31.6.26 Flash ECC Fault Syndrome REGISTER
| Symbol | Description | Symbol | Description | Symbol | Description |
|---|---|---|---|---|---|
| R | Readable bit | HC | Cleared by Hardware | (Grey cell) | Unimplemented |
| W | Writable bit | HS | Set by Hardware | X | Bit is unknown at Reset |
| K | Write to clear | S | Software settable bit | — | — |
| Name: | FFLTSYN |
| Offset: | 0x64 |
| Reset: | 0x00000000 |
| Property: | R |
| Bit | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | |
| PERR[3:0] | CTLSTAT[2:0] | ||||||||
| Access | R/HS/HC | R/HS/HC | R/HS/HC | R/HS/HC | R/HS/HC | R/HS/HC | R/HS/HC | ||
| Reset | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||
| Bit | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | |
| CERR | DSERR[1:0] | ||||||||
| Access | R/HS/HC | R/HS/HC | R/HS/HC | ||||||
| Reset | 0 | 0 | 0 | ||||||
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
| DEDSYN | SECSYN[8] | ||||||||
| Access | R/HS/HC | R/HS/HC | |||||||
| Reset | 0 | 0 |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| SECSYN[7:0] | |||||||||
| Access | R/HS/HC | R/HS/HC | R/HS/HC | R/HS/HC | R/HS/HC | R/HS/HC | R/HS/HC | R/HS/HC | |
| Reset | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
Bits 31:28 – PERR[3:0] Note: Word size is defined by the Write Word size of the flash, either 32-bits or 64-bits.
| Value | Name | Description |
|---|---|---|
| 1 | ERROR | Parity Error on Word n |
| 0 | NONE | No Parity Error on Word n |
Bits 26:24 – CTLSTAT[2:0] Note: Panel is always programmed with 000 for ECC and 111 for parity.
Note: Panel is always programmed with
000 for ECC and 111 for parity.
000,001,010,100 = Calculation used ECC (i.e. programming used quad write)
011,101,110,111 = Calculation used Parity (i.e. programming used single write)
| Value | Name | Description |
|---|---|---|
| 0 | USEDECC_0 | Calculation used ECC (i.e. programming used quad write) |
| 1 | USEDECC_1 | Calculation used ECC (i.e. programming used quad write) |
| 2 | USEDECC_10 | Calculation used ECC (i.e. programming used quad write) |
| 4 | USEDECC_100 | Calculation used ECC (i.e. programming used quad write) |
| 3 | USEDPARITY_11 | Calculation used Parity (i.e. programming used single write) |
| 5 | USEDPARITY_101 | Calculation used Parity (i.e. programming used single write) |
| 6 | USEDPARITY_110 | Calculation used Parity (i.e. programming used single write) |
| 7 | USEDPARITY_111 | Calculation used Parity (i.e. programming used single write) |
Bit 18 – CERR ECC Control bit Error
| Value | Name | Description |
|---|---|---|
| 1 | SINGLE | Single Control Bit Error |
| 0 | NONE | No Control bit Error (ECCSTAT either 111 or 000) |
Bits 17:16 – DSERR[1:0] Evaluates as [DERR,SERR] For Reads only when ECCSTAT = ECC
For Reads only when ECCSTAT = ECC
| Value | Name | Description |
|---|---|---|
| 0 | NONE | No Errors |
| 1 | SINGLE | Single Error Corrected |
| 2 | DOUBLE_10 | Double Error Detected |
| 3 | DOUBLE_11 | Double Error Detected |
Bit 15 – DEDSYN This is Overall Parity Calculated from Data and all Parity bits read from flash.
This is Overall Parity Calculated from Data and all Parity bits read from Flash.
| Value | Name | Description |
|---|---|---|
| 1 | Calculated Overall Parity Differs from Read Overall Parity | |
| 0 | Calculated Overall Parity Concurs with Read Overall Parity |
Bits 8:0 – SECSYN[8:0] For Reads only when CTLSTAT = ECC or System bits ECCCTL[1:0]=ECC This value is the bitwise XOR of SECIN and SECOUT. When FFLTSYN.DEDSYN==1: 000000000 = No Data Error, but DED bit in Error Others = SECSYN[] points to the bit position in the calculation vector that was corrected When FFLTSYN.DEDSYN==0: 000000000 = No Data Error and No DED bit Error Others = Double Error Detected. Note: The number of active bits is dependent on the data width of the flash panel.
For Reads only when CTLSTAT = ECC or System bits ECCCTL[1:0]=ECC
This value is the bitwise XOR of SECIN and SECOUT.
If DEDSYN=1:
000000000 = No Data Error, but DED bit in Error
Non-Zero = SECSYN points to the bit position in the calculation vector that was corrected
If DEDSYN = 0:
000000000 = No Data Error or DED bit Error
Non-Zero = Double Error Detected.