Datasheet

Analog Audio Interface
1-8 ADSP-21262 EZ-KIT Lite Evaluation System Manual
The parallel flash memory and the SRAM connect to the parallel port of
the processor. The parallel port is a multiplexed address and data port.
The port can connect to 8-bit and 16-bit memory devices. When config-
uring the parallel port, keep in mind that the memory devices on the
board are 8 bits wide.
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 2-3.
The SPI flash memory connects to the processor’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 SYSCTL 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.
Analog Audio Interface
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.
0x0140 0000 0x0140 FFFF LEDs; see “LEDs and Push Buttons” on page 1-11.
0x0160 0000 0x017F FFFF Unused chip select 1
0x0180 0000 0x019F FFFF Unused chip select 2
Table 1-1. EZ-KIT Lite Evaluation Board External Memory (Cont’d)
Start Address End Address Content