Danville Signal Processing dspstak 21262sx User Manual
                                   | |
Contents
| 
JTAG Emulation PortThe dspstak 21262sx has a right angle JTAG connector (JH3) mounted on the lower edge of the pcbassembly. This connector is assessable even when a dspstak I/O Module is positioned above thedspstak 21262sx.Danville JTAG connectors are smaller than the standard ADI recommended JTAG header.The Danville JTAG connector is a male 16 pin, 2mm dual row header. Each pin directlycorresponds to the same pins on the Analog Devices header. The remaining pins (15&16) areassigned to Vd+3.3. The extra power supply pins allow you to power a buffer in a system that hasmany JTAG devices. A JTAG adapter kit is available from Danville to convert the 2mm header to the0.100 header used by the Analog Devices and BeastRider emulators.It is our experience that the ADSP-21262 JTAG port is sensitive to noise. You should place 2mmjumpers across pins 5&6 (TMS), 7&8 (TCK) and 9&10 (TRST) when you are not using the port.dspstak™ 21262sx ArchitectureHardware – ADSP-21262 CoreThe heart of the dspstak 21262sx is an Analog Devices ADSP-21262 DSP. This manual does notdiscuss the internal workings of this DSP, the assembly language and other details specific to thisDSP. You should refer to the fore mentioned ADI documents for this information. The ADSP-21262has several important peripherals that we will expand on as they relate to the dspstak 21262sx.They are as follows:• Digital Audio Interface (DAI)• Parallel Port• SPI InterfaceDAIThe DAI is comprised of a group of peripherals including the SPORTs and a signal routing unit.There are 20 pins on the DSP that connect the DAI to the outside world. All 20 DAI pins areavailable on the Interconnect Port. Sixteen of these pins are connected to lines that are defined asSPORT pins on the Interconnect Port. One pin is assigned as the IRQ input and the remaining threepins are shared with the auxiliary I/O and SPI Slave Select lines. If you are mapping the DAI to usestandard dspstak I/O Modules, the definitions are restrictive to allow dspstak DSP Engines with lesssophisticated I/O to work with these I/O Modules as well. If you are designing your own dspstak I/Odspstak™ 21262sx User Manual Page 10 |
This manual is suitable for:
manualsdatabase
Your AI-powered manual search engine