Hardware Description
7
SLLU225A – August 2015 – Revised March 2018
Copyright © 2015–2018, Texas Instruments Incorporated
DP159RGZ Evaluation Module
2.6
Local I
2
C Access Through J5
Access to DP159’s local I
2
C signals is provided via the J5 input connector. Note that I
2
C signal levels
should be at 3.3 V when I
2
C interface is accessed through the connector.
A standalone external I
2
C host can be connected via J5 for debug and control purposes. An example of an
external I
2
C Host controller is the Total Phase Aardvark I
2
C/SPI Host Adapter (Total Phase Part#:
). Sample scripts for this I
2
C Host controller are provided by request.
Table 2. Aardvark I
2
C (J5) Pin-Out
J5 pin #
Description
J5 pin
#
Description
1
SCL_CTL
2
GND
3
SDA_CTL
4
NC
5
NC
6
NC
7
NC
8
NC
9
NC
10
GND
(1)
The target I
2
C address for DP159 can be modified by the EVM jumper settings.
Table 3. DP159 Target I
2
C Address
(1)
DP159 I
2
C Target Address
Bit 7 (MSB)
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0 (W/R)
A6
A5
A4
A3
A2
A1
A0
1
0
1
1
1
1
0
0/1
2.7
Local I
2
C Access Through USB Interface via TUSB3410
Access to DP159’s local I
2
C signals is also provided through the TUSB3410 on the DP159RGZEVM using
a USB TI Utility called Eye Scan. To use the utility:
•
Install the Eye Scan software from Texas Instruments
•
J6 must be set to SDA – SDA_USB
•
J4 must be set to SCL – SCL_USB
•
Attach USB micro cable to J13 and to the host computer
NOTE:
The USB connection should be made prior to installing any DP or HDMI cables.
•
Start the Eye Scan software
