I2C Interface; I2C3 Vs Dcan2 Multiplexing; I2C2 Vs Hdmi Selection Table; I2C3 Vs Dcan2 Selection Table - Texas Instruments DRA7 Series User Manual

Hardware
The default interface is I2C2 interface and the I2C2 Vs HDMI selection table is shown in
I2C2 vs HDMI
I2C2and HDMI
Use McASP2_ACLKR (ball E15) to control signal "SEL_HDMI_I2C2".
3.4.12 I2C3 vs DCAN2
Multiplex control logic for I2C3 and DCAN.
The default interface is I2C3 interface and the I2C3 vs DCAN2 selection table is shown in
I2C3 vs DCAN2
I2C3 and DCAN2
Use bit "P3" in I2C IO Expander (U57) with slave address 0x0100 0010(Write) to control, signal
"SEL_I2C3_CAN2".
3.5

I2C Interface

Table 24 shows the list of I2C interface available with the list of devices connected in each I2C interface
and its corresponding device address.
CPU Board
EEPROM
Digital Temperature Sensor
Digital Temperature Sensor
GPIO Expander
GPIO Expander
MLB Connector
LCD Interface
22
DRA7x EVM CPU Board
Table 22. I2C2 vs HDMI Selection Table
SEL_HDMI_I2C2
1
0
Figure 17. I2C3 vs DCAN2 Multiplexing
Table 23. I2C3 vs DCAN2 Selection Table
SEL_I2C3_CAN2
1
0
Table 24. I2C Device Address Chart
Part No
24WC256
TMP102AIDRLT
TMP102AIDRLT
PCF8575
PCF8575
Connector
Connector
Copyright © 2016, Texas Instruments Incorporated
Interface
HDMI
I2C2
Interface
DCAN2
I2C3
Ref. Des I2C1 I2C2
U105 X
U117 X
U109 X
U58 X
U57 X
P8 X
J15 X
www.ti.com
Table 22.
Device
HDMI DDC and Signals
GPIO Expander, FPD-Link, LI
Camera, Exp. Conn.
Table 23.
Device
Header
Expansion Connector
Device
I2C3 Address(7b)
0x50
0x48
Either U117 or
U109 will be
mounted on
board
0x20
0x21
NA
NA
SPRUI50 – February 2016
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