JTAG Pinouts

http://www.jtagtest.com/pinouts/

Pinouts

ARM-20 (used with almost all ARM-based microcontrollers)ARM-14 (used as a lower pin-count version of ARM-20)MIPS EJTAG used with all MIPS microcontrollers (mostly embedded devices, can be found on many WiFi devices)Toshiba MIPSPhilips MIPSAVR JTAG Compatible with AVR, Altera JTAG, ... (widely used)Altera ByteBlaster Compatible with AVR, Altera JTAG, ... (widely used)Maxim MAXQ JTAG Partially compatible with AVR JTAGActel FlashPro3 JTAGPLD-JTAGCypress Ultra-isrLattice JTAG ispDOWNLOAD 2x5pinLattice JTAG ispDOWNLOAD 9pinTI MSP430Xilinx JTAGXilinx JTAG 9pin

Non-standard manufacturer-specific pinouts

Linksys WRT54G(S) - used as EJTAGBosch EDC16/MED9 car ECUMotorola PowerPC BDM port

Which JTAG pinout should I choose?

If you are designing with ARM or MIPS microprocessor, we recommend using appropriate JTAG connector (EJTAG or ARM JTAG) to maintain compatibility with development tools. In other cases we recommend you using JTAG connector for manufacturer of your part or AVR/Byteblaster JTAG (which is compatible with many other products) or standard 8pin "PLD" JTAG connector.

Daisy chaining multiple devices

If your design uses multiple devices with JTAG TAP, you must either use separate connector for each device or chain devices. Generally, JTAG supports many devices in single JTAG chain, but many tools are not compatible with this feature. Check tool's documentation before you put devices into chain.

转载于:https://www.cnblogs.com/shangdawei/p/3186165.html

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