I2S Registers: Difference between revisions
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|- | |- | ||
| style="background: green" | Yes | | style="background: green" | Yes | ||
| [[# | | [[#I2S1_CNT|I2S1_CNT]] | ||
| 0x10145000 | | 0x10145000 | ||
| 2 | | 2 | ||
| | | Codec sysmodule, AgbBg, TwlBg | ||
|- | |- | ||
| style="background: green" | Yes | | style="background: green" | Yes | ||
| [[# | | [[#I2S2_CNT|I2S2_CNT]] | ||
| 0x10145002 | | 0x10145002 | ||
| 2 | | 2 | ||
| | | Codec sysmodule, AgbBg, TwlBg | ||
|} | |} | ||
== | |||
==I2S1_CNT== | |||
{| class="wikitable" border="1" | {| class="wikitable" border="1" | ||
! Bit | ! Bit | ||
| Line 26: | 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 | ||
| Enable (0=Disabled, 1=Enabled) | | Enable (0=Disabled, 1=Enabled) | ||
|} | |} | ||
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. | ||
== | ==I2S2_CNT== | ||
{| class="wikitable" border="1" | {| class="wikitable" border="1" | ||
! Bit | ! Bit | ||
! 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 | ||
| Enable (0=Disabled, 1=Enabled) | | Enable (0=Disabled, 1=Enabled) | ||
|} | |} | ||
This I2S line is used by CSND. | |||
Usually set to 0xE000. | Usually set to 0xE000. | ||