realized by eight Data
SRAM and one Tag SRAM. The
512KB configuration uses eight
64KB x 8 SRAM, each of SRAM
fills the entire socket. The 256KB
configuration uses eight 32KB x 8
SRAM, note that each of the 32KB
x 8 SRAM do not fill the entire
socket, just leaving the top four pin
holes empty.
