16.20.3 NFC Status Register
| Name: | HSMC_SR |
| Offset: | 0x008 |
| Reset: | 0x00000000 |
| Property: | Read-only |
| Bit | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | |
| | | | | | | | | RB_EDGE0 | |
| Access | | | | | | | | R | |
| Reset | | | | | | | | 0 | |
| Bit | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | |
| | NFCASE | AWB | UNDEF | DTOE | | | CMDDONE | XFRDONE | |
| Access | R | R | R | R | | | R | R | |
| Reset | 0 | 0 | 0 | 0 | | | 0 | 0 | |
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
| | | NFCSID[2:0] | NFCWR | | | NFCBUSY | |
| Access | | R | R | R | R | | | R | |
| Reset | | 0 | 0 | 0 | 0 | | | 0 | |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| | | | RB_FALL | RB_RISE | | | | SMCSTS | |
| Access | | | R | R | | | | R | |
| Reset | | | 0 | 0 | | | | 0 | |
Bit 24 – RB_EDGE0 Ready/Busy Line 0
Edge Detected
If set to one, this
flag indicates that an edge has been detected on the Ready/Busy Line 0. Depending on
HSMC_CFG.EDGECTRL, only the rising or the falling edge is detected. This flag is
reset after a Status Read operation.
Bit 23 – NFCASE NFC Access Size Error
If set to one, this
flag indicates that an illegal access has been detected in the NFC Memory Area. Only
Word access is allowed within the NFC memory area. This flag is reset after a Status
Read operation.
Bit 22 – AWB Accessing While Busy
If set to one, this
flag indicates that an AHB host has performed an access during the busy phase. This
flag is reset after a Status Read operation.
Bit 21 – UNDEF Undefined Area Error
When set to one,
this flag indicates that the processor performed an access in an undefined memory
area. This flag is reset after a Status Read operation.
Bit 20 – DTOE Data Timeout Error
When set to one,
this flag indicates that the data timeout set by DTOMUL and DTOCYC has been
exceeded. This flag is reset after a Status Read operation.
Bit 17 – CMDDONE Command Done
When set to one,
this flag indicates that the NFC has terminated the command. This flag is reset
after a Status Read operation.
Bit 16 – XFRDONE NFC Data Transfer Terminated
When set to one,
this flag indicates that the NFC has terminated the data transfer. This flag is
reset after a Status Read operation.
Bits 14:12 – NFCSID[2:0] NFC Chip Select ID (this field cannot be
reset)
When a command is issued, this field indicates the value of the
targeted chip select.
Bit 11 – NFCWR NFC Write/Read Operation (this field cannot be
reset)
When a command is
issued, this field indicates the current Read or Write
operation.
Bit 8 – NFCBUSY NFC Busy (this field cannot be reset)
When set to one,
this flag indicates that the controller is activated and accesses the memory
device.
Bit 5 – RB_FALL Selected Ready Busy Falling Edge
Detected
When set to one,
this flag indicates that a falling edge on the Ready/Busy Line has been detected.
This flag is reset after a Status Read operation. The Ready/Busy line is selected
through the decoding of field HSMC_SR.NFCSID.
Bit 4 – RB_RISE Selected Ready Busy Rising Edge
Detected
When set to one,
this flag indicates that a rising edge on the Ready/Busy Line has been detected.
This flag is reset after a Status Read operation. The Ready/Busy line is selected
through the decoding of field HSMC_SR.NFCSID.
Bit 0 – SMCSTS NAND Flash
Controller Status (this field cannot be reset)
| Value | Description |
|---|
| 0 |
The
NAND Flash controller is disabled. |
| 1 |
The
NAND Flash controller is enabled. |
