JTAG Multiplexer features secondary port autodetection.

Press Release Summary:



Providing transparent communication between arbitrated master and selected secondary port, Model DS26900 JTAG signal multiplexer provides 3 arbitrated master ports and 18 independent secondary ports, which can be cascaded for up to 36 secondary ports. MicroTCA(TM)-compliant unit features two 32-bit scratchpad registers, internal pullup/pulldown resistors, and operation up to 50 MHz. Specified over -40 to +85°C extended temperature range, it comes in 20 x 20 mm, lead-free LQFP package.




Original Press Release:



Industry's First, MicroTCA-Compliant JTAG Multiplexer to Provide 18 Secondary and 3 Master Ports in a Single Chip



The DS26900 is a JTAG signal multiplexer with secondary port autodetection.

The DS26900 provides transparent communication between an arbitrated master and a selected secondary port, for up to 18 secondary ports.

To achieve this functionality, this device provides port autodetection that enables the master port to detect the presence of JTAG-provisioned devices, boards, or modules on any secondary port.

The DS26900 is ideal for MicroTCA applications, AdvancedMC carrier blades, system-level diagnostics, test equipment, JTAG applications, and board-level JTAG applications.

SUNNYVALE, CA-October 17, 2007-Maxim Integrated Products (Pink Sheets: MXIM) introduces the DS26900 JTAG signal multiplexer with secondary port autodetection. As the industry's first MicroTCA(TM)-compliant single-chip solution, the DS26900 provides 3 arbitrated master ports and 18 independent secondary ports, which can be cascaded for up to 36 secondary ports. For simplified design and ease of use, this device provides port autodetection that allows the master to detect device presence on secondary ports, as well as transparent communication between an arbitrated master and a selected secondary port. The DS26900 is ideal for MicroTCA applications, AdvancedMC(TM) carrier blades, system-level diagnostics, test equipment, board-level JTAG applications, and ATCA® applications.

An efficient solution for star architecture JTAG, the DS26900 also features two 32-bit scratchpad registers, internal pullup/pulldown resistors, and operation up to 50MHz. This device is available in a leaded or lead-free, tiny, 20mm x 20mm, 144-pin LQFP package. It is fully specified over the -40°C to +85°C extended temperature range. Pricing starts at $6.50 (10,000-up, FOB USA).

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