External Port; Sport0 - Audio Interface - Analog Devices ADSP-21160 EZ-KIT LITE Manual

The core frequency of the DSP is configured by multiplying the external oscillator
by 2x. If there is a ADSP-21160N DSP on the board, the external oscillator is 40
MHz. If there is a ADSP-21160N DSP on the board, the external oscillator is
47.5 MHz.
The EZ-KIT Lite board can be configured to boot in all of the possible
ADSP-21160 boot modes. The default boot mode is from external 8-bit flash.
For information about configuring the boot mode, see section 4.3.2.

4.2.1 External Port

The External Port (EP) is connected to 512 KB (64K x 32-bits x 2-chips) of
SBSRAM. This memory is connected to the ~MS1 memory select pin. This
provides a 64-bit wide memory interface.
The EP is also connected to 512KB (512K x 8-bits) of flash memory. This
memory is connected to both ~BMS and ~MS0 memory select pins. This allows
the DSP to boot from the flash using ~BMS and program the flash using ~MS0.
All of the address, data, and control signals are available externally via the
expansion connectors (P1, P2 and P3). The pinout of these connectors can be
found in APPENDIX B:
4.2.2 SPORT0 – Audio Interface
SPORT0 is connected to the AD1881A SoundMAX codec (U13). Two 3.5mm
stereo jacks (P9, P10) allow audio to be input and output. You can supply an
audio input to the codec microphone input channel (MIC1) or to the stereo
LINE_IN input channel. The jumper settings of JP1 determine the codec channel
driven by the input jack (P9). For information about configuring JP1, see section
4.3.1.
SPORT0 is also routed to an off-board connector (P11). When using the off-
board connector, the codec must be held in reset, so it does not drive any of the
SPORT0 signals. The codec can be held in reset by driving FLAG3 low (0). The
DSP must drive FLAG3 high (1) for the codec to function.
! NOTE: The TCLK0 and RCLK0 pins are shorted together using R19 and
R20.
ADSP-21160 EZ-KIT Lite Evaluation System Manual
SCHEMATIC.
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