UART Registers: Difference between revisions
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| Line 29: | Line 29: | ||
| 4 | | 4 | ||
| [[#Device status|Device status]] | | [[#Device status|Device status]] | ||
|- | |||
| 0x54 | |||
| 4 | |||
| A <code>0x77F</code> is written here after reading from the FIFO | |||
|- | |- | ||
| 0x68 | | 0x68 | ||
Revision as of 08:13, 14 June 2017
MMIO Interfaces
| Name | Physical address | Size |
|---|---|---|
| SceUartReg | 0xE2030000 | 0x70000 |
| SceUartClkgenReg | 0xE3105000 | 0x1000 |
It looks like there are 7 UART devices/ports. The i-th device has its base registers address at SceUartReg + i * 0x10000.
The clock generator configuration for each of these devices is at SceUartClkgenReg + i * 4.
SceUartReg registers
| Offset | Size | Description |
|---|---|---|
| 0x28 | 4 | Device status |
| 0x54 | 4 | A 0x77F is written here after reading from the FIFO
|
| 0x68 | 4 | Read FIFO data available |
| 0x70 | 4 | Write FIFO |
| 0x78 | 4 | Read FIFO |
Device status
| Bit(s) | Description |
|---|---|
| 8 | Write FIFO not full (0 = full) |
| 9 | Device ready (0 = busy) |
Read FIFO data available
| Bit(s) | Description |
|---|---|
| 0-5 | Number of words available to read |
| 6-31 | Unused |
SceUartClkgenReg registers
| Offset | Size | Description |
|---|---|---|
| 0x00 | 4 | Clock generator for device 0 |
| 0x04 | 4 | Clock generator for device 1 |
| 0x08 | 4 | Clock generator for device 2 |
| 0x0C | 4 | Clock generator for device 3 |
| 0x10 | 4 | Clock generator for device 4 |
| 0x14 | 4 | Clock generator for device 5 |
| 0x18 | 4 | Clock generator for device 6 |