Rainbow Electronics W90P710CDG - Manual (Page 96)

W90P710CD/W90P710CDG
- 96 -
Cache Test Register 1 (CTEST1)
Cache Test Register that will be read back to provide the status of cache RAM BIST. Whether the BIST
is finish and all of bank of SRAM are tested successfully will be presented in this register.
Register Address R/W Description Reset Value
CTEST1 0xFFF6_0004 R Cache test register 1 0x0000_0000
31 30 29 28 27 26 25 24
FINISH RESERVED
23 22 21 20 19 18 17 16
RESERVED
15 14 13 12 11 10 9 8
RESERVED
7 6 5 4 3 2 1 0
BFAIL7 BFAIL6 BFAIL5 BFAIL4 BFAIL3 BFAIL2 BFAIL1 BFAIL0
BITS DESCRIPTION
[31] FINISH
BIST completed
This bit is “0” initially. When BIST mode enabled, this bit will be “1”
after BIST test completed. The values of BFAIL0-7 are valid only
after FINISH = 1.
[30:8] RESERVED -
[7] BFAIL7
BIST test fail for data cache tag ram way 1
If this bit equals to “1”, it indicates the data cache tag ram for way
1 is tested fail by BIST. “0” means the test is passed.
[6] BFAIL6
BIST test fail for data cache tag ram way 0
If this bit equals to “1”, it indicates the data cache tag ram for way
0 is tested fail by BIST. “0” means the test is passed.
[5] BFAIL5
BIST test fail for instruction cache tag ram way 1
If this bit equals to “1”, it indicates the instruction cache tag ram for
way 1 is tested fail by BIST. “0” means the test is passed.
[4] BFAIL4
BIST test fail for instruction cache tag ram way 0
If this bit equals to “1”, it indicates the instruction cache tag ram for
way 0 is tested fail by BIST. “0” means the test is passed.
[3] BFAIL3
BIST test fail for data cache ram way 1
If this bit equals to “1”, it indicates the data cache ram for way 1 is
tested fail by BIST. “0” means the test is passed.