Difference between revisions of "SPI Registers"
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m (Correct SPI_NEW_STATUS) |
(Update SPI_NEW_DONE) |
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|- | |- | ||
| style="background: green" | Yes | | style="background: green" | Yes | ||
| − | | | + | | [[#SPI_NEW_DONE|SPI_NEW_DONE]]0 |
| 0x10142804 | | 0x10142804 | ||
| 4 | | 4 | ||
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|- | |- | ||
| style="background: green" | Yes | | style="background: green" | Yes | ||
| − | | | + | | [[#SPI_NEW_DONE|SPI_NEW_DONE]]1 |
| 0x10143804 | | 0x10143804 | ||
| 4 | | 4 | ||
| Line 110: | Line 110: | ||
|- | |- | ||
| style="background: green" | Yes | | style="background: green" | Yes | ||
| − | | | + | | [[#SPI_NEW_DONE|SPI_NEW_DONE]]2 |
| 0x10160804 | | 0x10160804 | ||
| 4 | | 4 | ||
| Line 185: | Line 185: | ||
| Busy/enable | | Busy/enable | ||
|} | |} | ||
| + | |||
| + | == SPI_NEW_DONE == | ||
| + | When the transfer is finished, a 0 is written to this register. | ||
==SPI_NEW_BLKLEN== | ==SPI_NEW_BLKLEN== | ||
Revision as of 14:19, 25 March 2016
Registers
| Old3DS | Name | Address | Width | Used by |
|---|---|---|---|---|
| Yes | SPI_CNT0 | 0x10142000 | 2 | |
| Yes | SPI_DATA0 | 0x10142002 | 1 | |
| Yes | SPI_NEW_CNT0 | 0x10142800 | 4 | |
| Yes | SPI_NEW_DONE0 | 0x10142804 | 4 | |
| Yes | SPI_NEW_BLKLEN0 | 0x10142808 | 4 | |
| Yes | SPI_NEW_FIFO0 | 0x1014280C | 4 | |
| Yes | SPI_NEW_STATUS0 | 0x10142810 | 4 | |
| Yes | SPI_CNT1 | 0x10143000 | 2 | |
| Yes | SPI_DATA1 | 0x10143002 | 1 | |
| Yes | SPI_NEW_CNT1 | 0x10143800 | 4 | |
| Yes | SPI_NEW_DONE1 | 0x10143804 | 4 | |
| Yes | SPI_NEW_BLKLEN1 | 0x10143808 | 4 | |
| Yes | SPI_NEW_FIFO1 | 0x1014380C | 4 | |
| Yes | SPI_NEW_STATUS1 | 0x10143810 | 4 | |
| Yes | SPI_CNT2 | 0x10160000 | 2 | |
| Yes | SPI_DATA2 | 0x10160002 | 1 | |
| Yes | SPI_NEW_CNT2 | 0x10160800 | 4 | |
| Yes | SPI_NEW_DONE2 | 0x10160804 | 4 | |
| Yes | SPI_NEW_BLKLEN2 | 0x10160808 | 4 | |
| Yes | SPI_NEW_FIFO2 | 0x1016080C | 4 | |
| Yes | SPI_NEW_STATUS2 | 0x10160810 | 4 |
SPI_CNT
This is the old NDS/DSi SPI interface.
| Old3DS | Name |
|---|---|
| 0-1 | Baudrate (0=4MHz/Firmware, 1=2MHz/Touchscr, 2=1MHz/Powerman., 3=512KHz) |
| 2-6 | Not used (Zero) |
| 7 | Busy Flag (0=Ready, 1=Busy) (presumably Read-only) |
| 8-9 | Device Select (0-3) |
| 10 | Transfer Size (0=8bit/Normal, 1=16bit/Bugged) |
| 11 | Chipselect Hold (0=Deselect after transfer, 1=Keep selected) |
| 12-13 | Not used (Zero) |
| 14 | Interrupt Request (0=Disable, 1=Enable) |
| 15 | SPI Bus Enable (0=Disable, 1=Enable) |
SPI_NEW_CNT
This is an alternative faster interface introduced with the 3DS.
| Old3DS | Name |
|---|---|
| 6-7 | Device Select |
| 13 | Transfer Direction? (0=Incoming, 1=Outgoing) |
| 15 | Busy/enable |
SPI_NEW_DONE
When the transfer is finished, a 0 is written to this register.
SPI_NEW_BLKLEN
The number of bytes to be sent/read is written to this register.
SPI_NEW_FIFO
32-bit FIFO for reading/writing the SPI payload.
SPI_NEW_STATUS
Bit0: FIFO busy.