User`s guide

Table 2–1 (Cont.) Jumper Position Descriptions
Select Bit
Register Bit
Name Function
sp_bit<5:3> BC_SPEED<2:0> L2 cache speed selection is shown here.
BC_SPEED
<2> <1> <0>
J3-21 J3-19 J3-17 L2 Cache Period
In
1
In In Reserved
In In Out
2
6ns
In Out In 8 ns
In Out Out 10 ns
Out In In 12 ns (default)
Out In Out 15 ns
Out Out In Reserved
Out Out Out Reserved
sp_bit<2:0> BC_SIZE<2:0> L2 cache size selection is shown here.
BC_SIZE
<2> <1> <0>
J3-15 J3-13 J3-11 L2 Cache Size
In
1
In In Disables L2 cache
In In Out
2
512KB
In Out In 1MB
In Out Out 2MB (default)
Out In In 4MB
Out In Out 8MB
Out Out In Reserved
Out Out Out Reserved
1
Jumper in (logical 0)
2
Jumper out (logical 1)
2–4 System Jumpers and Connectors