Epson ARM.POWERED ARM720T - Manual (Page 195)

11: Test Support
ARM720T CORE CPU MANUAL EPSON 11-11
In Figure 11-13, AP[3:0] determines the setting of the access permission bits for a memory
region. The allowed values are shown in Table 11-8.
Figure 11-14 shows the data format for RAM1 reads.
Figure 11-14 Data format, RAM1 read
In Figure 11-14, bits [24:22] are only valid for a match operation. In this case the values shown
in Table 11-9 apply.
Figure 11-15 shows the Rd format for RAM2 writes, and the data format for RAM2 reads.
Figure 11-15 Rd format, RAM2 write and data format, RAM2 read
Table 11-8 Access permission bit setting
AP[3:0] Access permission bits
b1000 b11
b0100 b10
b0010 b01
b0001 b00
Table 11-9 Miss and fault encoding
Prot fault Domain fault TLB miss Function
0 0 0 Hit, OK
0 1 0 Hit, domain fault
1 0 0 Hit, protection fault
1 1 0 Hit, protection and domain fault
- - 1 TLB miss
31 6 5 4 0
SBZ
3
AP DOMAIN (one hot encoding)
D15
22 21
D0
nC
nB
25 24 23
TLB miss
Domain fault
Prot fault
31 25 24 00
FCSE PID UNP/SBZ