I2S Registers: Difference between revisions
m TuxSH moved page CODEC Registers to I2S Registers: CODEC is more than just sound output |
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| Line 27: | Line 27: | ||
|- | |- | ||
| 0-5 | | 0-5 | ||
| DSP volume (doesn't affect csnd) | | DSP volume (doesn't affect csnd). | ||
|- | |- | ||
| 6-11 | | 6-11 | ||
| | | GBA hardware master volume. And DSi too? | ||
|- | |- | ||
| 12 | | 12 | ||
| ? | | Unknown purpose. Maybe direction for microphone input? | ||
|- | |- | ||
| 13-14 | | 13 | ||
| | | I2S frequency. 0=32.728498046875 kHz, 1=47.605088068181818181818 kHz. | ||
|- | |||
| 14 | |||
| First MCLK output. 0=8.3784955 MHz, 1=16.756991 MHz. | |||
|- | |- | ||
| 15 | | 15 | ||
| Line 42: | Line 45: | ||
|} | |} | ||
This I2S line is used the DSP and microphone. | This I2S line is used the DSP, GBA hardware and microphone. | ||
This is usually set to 0xC800 or 0xC820 when the DSP is active. | This is usually set to 0xC800 or 0xC820 when the DSP is active. | ||
| Line 52: | Line 55: | ||
! Description | ! Description | ||
|- | |- | ||
| 13-14 | | 0-12 | ||
| | | Unused (0). | ||
|- | |||
| 13 | |||
| I2S frequency. 0=32.728498046875 kHz, 1=47.605088068181818181818 kHz. | |||
|- | |||
| 14 | |||
| Second MCLK output. Connected to the CODEC chip. 0=8.3784955 MHz, 1=16.756991 MHz. | |||
|- | |- | ||
| 15 | | 15 | ||