MQ-1168 Evaluation Board Users Guide
MediaQ Incorporated
Board Revision 2
Revision A
4/18/02
Preliminary 6
Care must be taken when fabricating cables to ensure that pins do not short together as this could cause
damage to either the MQ1168 or the panel and even in some instances to both.
Touch Screen / MMC
The Evaluation board supports a touch screen controller connected to the SPI interface of the MQ-1168
controller. Connector J2 mates with the flat cable connected to the touch panel provided with the Sharp
HR TFT display (LQ039Q2DS54). To install the cable, pull out the sliding black portion of the socket,
insert the cable bare metal side up and then push the black portion back in locking the cable in place.
USB
Two USB connectors are provided on the Evaluation board. CN2 is a Type A USB connector and
provides the USB Host functionality of the MQ-1168. CN1 is a Type B connector and provides the USB
Device function. Since the MQ-1168 USB device is a high speed device, CN1 is configured as such.
Video
The board includes a Conexant Video Decoder (Bt835) which outputs VIP data compatible with the MQ-
1168. Both composite and S-Video input sources are supported on J1 and JS1 respectively. In addition,
J7 makes all the MQ-1168 video related signals available on a 30-pin standard 0.1” header. This can be
used to observe the signal activity with test equipment or to allow external VIP compliant digital video
data to be sent to the MQ-1168 instead of using the onboard decoder.
Secure Digital
The MQ-1168 Secure Digital interface is used to support either SD or MMC cards installed in the SD
socket (U3). Card detect and write protect functions are implemented.
Audio
The Evaluation board supports audio input and playback/output using either of the onboard audio
CODECs. Both a Philips I2S and Crystal AC97 audio CODEC are implemented on board. Stuffing
resistors are used to select between the two.
Audio input can come from any amplified or non-amplified audio source and uses the Phone Jack CN3.
Amplified audio output to headphones, amplified speakers or other destinations is available on the Phone
Jack CN5. A mono or stereo microphone can be connected to the Phone Jack CN4.
Power
Power is provided by the PCI interface or CPU adapter card when used. The 1.8V and 3.3V power
supplies required by the MQ-1168 are provided by regulators on the Evaluation board which are powered
off the PCI bus or adapter card. The rest of the board is powered directly by the PCI bus or adapter card.
