Dpi Interface - Analog Devices Lite ADSP-21371 EZ-KIT System Manual

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DPI Interface

The digital peripheral interface (DPI) pins are connected to a second sig-
nal routing unit of the processor (
is a flexible routing system, providing a large system of signal flows within
the processor. In general, the
internal peripherals in various combinations.
The DPI pins are connected to the SPI flash memory, SPI of the
AD1835A codec, a UART, a 20-pin header, and five LEDs.
illustrates the EZ-KIT Lite's connections to the DPI interface.
ADSP-21371
DPI12 (UART CTS)
DPI11 (UART RTS)
DPI10 (UART RX)
DPI9 (UART TX)
DPI14 (LED5)
DPI13 (LED4)
DPI8 (LED3)
DPI7 (LED2)
DPI6 (LED1)
DPI5 (SPI_FLASHCS)
DPI4 (SPI_AD1835CS)
DPI3 (SPICLK)
DPI2 (MISO)
DPI1 (MOSI)
Figure 2-3. DPI Connections Block Diagram
To use the DPI for a different purpose, disable any signal driving a DPI
pin with a switch (see
DPI pin connected to a LED can be used without having to disconnect
the pin. You can, however, see the respective LED turn
the signal is used elsewhere on the board.
ADSP-21371 EZ-KIT Lite Evaluation System Manual
ADSP-21371 EZ-KIT Lite Hardware Reference
). The
SRU2
can route the DPI pins to different
SRU2
T2IN
R2OUT
ADM3202
R1OUT
T1IN
LED5
CS/
SPI
LED4
SCK
FLASH
LED3
SO
LED2
SI
LED1
CLATCH
CCLK
AD1835
COUT
CIN
"UART Enable Switch (SW5)" on page
unit, similar to the
SRU2
Figure 2-3
T2OUT
DB-9
R2IN
R1IN
Conn
T1OUT
2-11). Any
and when
ON OFF
,
SRU
2-5