NB2DSK01 - NanoTalk Master-Slave Headers

To allow multiple NanoBoards to be connected in a daisy-chain configuration, two 10-pin headers are provided – designated HDR4 ('NANOTALK IN') and HDR5 ('NANOTALK OUT').

Figure 1. NanoTalk Master and Slave connectors, used for daisy-chaining NanoBoards.

To add an additional NanoBoard (e.g. an NB1 or an NB2DSK01) into the chain, simply connect a 10-way IDC ribbon cable from header HDR5 on the first board (labeled on the component side of the board as 'NANOTALK TO SLAVE'), to header HDR4 on the additional board (labeled on the component side of the board as 'NANOTALK FROM MASTER').

The presence of a NanoBoard is determined by the signal level on pin 10 of a header. If this is Low the NanoBoard Controller will route both the Hard and Soft JTAG chains via the header.

Location on Board

The two headers are located on the solder side of the board, at the top-left and top-right edges respectively.

Schematic Reference

The NanoTalk Master and Slave circuitry can be found on the following sheets of the motherboard schematics:

• Sheet 28 (JTAG_ALTIUM_NANOTALK.SchDoc, entitled NanoTalk JTAG Header)

• Sheet 29 (CON_NANOTALK_10WHDRRAMx2.SchDoc, entitled NanoTalk JTAG Headers).