Hello,
i have a few questions about SPI slave (at the moment only general
questions):
1) I have a SPI master which uses a SPI clk of 20 MHz or even 25 MHz. Is
there any possibility to use a LPC2106 to receive bytes, because (as i
think) speed is limited to 60 MHz / 8 = 7,5 MHz ?
2) Any trick to handle this above speeds ? Even with additional hardware or
other CPU ?
3) Even when using 7,5 MHz, is the LPC2106 fast enough to receive and handle
the received bytes ? In a previous project (simple logic analyzer) i simply
moved bytes from port to memory and achieved around 6 MBytes/s (best case,
with unrolled loops...). So when clock is 7,5 MHz, data is coming with
around 1 MByte/s and you must handle a few things like determining if byte
was received, perhaps interrupt handling (or without interrupt)... So is it
realistic to handle this or must clock be reduced some factors.
Regards,
MartinMessage
SPI slave - speed... too fast ?
2004-03-02 by capiman@t-online.de
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