SDIF Registers
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MMIO Interfaces
| Name | Physical Address |
|---|---|
| SceSdif0 (MMC) | 0xE0B00000 |
| SceSdif1 (SD/GC) | 0xE0C00000 |
| SceSdif2 (Wlan/Bt) | 0xE0C10000 |
| SceSdif3 (UNK) | 0xE0C20000 |
Registers
| Offset | Size | Name | Comment |
|---|---|---|---|
| 0x00 | 0x4 | SDMA System Address / Argument 2 | |
| 0x04 | 0x2 | Block Size | |
| 0x06 | 0x2 | Block Count | |
| 0x08 | 0x4 | Argument 1 | |
| 0x0C | 0x2 | Transfer Mode | Bootrom is seen to use Reserved bits |
| 0x0E | 0x2 | Command | |
| 0x10 | 0x2 | Response0 | |
| 0x12 | 0x2 | Response1 | |
| 0x14 | 0x2 | Response2 | |
| 0x16 | 0x2 | Response3 | |
| 0x18 | 0x2 | Response4 | |
| 0x1A | 0x2 | Response5 | |
| 0x1C | 0x2 | Response6 | |
| 0x1E | 0x2 | Response7 | |
| 0x20 | 0x4 | Buffer Data Port | |
| 0x24 | 0x4 | Present State | |
| 0x28 | 0x1 | Host Control 1 | |
| 0x29 | 0x1 | Power Control | |
| 0x2A | 0x1 | Block Gap Control | |
| 0x2B | 0x1 | Wakeup Control | |
| 0x2C | 0x2 | Clock Control | |
| 0x2E | 0x1 | Timeout Control | |
| 0x2F | 0x1 | Software Reset | |
| 0x30 | 0x2 | Normal Interrupt Status | |
| 0x32 | 0x2 | Error Interrupt Status | |
| 0x34 | 0x2 | Normal Interrupt Status Enable | |
| 0x36 | 0x2 | Error Interrupt Status Enable | |
| 0x38 | 0x2 | Normal Interrupt Signal Enable | |
| 0x3A | 0x2 | Error Interrupt Signal Enable | |
| 0x3C | 0x2 | Auto CMD Error Status | |
| 0x3E | 0x2 | Host Control 2 | |
| 0x40 | 0x8 | Capabilities | |
| 0x48 | 0x8 | Maximum Current Capabilities | |
| 0x50 | 0x2 | Force Event for Auto CMD Error Status | |
| 0x52 | 0x2 | Force Event for Error Interrupt Status | |
| 0x54 | 0x1 | ADMA Error Status | |
| 0x55 | 0x3 | UNUSED | |
| 0x58 | 0x8 | ADMA System Address | |
| 0x60 | 0x2 | Preset Value for Initialization | |
| 0x62 | 0x2 | Preset Value for Default Speed | |
| 0x64 | 0x2 | Preset Value for High Speed | |
| 0x66 | 0x2 | Preset Value for SDR12 | |
| 0x68 | 0x2 | Preset Value for SDR25 | |
| 0x6A | 0x2 | Preset Value for SDR50 | |
| 0x6C | 0x2 | Preset Value for SDR104 | |
| 0x6E | 0x2 | Preset Value for DDR50 | |
| 0x70 | 0x70 | UNUSED | |
| 0xE0 | 0x4 | Shared Bus Control | |
| 0xE4 | 0x18 | UNUSED | |
| 0xFC | 0x2 | Slot Interrupt Status | |
| 0xFE | 0x2 | Host Controller Version | Reads as 0x8901 (SDHCI Spec 2.0, vendor 0x89) on a PSTV.
|
Notes
All registers are the same as defined in the SD Specifications Part A2: https://www.ercankoclar.com/wp-content/uploads/2017/11/SD-Specifications-Part-A2-SD-Host-Controller-Simplified-Specification.pdf
Note that the register interface is mirrored every 0x100 bytes in the allocated address space window of each controller.