I2C Registers: Difference between revisions
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= Registers = | |||
{| class="wikitable" border="1" | {| class="wikitable" border="1" | ||
! | ! Old3DS | ||
! | ! Name | ||
! | ! Address | ||
! | ! Width | ||
! Used by | |||
|- | |- | ||
| | | style="background: green" | Yes | ||
| I2C1_DATA | |||
| 0x10161000 | | 0x10161000 | ||
| 1 | | 1 | ||
| | |||
|- | |- | ||
| | | style="background: green" | Yes | ||
| [[#I2C_CNT|I2C1_CNT]] | |||
| 0x10161001 | | 0x10161001 | ||
| 1 | | 1 | ||
| | |||
|- | |- | ||
| | | style="background: green" | Yes | ||
| I2C1_CNTEX | |||
| 0x10161002 | | 0x10161002 | ||
| 2 | | 2 | ||
| | |||
|- | |- | ||
| | | style="background: green" | Yes | ||
| I2C1_SCL | |||
| 0x10161004 | | 0x10161004 | ||
| 2 | | 2 | ||
| | |||
|- | |- | ||
| | | style="background: green" | Yes | ||
| I2C2_DATA | |||
| 0x10144000 | | 0x10144000 | ||
| 1 | | 1 | ||
| | |||
|- | |- | ||
| | | style="background: green" | Yes | ||
| [[#I2C_CNT|I2C2_CNT]] | |||
| 0x10144001 | | 0x10144001 | ||
| 1 | | 1 | ||
| | |||
|- | |- | ||
| | | style="background: green" | Yes | ||
| I2C2_CNTEX | |||
| 0x10144002 | | 0x10144002 | ||
| 2 | | 2 | ||
| | |||
|- | |- | ||
| | | style="background: green" | Yes | ||
| I2C2_SCL | |||
| 0x10144004 | | 0x10144004 | ||
| 2 | | 2 | ||
| | |||
|- | |- | ||
| | | style="background: green" | Yes | ||
| I2C3_DATA | |||
| 0x10148000 | | 0x10148000 | ||
| 1 | | 1 | ||
| | |||
|- | |- | ||
| | | style="background: green" | Yes | ||
| [[#I2C_CNT|I2C3_CNT]] | |||
| 0x10148001 | | 0x10148001 | ||
| 1 | | 1 | ||
| | |||
|- | |- | ||
| | | style="background: green" | Yes | ||
| I2C3_CNTEX | |||
| 0x10148002 | | 0x10148002 | ||
| 2 | | 2 | ||
| | |||
|- | |- | ||
| | | style="background: green" | Yes | ||
| I2C3_SCL | |||
| 0x10148004 | | 0x10148004 | ||
| 2 | | 2 | ||
| | |||
|} | |||
== I2C_CNT == | |||
{| class="wikitable" border="1" | |||
! BIT | |||
! DESCRIPTION | |||
|- | |||
| 0 | |||
| Stop (0=No, 1=Stop/last byte) | |||
|- | |||
| 1 | |||
| Start (0=No, 1=Start/first byte) | |||
|- | |||
| 2 | |||
| Pause (0=Transfer Data, 1=Pause after Error, used with/after Stop) | |||
|- | |||
| 4 | |||
| Ack Flag (0=Error, 1=Okay) (For DataRead: W, for DataWrite: R) | |||
|- | |||
| 5 | |||
| Data Direction (0=Write, 1=Read) | |||
|- | |||
| 6 | |||
| Interrupt Enable (0=Disable, 1=Enable) | |||
|- | |||
| 7 | |||
| Start/busy (0=Ready, 1=Start/busy) | |||
|} | |} | ||
= I2C Devices = | |||
{| class="wikitable" border="1" | {| class="wikitable" border="1" | ||
! Device id | ! Device id | ||
| Line 407: | Line 447: | ||
See the datasheet linked to on the [[Hardware]] page for reference. From that datasheet, for the structure of the I2C register address u8: "Bit 0 is not used, bits 2:1 select the channel, bits 6:3 select one of the UART internal registers. Bit 7 is not used with the I2C-bus interface, but it is used by the SPI interface to indicate a read or a write operation." | See the datasheet linked to on the [[Hardware]] page for reference. From that datasheet, for the structure of the I2C register address u8: "Bit 0 is not used, bits 2:1 select the channel, bits 6:3 select one of the UART internal registers. Bit 7 is not used with the I2C-bus interface, but it is used by the SPI interface to indicate a read or a write operation." | ||