Introduction of MW-21489EVB Development Board
This DSP development board (model MW-21489EVB) is specially designed for ADI SHARC DSP ADSP-2148X. It provides audio input and output, power input, JTAG and USBi debugging ports, serial ports and other modules through the combination of the core board of DSP (model MW-21489-CORE) and audio expansion board (model MW-AUDIO-EXT). The hardware design is fully compatible with the original 2148X development board of ADI. The audio CODEC adopts ADI AD1938, supports 4 in and 8 out, supports coaxial SPDIF input and output, etc. The audio expansion board is connected to the core board through two 2*20 slots.
Can be directly based on VDSP or CCES or SS4SH own routines for experiments, learning, transplantation, etc. In addition to VDSP or CCES (21489 BSP must be installed) with its own routines. We will also provide a basic Chinese usage document and SS4SH usage routine document.
1. Development Board Top View (Figure 1)
The main components of the core board include ADI company SHARC DSP ADSP-21489, (/SDRAM), SPI/NOR FLASH (NOR FLASH is the optional module), crystal oscillator circuit, LDO/DC-DC power supply module, 14 PIN JTAG debugging interface (2*7, 2.54 mm spacing), 10 PIN USBi debugging interface (2*5, 2.54 mm spacing), start-up mode setting, reset circuit, GPIO press. Key input and LED light display, etc.
The main components of the audio expansion board include ADI audio codec AD1938, LDO power supply module, RCA audio input socket 2 pairs, RCA audio output socket 4 pairs, a sound output interface (4L/4R with output), coaxial SPDIF input/output port, reset circuit, RS-232 serial communication interface, DC power input and switch, etc.
The LDO power module of the audio expansion board provides voltage conversion and voltage stabilization of DC 5V_3.3V. The 3.3V power supply supplies power to the core board through a slot (at this time, there is no need to supply power to the core board alone). The DC-DC voltage module of the core board will provide the core voltage from 3.3V to 1.1V to the DSP.
Back view of core board (Figure 2)
The main components of the backplane of the DSP core board include: active crystal oscillator (including 24.576MHz and 25MHz), SPI FLASH (ST M25P16, standard accessories), NOR FLASH (ST M29W320EB optional).
Simulated RCA Input and Output Diagram (Figure 3)
With the plate standard:
21489 core board 1pcs
Audio Extension Board 1pcs
5V DC power adapter 1 pcs
Double RCA to 3.5mm base transfer joint 1pcs
3.5mm Dual RCA Transfer Joint 1pcs
Application routines and use documents (pdf electronic files) 1pcs (transmitted through QQ files)