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Messages - dts

1
Web platform / Web Platform Schematics, SPI in particular
Hi people!
I am new in this forum, so please excuse me my ignorance.
I was looking for some prototype for Ethernet connectivity and came across Web Platform, it has all my favorite chips! So i started to look into details.
Is there a particular reason why 3 SPI devices SD_card, 25LC1024 eeprom and ENC28J60 connected to different PIC pins? 33FJ128GP204 has only 2 SPI modules, so at least one of them must be switched between peripherals all the time. Can somebody explain why?
In my experience a lot of SPI devices could be all connected to one SPI bus. Just each device needs separate select line. Much easier to handle.
I also noticed somebody suggesting connection on FT232RL DSR(?) pin to PIC MCLR. Microchip excellent bootloader for PIC18 based on AN1310 has RTS pin connected to PIC MCLR through diode and 470 ohm resistor. Very convenient.
And if there is not enough of PIC pins, MCP23S17 is a good extension device.
dts

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