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IONIAN-SSGA Registers Test
This test is performed by all the processors and it checks the accessibility from the
processor to the IONIAN and SSGA chips. Following hardware parts are checked.
1. DCB ASIC
2. IONIAN ASIC
3. SSGA ASIC.
The following sub-tests are included under the IONIAN-SSGA Registers Test:
IONIAN Registers Test This test operates on the DSC register, CONFIG register,
SSGA POS Register Test
SSGA Interrupt Register Test
Initial Values Test
NVRAM Access and SSBus Access Test
This test is performed by all the processors and is meant to check the accessibility of the SS
Bus from the processor, using NVRAM. This test doesn't check the NVRAM memory cells.
Memory cells are checked by the BUMP directly. The following hardware parts are checked
by this test:
1. DCB ASIC
2. IONIAN ASIC
3. SSGA ASIC
4. SS-Bus
5. NVRAM Decoding, addressing and reading.
This test has the following sub-tests. All the areas which are accessed, are saved at the
beginning and restored at the end.
NVRAM Data Lines Access Test
Walking 1 Address Test
Walking 0 Address Test
Personalization register, Bus_Status register. Specific values are
written and read. Values are saved and restored in all the
operations.
This test tries to read specific values from each of the POS
registers. For POS 2 and POS 3 write operation is also conducted.
This test writes and reads specific values from each of the interrupt
registers. The values are then compared. Values are saved and
restored in all the operations. The following registers are operated
upon:
1. XVIR (BUC #0) register
2. XVIR (BUC #1) register
3. DSIER register
4. MFRR register
5. BUID register
6. APR register.
This test checks the initial values of the IONIAN and SSGA ASICs.
It is only run at PON time.
This test writes and reads four specific words in the working area.
Written values are compared with the read values.
This test is used to find the address lines which are at level 0;
address lines which are stuck to other address or data lines.
This test detects the address lines which are cut.
SystemGuard Test Groups
A-9
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