External Bus Interface Unit; Sport Audio Interface; Spi Interface - Analog Devices ADSP-BF561 EZ-KIT Lite Manual

External Bus Interface Unit

The external bus interface unit (EBIU) connects external memory to the
ADSP-BF561 processor. It includes a 32-bit wide data bus, an address bus
( ), and a control bus. All of the 8-bit, 16-bit, and 32-bit accesses are
A25–2
supported. On the EZ-KIT Lite board, the EBI unit connects to SDRAM
and flash memory. For more information on using the external memory
see "Memory Map" on page
All of the address, data, and control signals are available externally via the
expansion interface connectors (
be found in "ADSP-BF561 EZ-KIT Lite Schematic" on page

SPORT Audio Interface

The interface connects to the AD1836A audio codec and the
SPORT0
expansion interface. The AD1836A codec uses both the primary and sec-
ondary data transmit and receive pins to input and output data from the
audio input and outputs.
The interface connects to the
SPORT1
The pinout of the
in "ADSP-BF561 EZ-KIT Lite Schematic" on page

SPI Interface

The processor's serial peripheral interface (SPI) connects to the AD1836A
audio codec and the expansion interface. The SPI connection to the
AD1836A codec is used to access the control registers of the device. The
flag of the processor acts as the device select for the SPI port.
PF4
The SPI signals are available on the expansion interface and on the SPI
connector ( ). The pinout for the interface can be found in
P5
"ADSP-BF561 EZ-KIT Lite Schematic" on page
ADSP-BF561 EZ-KIT Lite Evaluation System Manual
www.BDTIC.com/ADI
ADSP-BF561 EZ-KIT Lite Hardware Reference
1-7.
). The pinout of these connectors can
J1 3
–
and expansion interface connectors can be found
SPORT
connector (
SPORT P3
B-1.
B-1.
B-1.
).
2-3