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I2C Registers (edit)

Revision as of 02:10, 20 March 2015

461 bytes added ,  02:10, 20 March 2015
no edit summary
Line 1: Line 1: −
== Registers ==
+
= Registers =
 
{| class="wikitable" border="1"
 
{| class="wikitable" border="1"
−
!  NAME
+
!  Old3DS
−
!  PHYSICAL ADDRESS
+
!  Name
−
!  PROCESS ADDRESS
+
!  Address
−
!  WIDTH
+
!  Width
 +
!  Used by
 
|-
 
|-
−
| REG_I2C1DATA
+
| style="background: green" | Yes
 +
| I2C1_DATA
 
| 0x10161000
 
| 0x10161000
−
| 0x1EC61000
   
| 1
 
| 1
 +
|
 
|-
 
|-
−
| REG_I2C1CNT
+
| style="background: green" | Yes
 +
| [[#I2C_CNT|I2C1_CNT]]
 
| 0x10161001
 
| 0x10161001
−
| 0x1EC61001
   
| 1
 
| 1
 +
|
 
|-
 
|-
−
| REG_I2C1CNTEX
+
| style="background: green" | Yes
 +
| I2C1_CNTEX
 
| 0x10161002
 
| 0x10161002
−
| 0x1EC61002
   
| 2
 
| 2
 +
|
 
|-
 
|-
−
| REG_I2C1SCL
+
| style="background: green" | Yes
 +
| I2C1_SCL
 
| 0x10161004
 
| 0x10161004
−
| 0x1EC61004
   
| 2
 
| 2
 +
|
 
|-
 
|-
−
| REG_I2C2DATA
+
| style="background: green" | Yes
 +
| I2C2_DATA
 
| 0x10144000
 
| 0x10144000
−
| 0x1EC44000
   
| 1
 
| 1
 +
|
 
|-
 
|-
−
| REG_I2C2CNT
+
| style="background: green" | Yes
 +
| [[#I2C_CNT|I2C2_CNT]]
 
| 0x10144001
 
| 0x10144001
−
| 0x1EC44001
   
| 1
 
| 1
 +
|
 
|-
 
|-
−
| REG_I2C2CNTEX
+
| style="background: green" | Yes
 +
| I2C2_CNTEX
 
| 0x10144002
 
| 0x10144002
−
| 0x1EC44002
   
| 2
 
| 2
 +
|
 
|-
 
|-
−
| REG_I2C2SCL
+
| style="background: green" | Yes
 +
| I2C2_SCL
 
| 0x10144004
 
| 0x10144004
−
| 0x1EC44004
   
| 2
 
| 2
 +
|
 
|-
 
|-
−
| REG_I2C3DATA
+
| style="background: green" | Yes
 +
| I2C3_DATA
 
| 0x10148000
 
| 0x10148000
−
| 0x1EC48000
   
| 1
 
| 1
 +
|
 
|-
 
|-
−
| REG_I2C3CNT
+
| style="background: green" | Yes
 +
| [[#I2C_CNT|I2C3_CNT]]
 
| 0x10148001
 
| 0x10148001
−
| 0x1EC48001
   
| 1
 
| 1
 +
|
 
|-
 
|-
−
| REG_I2C3CNTEX
+
| style="background: green" | Yes
 +
| I2C3_CNTEX
 
| 0x10148002
 
| 0x10148002
−
| 0x1EC48002
   
| 2
 
| 2
 +
|
 
|-
 
|-
−
| REG_I2C3SCL
+
| style="background: green" | Yes
 +
| I2C3_SCL
 
| 0x10148004
 
| 0x10148004
−
| 0x1EC48004
   
| 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 ==
+
= 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."
−
  −
= I2CCNT =
  −
{| class="wikitable" border="1"
  −
|+ REG_I2CxCNT
  −
!  BIT
  −
!  DESCRIPTION
  −
|-
  −
| 0
  −
| HOLD (0=Last byte of transaction, 1=More bytes coming)
  −
|-
  −
| 2
  −
| Error flag/ack?
  −
|-
  −
| 4
  −
| Read mode related?
  −
|-
  −
| 5
  −
| Read mode?
  −
|-
  −
| 6
  −
| IRQ enable?
  −
|-
  −
| 7
  −
| Enable?
  −
|}
 
Retrieved from "https://www.3dbrew.org/wiki/Special:MobileDiff/11983"