Digilent 410-258P-KIT - Manual (Page 9)

Anvyl Reference Manual
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Audio data sampling at up to 24 bits and 96KHz is supported, and the audio in (record) and audio out
(playback) sampling rates can be set independently. The microphone jack is mono, and all other jacks
are stereo. The headphone jack is driven by the audio codec's internal amplifier. The datasheet for the
SSM2603CPZ audio codec is available from the Analog Devices website.
Touchscreen TFT Display
A 4.3” wide-format vivid color LED backlit LCD screen is used on the Anvyl. The screen has a
480×272 native resolution display with a color depth of 24 bits per pixel. A four-wire resistive
touchscreen with antiglare coating covers the entire active display area. The LCD screen and the
touchscreen can be used independently. Touch readings are noisier when the LCD is on, but you can
filter the noise and still obtain a fast sample rate. If you require maximum precision and sample rates,
you should turn the LCD off during touchscreen sampling.
To display an image, the LCD needs to be continuously driven with properly-timed data. This data
consists of the lines and blanking periods that form video frames. Each frame consists of 272 active
lines and several vertical blanking lines. Each line consists of 480 active pixel periods and several
horizontal blanking periods.
For additional information on using the TFT Display, refer to the Vmod-TFT reference manual. The
Anvyl and the Vmod-TFT use the same display hardware and require the same control signals.
Reference designs that use the Anvyl touchscreen TFT display can be found on the Anvyl product
page.
OLED
An Inteltronic/Wisechip UG-2832HSWEG04 OLED Display is used on the Anvyl. This provides a
128x32 pixel, passive-matrix, monochrome display. The display size is 30mm x 11.5mm x 1.45mm.
An SPI interface is used to configure the display, as well as to send the bitmap data to the device. The
Anvyl OLED displays the last image drawn on the screen until it is powered down or a new image is
drawn to the display. Refreshing and updating is handled internally.
The Anvyl contains the same OLED circuit as the PmodOLED, with the exception that CS# is pulled
low, enabling the display by default. For additional information on driving the Anvyl OLED, refer to the
PmodOLED reference manual. Reference designs that use the Anvyl OLED display can be found on
the Anvyl product page.
USB-UART Bridge (Serial Port)
The Anvyl includes an FTDI FT2232HQ USB-
UART bridge to allow PC applications to
communicate with the board using standard
Windows COM port commands. Free USB-
COM port drivers, available from
www.ftdichip.com under the "Virtual Com
Port" or VCP heading, convert USB packets to UART/serial port data. Serial port data is exchanged
with the FPGA using a two-wire serial port (TXD/RXD) and software flow control (XON/XOFF). After
the drivers are installed, I/O commands from the PC directed to the COM port will produce serial data
traffic on the T19 and T20 FPGA pins.