Uart Interface - Analog Devices ADSP-21479 EZ-Board Manual

UART Interface

the analog audio interface. Switch
phones. A volume control potentiometer (
decrease the headphone's volume.
Enable Switch (SW23)" on page 2-18.
Example programs are included in the EZ-Board installation directory to
demonstrate how to configure and use the board's analog audio interface.
The DAI and DPI pins going to the AD1939 device can be disabled, then
used again on the expansion II interface. Refer to
page 2-3 and "DPI Interface" on page 2-4
DAI and DPI switches.
UART Interface
The ADSP-21479 processor features a built-in universal asynchronous
receiver and transmitter (UART). The UART interface supports full
RS-232 functionality via the Analog Devices 3.3V ADM3202 line driver
and receiver (
U8
DIP switch (
SW14
be disconnected from the respective DPI interface and used on the expan-
sion II interface. The following DPI pins are used for the RS-232
interface.
• DPI pin 9 (
• DPI pin 10 (
• DPI pin 11 (
• DPI pin 12 (
1-22
). The UART signals are available on the EZ-Board via a
). The UART signals routed through the DIP switch can
) as
DPI_P9 UART_TX
) as
DPI_P10 UART_RX
) as
DPI_P11 UART_RTS
) as
DPI_P12 UART_CTS
ADSP-21479 EZ-Board Evaluation System Manual
must be enabled for the head-
SW23
) is used to increase or
R493
For more information, see "Headphone
"DAI Interface" on
for more information about the