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Rev. 5.00, 09/03, page 63 of 760
3.3 TLB Functions
3.3.1 Configuration of the TLB
The TLB caches address translation table information located in the external memory. The address
translation table stores the physical page number translated from the virtual page number and the
control information for the page, which is the unit of address translation. Figure 3.4 shows the
overall TLB configuration. The TLB is 4-way set associative with 128 entries. There are 32 entries
for each way. Figure 3.5 shows the configuration of virtual addresses and TLB entries.
Entry 1
Address array Data array
Entry 0
Entry 1
Entry 31
Ways 0−3Ways 0−3
VPN(11
−
10)VPN(31
−
17) ASID(7
−
0)
V Entry 0
Entry 31
PPN(28
−
10) PR(1
−
0)
SZ C D SH
Figure 3.4 Overall Configuration of the TLB