ADSP-21262 EZ-KIT Lite Evaluation System Manual
2-3
Using EZ-KIT Lite
To access the SRAM and Flash memories, set up a Parallel Port DMA. For
more information on how to connect the SRAM and Flash memories, see
“Parallel Port” on page 3-3
.
The SPI Flash memory connects to the DSP’s SPI port and uses
Flag0
as a
chip select. In order for
FLAG0
to behave as a chip select, clear the
PPFLG
bit in the
SYSCLT
register.
An example program is included in the EZ-KIT installation directory to
demonstrate how the parallel port and SPI port can be configured to
access the memories.
Using Analog Audio
The AD1835A is a high-performance, single-chip codec featuring four ste-
reo digital-to-analog converters (DAC) for audio output and one stereo
analog-to-digital converters (ADC) for audio input. The codec can input
and output data with a sample rate of up to 96 kHz on all channels. A
192 kHz sample rate can be used with the one of the DAC channels.
The DSP is interfaced with the AD1835A via the DAI port. The DAI
interface pins can be configured to transfer serial data from the AD1835A
codec in either time-division multiplexed (TDM) or I
2
S mode. For more
information on how the AD1835A connects to the DAI, see
“DAI Inter-
face” on page 3-4
.
Table 2-1. EZ-KIT Lite Evaluation Board External Memory
Start Address
End Address
Content
0x0100 0000
0x010F FFFF
Flash memory
0x0120 0000
0x012F FFFF
SRAM memory
0x0140 0000
0x0140 FFFF
LEDs (see
“LEDs and Push Buttons” on page 3-12
).
0x0160 0000
0x017F FFFF
Unused chip select 1
0x0180 0000
0x019F FFFF
Unused chip select 2
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