Some confusions regarding XK-1A board
Posted: Mon Aug 13, 2012 12:16 pm
Regarding XK-1A I have some queries as following below.
1) In XK-1A schematic no power on reset chip found. The chip reset pin RST_N is connected to JTAG –IN connector. That means the chip will be reset by XTAG-2.
My question:
After flashing binary when the board is powered on (stand alone) with out XTAG-2 then how power on reset is done properly?
2) In XK-1A board two x-links are used. Link-C connected with JTAG-IN terminal & Link-D is connected with JTAG-OUT terminal. That means when multiple boards are connected via x-link then slave board will be booted through x-link C as it is connected with JTAG-IN terminal.
My question:
As per documentation XMOS L1 chip can boot through x-link B not link C. Then how XK-1A boots over xlink. On another point MODE PIN 3&2 both are connected together and pulled UP. So the boot sequence can be set 0,0 & 1,1. Then in case of multiple board how slave boards boot sequence are set to boot over xlink.
regards
jags
1) In XK-1A schematic no power on reset chip found. The chip reset pin RST_N is connected to JTAG –IN connector. That means the chip will be reset by XTAG-2.
My question:
After flashing binary when the board is powered on (stand alone) with out XTAG-2 then how power on reset is done properly?
2) In XK-1A board two x-links are used. Link-C connected with JTAG-IN terminal & Link-D is connected with JTAG-OUT terminal. That means when multiple boards are connected via x-link then slave board will be booted through x-link C as it is connected with JTAG-IN terminal.
My question:
As per documentation XMOS L1 chip can boot through x-link B not link C. Then how XK-1A boots over xlink. On another point MODE PIN 3&2 both are connected together and pulled UP. So the boot sequence can be set 0,0 & 1,1. Then in case of multiple board how slave boards boot sequence are set to boot over xlink.
regards
jags