I2C _IRQ
i
I2C _FCLK
i
I2C _ICLK
i
I2C _RESET
i
I2C-021
Device
MPU
INTC
L4-Core interconnect
PRCM
sDMA
controller
i2c _scl
i
i2c _sda
i
i2c _sccbe
i
I2C
i
I
C and SCCB interface
2
FIFOs
Master/slave
control
Internal interface
Registers
Test
control
Clock/reset
control
I2C _DMA_TX
i
I2C _DMA_RX
i
I2C _SWAKEUP
i
Public Version
HS I
2
C Functional Description
www.ti.com
17.4 HS I
2
C Functional Description
17.4.1 HS I
2
C Block Diagram
is a functional block diagram of the HS I
2
C controllers.
Figure 17-21. HS I
2
C Controllers Functional Block Diagram
NOTE:
The i2c1_sccbe and i2c4_sccbe signal is not available. The i2c4 does not have SWAKEUP
request. It also gets its RESET signal from the PRCM reset manager.
The three HS I
2
C controllers can be configured in F/S I
2
C mode, in HS I
2
C mode, or in SCCB mode. The
operation mode is selected by configuring the I2Ci.
[13:12] OPMODE bit field.
lists
the available operation modes.
Table 17-10. HS I
2
C Operation Mode Selection
Operation Mode
I2Ci.
[13:12] OPMODE Bit Field Value
F/S I
2
C
0x0
HS I
2
C
0x1
SCCB
0x2
Reserved (not used)
0x3
17.4.2 HS I
2
C Transmit Mode in I
2
C Mode
This mode is available for master or slave. The master and slave modes are configurable with the
I2Ci.
[10] MST bit (0: slave mode; 1: master mode).
In master mode, the transmit mode is configured by setting the I2Ci.
[9] TRX bit to 1. The MPU
subsystem puts the data to transmit in the TX FIFO by writing to the I2Ci.
[7:0] DATA bit field.
The transmitter can write new data to this register when the I2Ci.
[4] XRDY bit is set to 1, or
when the I2Ci.
[14] XDR bit is set to 1 according to the draining mechanism description.
2790
SWPU177N – December 2009 – Revised November 2010
Multimaster High-Speed I
2
C Controller
Copyright © 2009–2010, Texas Instruments Incorporated
Содержание OMAP36 Series
Страница 174: ...174 List of Tables SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 692: ...692 MPU Subsystem SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 1084: ...1084 IVA2 2 Subsystem SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 1990: ...1990 2D 3D Graphics Accelerator SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 2334: ...2334 Memory Subsystem SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 2700: ...2700 Memory Management Units SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 2868: ...2868 HDQ 1 Wire SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 2974: ...2974 UART IrDA CIR SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 3054: ...3054 Multichannel SPI SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 3462: ...3462 MMC SD SDIO Card Interface SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 3508: ...3508 General Purpose Interface SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 3584: ...3584 Initialization SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 3648: ...3648 Debug and Emulation SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...