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Hi, TI experts,
1. TDA4 device DSP C660 aborted and opcode exception，show as follows:
IRP：0xAFBBAA84（IDLE Task）；NRP：0xAFBE0DE8（ti_sysbios_knl_Swi_restoreHwi__E）；IERR：0x8（opcode exception）
2. When using ROV Tool look more information, find the data of ti_sysbios_c64p_Exception_Module__state_V.exConText is error，show as fllows.
4. the exConText address is the HWI stack range（base：0xAFC298B8，size：64KB）, and the contech data is saved when expception handler.
3. So, we consulted TI experts about why the C660 opcode exception occurred and the exContext data was incorrect？Currently, we are unable to find any further information and require TI's assistance.
Hi,
1.
All core runing as follows:
(1). R5F2_0, connected to the surround and rear-view cameras;
(2). R5F2_1, connected to the radar;
(3). R5F3_0, connected to USS and parking control;
(4). R5F3_1, parking planning;
(5). R5F1_0, startup, and R5F1_1 is running Autosar CP connected to RTK and power management.
(6). C7X, parking and rear CNN
(7). C660, rear image preprocess and AVM color conversion, C661 run , RGB to YUV
(8). C661, parking image preprocessing
(9). A72, state machine, AVM, map, rear and pariking postprocess,etc
The device has three major states, as follows:
(1) Parking State:
C660 runs AVM color conversion and disables rear image preprocessing.
C661 runs parking image preprocessing.
C7X runs parking CNN and disables rear CNN.
(2) AVM State:
C660 runs AVM color conversion and disables rear image preprocessing.
C661 disables parking image preprocessing.
C7X disables parking CNN and disables rear CNN.
(3) Driving State:
C660 disables AVM color conversion and enables rear image preprocessing.
C661 disables parking image preprocessing.
C7X disables parking CNN and enables rear CNN.
2. Through the NRP register record, the instruction show as follows:"MV.L1 A11,A3 "
4. Supplement the following material information (NRP address, disassembly files and CCS viewed):
1. Exported memory of text segment when excaption occur; then after device rebooted, exported again, compared above text segment , not found any error.
2. Also，exported L2，L1P，found the NRP memroy，not found any error:
3. Through CCS, read L2EDSTAT of C660 and C661(both bit2 set, and closed)，as follows：
Hi, TI Experts, TDA4VM aboted again, show as follows:
1. Checked with CCS, found that C661 has crashed, with the crash caused by an Opcode Exception (IERR=0x8，NRP=0xB2E401C0).
2. When check the debice, the CCS connection is loose. Attempts to reconnect to C660 and C661 were unsuccessful, but connections to R5F2, C7, and other cores are success.
3. At this time, through R5F2_0, the memory of C661 was saved.
4. After the device was restarted and operating normally, multiple attempts to connect to C661 with CCS failed, and other cores could connect normally.
5. Under the condition of multiple device restarts and occasional connections to C661, but C660 not, the memory of C661 was loaded.
6. When comparing the memory before and after, discovered two code location are modified. However, they were found to be unrelated to the NRP（NRP=0xB2E401C0）.
A. address：0xB2F0A6F8，0xA1EF0c6E->0xA1EF3C6F
B. address：0xB2F0DBA0，0x00000000->0x1001E000
7. Upon retesting, when the normal device memory was modified to the above error value through CCS, the device run ok continuly.
8. When the device's debug board was swapped, found that CCS connections to other boards were normal, but the abnormal device, could not connect to C660 and C661, while other cores normal connectivity.
Hi, TI Experts, TDA4VM aboted again, show as follows:
1. Checked with CCS, found that C661 has crashed, with the crash caused by an Instruction Fetch Exception (IERR=0x1，NRP=0x0，B3=0xB2E40200).
2. When comparing the memory of exception and normal case，found both memory were same
A. when device exception，through CCS, saved the memory of C661
B. When device normall，through CCS, saved the memory of C661
3. The NRP=0x0 and B3=0xB2E40200, can‘t find why the PC address are changed to 0x0.
A. when B3=0xB2E40200， DSP may execute Function DMW_DSA_resourceGetEntryAttr
B. Function DMW_DSA_resourceGetEntryAttr are simple code, don't exist instrction jump
Update the latest information:
The issue not reproduced until now after increasing the VDD_CORE voltage from 0.80 to 0.84.
