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5.2.1 Additional Setup when DSP Processes Video Only
In this configuration, digital video goes to the DaVinci HD EVM. Digital I2S audio goes to the
TLV320DAC32 Audio DAC on the TVP5158EVM. Stereo audio output can then be taken from the
TVP5158EVM headphone jack. Make the following additional connections:
1. Samtec HQCD ribbon cable from TVP5158EVM DaVinci Video connector to the DaVinci HD EVM
DC_P2 Video Expansion connector.
2. TVP5158EVM headphone jack to audio amplifier/speakers or headphones
5.2.2 Additional Setup When DSP Processes Video and Audio
CAUTION
A modification to both the TVP5158EVM and the DaVinci HD EVM must be
made if I2S digital audio is to be processed by the DM6467 DSP (see
Section 5.2.2.1).
In this configuration, digital video and digital audio go to the DaVinci HD EVM. For the digital audio
connection, a hardware modification is required as described in Section 5.2.2.1. The stereo audio is then
output from the DaVinci HD EVM headphone jack. After making the hardware modification, make the
following additional connections:
1. Samtec HQCD ribbon cable from TVP5158EVM DaVinci Video connector to the DaVinci HD EVM
DC_P2 Video Expansion connector
2. Samtec HQCD ribbon cable from TVP5158EVM DaVinci Audio connector to DaVinci HD EVM DC_P3
I/O Expansion connector
3. DaVinci HD EVM headphone jack to audio amplifier/speakers or headphones
5.2.2.1 Hardware Modification for I2S Audio to DM6467 DSP
Three 0-Ω resistors must be removed from the TVP5158EVM and three 0-Ω resistors must be removed
from the DaVinci HD EVM according to Table 3.
Table 3. Hardware Modifcation for I2S Audio to DM6467
Remove From TVP5158EVM Remove From DaVinci HD EVM
R42 SD_M R13 MCASP0_ACLKR
R98 MCASP0_EN R17 MCASP0_AFSR
R99 AUDIO_CLK_EN R31 MCASP0_AXR1
NOTE: After this modification has been made, the SD_M I2S digital audio output from TVP5158 will
no longer be available. The SD_R output must be used and W9 must be jumpered 2-3. If
headphone output from the TVP5158EVM is to be tested using the audio mixer (SD_M I2S
output), 0-ohm resistor R42 must be reinstalled and W9 must be jumpered 1-2.
5.2.3 Jumper Settings with DaVinci HD EVM
When the DaVinci HD EVM is used, the video and/or audio driver software can be set to control the entire
system, or can be set to skip I2C programming of the TVP5158. In the latter case, the PC USB interface
and the Video Control Center application software are used to initialize and experiment with TVP5158
register settings through a graphical user interface.
12
TVP5158 Evaluation Module SLEU108–November 2009
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